有没有一种简单的方法来检查 .NET Framework 版本？
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【中文标题】有没有一种简单的方法来检查 .NET Framework 版本？【英文标题】：Is there an easy way to check the .NET Framework version? 【发布时间】：2009-06-04 17:06:24 【问题描述】：问题是我需要知道它是否是版本 3.5 SP 1。Environment.Version() 只返回 2.0.50727.3053。
我找到了this solution，但我认为这将花费更多的时间而不是它的价值，所以我正在寻找一个更简单的。有可能吗？
【问题讨论】：
没有进一步调查，Environment.Version() 可能只是返回CLR的版本。
Environment.Version() 提供2.0，即使它与3.5 一起运行
我使用了***.com/questions/15128426/…中提到的方法
How to: Determine Which .NET Framework Versions Are Installed（也包括程序化解决方案）
@Lijo，对于 .NET 3.5，CLR 版本 实际上是 2.0。
【参考方案1】：
应该这样做。只需从注册表中获取值
对于 .NET 1-4：
Framework 是最高安装版本，SP 是该版本的服务包。
RegistryKey installed_versions = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP");
string[] version_names = installed_versions.GetSubKeyNames();
//version names start with 'v', eg, 'v3.5' which needs to be trimmed off before conversion
double Framework = Convert.ToDouble(version_names[version_names.Length - 1].Remove(0, 1), CultureInfo.InvariantCulture);
int SP = Convert.ToInt32(installed_versions.OpenSubKey(version_names[version_names.Length - 1]).GetValue("SP", 0));
对于 .NET 4.5+（来自 official documentation）：
using System;
using Microsoft.Win32;
...
private static void Get45or451FromRegistry()
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
int releaseKey = Convert.ToInt32(ndpKey.GetValue("Release"));
if (true)
Console.WriteLine("Version: " + CheckFor45DotVersion(releaseKey));
...
// Checking the version using >= will enable forward compatibility,
// however you should always compile your code on newer versions of
// the framework to ensure your app works the same.
private static string CheckFor45DotVersion(int releaseKey)
if (releaseKey >= 528040)
return "4.8 or later";
if (releaseKey >= 461808)
return "4.7.2 or later";
if (releaseKey >= 461308)
return "4.7.1 or later";
if (releaseKey >= 460798)
return "4.7 or later";
if (releaseKey >= 394802)
return "4.6.2 or later";
if (releaseKey >= 394254)
return "4.6.1 or later";
if (releaseKey >= 393295)
return "4.6 or later";
if (releaseKey >= 393273)
return "4.6 RC or later";
if ((releaseKey >= 379893))
return "4.5.2 or later";
if ((releaseKey >= 378675))
return "4.5.1 or later";
if ((releaseKey >= 378389))
return "4.5 or later";
// This line should never execute. A non-null release key should mean
// that 4.5 or later is installed.
return "No 4.5 or later version detected";
【讨论】：
每个 SOFTWARE\Microsoft\NET Framework Setup\NDP\<.net version> 的长版本字符串和 SP 子项应该提供这个，您可以使用 GetValue 方法获取。 这不是在机器上获得最高 INSTALLED 版本的 .NET - 而不是运行应用程序的版本吗？ @FactorMystic ：您好，我已经使用您的代码检查了最新版本，但即使它安装在我的 PC 中，它也没有列出 4.5 版本。请指导我 @FactorMystic 这可以在非管理员 PC 帐户上完成吗？我可以访问注册表值吗？ @FactorMysticif (true) 检查的意义何在？为什么不直接打电话给Console.WriteLine()？【参考方案2】：
不知道为什么没有人建议遵循 Microsoft 的官方建议 对 here。
这是他们推荐的代码。当然它很丑，但它有效。
对于 .NET 1-4
private static void GetVersionFromRegistry()
// Opens the registry key for the .NET Framework entry.
using (RegistryKey ndpKey =
RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "").
OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
// As an alternative, if you know the computers you will query are running .NET Framework 4.5
// or later, you can use:
// using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine,
// RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
foreach (string versionKeyName in ndpKey.GetSubKeyNames())
if (versionKeyName.StartsWith("v"))
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
string name = (string)versionKey.GetValue("Version", "");
string sp = versionKey.GetValue("SP", "").ToString();
string install = versionKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
Console.WriteLine(versionKeyName + " " + name);
else
if (sp != "" && install == "1")
Console.WriteLine(versionKeyName + " " + name + " SP" + sp);
if (name != "")
continue;
foreach (string subKeyName in versionKey.GetSubKeyNames())
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name = (string)subKey.GetValue("Version", "");
if (name != "")
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
Console.WriteLine(versionKeyName + " " + name);
else
if (sp != "" && install == "1")
Console.WriteLine(" " + subKeyName + " " + name + " SP" + sp);
else if (install == "1")
Console.WriteLine(" " + subKeyName + " " + name);
适用于 .NET 4.5 及更高版本
// Checking the version using >= will enable forward compatibility,
// however you should always compile your code on newer versions of
// the framework to ensure your app works the same.
private static string CheckFor45DotVersion(int releaseKey)
if (releaseKey >= 393295)
return "4.6 or later";
if ((releaseKey >= 379893))
return "4.5.2 or later";
if ((releaseKey >= 378675))
return "4.5.1 or later";
if ((releaseKey >= 378389))
return "4.5 or later";
// This line should never execute. A non-null release key should mean
// that 4.5 or later is installed.
return "No 4.5 or later version detected";
private static void Get45or451FromRegistry()
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
if (ndpKey != null && ndpKey.GetValue("Release") != null)
Console.WriteLine("Version: " + CheckFor45DotVersion((int) ndpKey.GetValue("Release")));
else
Console.WriteLine("Version 4.5 or later is not detected.");
【讨论】：
.NET 1-4 的方法有一个错误：它不会打印到 3.0 的原始版本（没有 SP） 和updates 用于 NET Framework 4.7 和 NET Framework 4.7.1 ?不是 4.7 或更高版本。是的 4.7 或 4.7.1。
@Kiquenet 是否对提供的代码不起作用？
所以要检查 .NET 框架版本，我必须编写代码才能查看它是什么版本？【参考方案3】：
不需要访问注册表的另一种方法是检查特定框架更新中引入的类是否存在。
private static bool Is46Installed()
// API changes in 4.6: https://github.com/Microsoft/dotnet/blob/master/releases/net46/dotnet46-api-changes.md
return Type.GetType("System.AppContext, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089", false) != null;
private static bool Is461Installed()
// API changes in 4.6.1: https://github.com/Microsoft/dotnet/blob/master/releases/net461/dotnet461-api-changes.md
return Type.GetType("System.Data.SqlClient.SqlColumnEncryptionCngProvider, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089", false) != null;
private static bool Is462Installed()
// API changes in 4.6.2: https://github.com/Microsoft/dotnet/blob/master/releases/net462/dotnet462-api-changes.md
return Type.GetType("System.Security.Cryptography.AesCng, System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089", false) != null;
private static bool Is47Installed()
// API changes in 4.7: https://github.com/Microsoft/dotnet/blob/master/releases/net47/dotnet47-api-changes.md
return Type.GetType("System.Web.Caching.CacheInsertOptions, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", false) != null;
【讨论】：
4.5 的任何参考？ 我喜欢这个主意 和 4.7.1、4.7.2 和 4.8 ? 对我们这些有权限问题的人非常有用【参考方案4】：Environment.Version() 给出了不同问题的正确答案。相同版本的 CLR 用于 .NET 2.0、3 和 3.5。我想您可以查看 GAC 以获取在每个后续版本中添加的库。
【讨论】：
Environment.Version() 给出2.0，即使它与3.5 一起运行
Environment.Version() 为您提供 CLR 的名称。 3.5 不是 CLR 的新版本。它是 2.0 加上一些额外的库，市场驱动的 1.5 增量。
答案具有误导性。 CLR 2.0 用于 .NET 2.0、3.0 和 3.5。 CLR 已随版本 4 更改。CLR 4.0 用于 .NET 4.0。【参考方案5】：
过去很容易，但微软决定做出重大改变：在 4.5 版之前，每个版本的 .NET 都驻留在C:\Windows\Microsoft.NET\Framework 下的自己的目录中（子目录v1.0.3705, v1.1.4322, v2.0.50727, v3.0, v3.5 和@ 987654328@)。
自 4.5 版以来，这已更改：每个 .NET 版本（即 4.5.x、4.6.x、4.7.x、4.8.x、...）都安装在相同的子目录 v4.0.30319 - 因此您无法再通过查看 Microsoft.NET\Framework 来检查已安装的 .NET 版本。
为了检查 .NET 版本，Microsoft 已根据要检查的 .NET 版本提供了two different sample scripts，但我不喜欢为此使用两个不同的 C# 脚本。
所以我尝试将它们合二为一，这是我创建的脚本 GetDotNetVersion.cs（并针对 4.7.1 框架进行了更新）：
using System;
using Microsoft.Win32;
public class GetDotNetVersion
public static void Main(string[] args)
Console.WriteLine((args != null && args.Length > 0)
? "Command line arguments: " + string.Join(",", args)
: "");
string maxDotNetVersion = GetVersionFromRegistry();
if (String.Compare(maxDotNetVersion, "4.5") >= 0)
string v45Plus = GetDotNetVersion.Get45PlusFromRegistry();
if (v45Plus != "") maxDotNetVersion = v45Plus;
Console.WriteLine("*** Maximum .NET version number found is: " + maxDotNetVersion + "***");
private static string Get45PlusFromRegistry()
String dotNetVersion = "";
const string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\";
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(subkey))
if (ndpKey != null && ndpKey.GetValue("Release") != null)
dotNetVersion = CheckFor45PlusVersion((int)ndpKey.GetValue("Release"));
Console.WriteLine(".NET Framework Version: " + dotNetVersion);
else
Console.WriteLine(".NET Framework Version 4.5 or later is not detected.");
return dotNetVersion;
// Checking the version using >= will enable forward compatibility.
private static string CheckFor45PlusVersion(int releaseKey)
if (releaseKey >= 528040) return "4.8 or later";
if (releaseKey >= 461808) return "4.7.2";
if (releaseKey >= 461308) return "4.7.1";
if (releaseKey >= 460798) return "4.7";
if (releaseKey >= 394802) return "4.6.2";
if (releaseKey >= 394254) return "4.6.1";
if (releaseKey >= 393295) return "4.6";
if ((releaseKey >= 379893)) return "4.5.2";
if ((releaseKey >= 378675)) return "4.5.1";
if ((releaseKey >= 378389)) return "4.5";
// This code should never execute. A non-null release key should mean
// that 4.5 or later is installed.
return "No 4.5 or later version detected";
private static string GetVersionFromRegistry()
String maxDotNetVersion = "";
// Opens the registry key for the .NET Framework entry.
using (RegistryKey ndpKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "")
.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
// As an alternative, if you know the computers you will query are running .NET Framework 4.5
// or later, you can use:
// using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine,
// RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
foreach (string versionKeyName in ndpKey.GetSubKeyNames())
if (versionKeyName.StartsWith("v"))
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
string name = (string)versionKey.GetValue("Version", "");
string sp = versionKey.GetValue("SP", "").ToString();
string install = versionKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
Console.WriteLine(versionKeyName + " " + name);
if (String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
else
if (sp != "" && install == "1")
Console.WriteLine(versionKeyName + " " + name + " SP" + sp);
if (String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
if (name != "")
continue;
foreach (string subKeyName in versionKey.GetSubKeyNames())
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name = (string)subKey.GetValue("Version", "");
if (name != "")
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if (install == "")
//no install info, must be later.
Console.WriteLine(versionKeyName + " " + name);
if (String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
else
if (sp != "" && install == "1")
Console.WriteLine(" " + subKeyName + " " + name + " SP" + sp);
if (String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
else if (install == "1")
Console.WriteLine(" " + subKeyName + " " + name);
if (String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
// if
// if
// for
// if
// foreach
// using
return maxDotNetVersion;
// class
在我的机器上输出：
v2.0.50727 2.0.50727.4927 SP2 v3.0 3.0.30729.4926 SP2 v3.5 3.5.30729.4926 SP1 v4 客户端 4.7.03056 完整版 4.7.03056 v4.0 客户端 4.0.0.0 .NET Framework 版本：4.7.2 或更高版本 **** 找到的最大 .NET 版本号为：4.7.2 或更高版本 ****
随着时间的推移，唯一需要维护的是构建号，一旦大于 4.7.1 的 .NET 版本出现 - 这可以通过修改函数 CheckFor45PlusVersion 轻松完成，您需要知道发布密钥对于新版本，您可以添加它。例如：
if (releaseKey >= 461308) return "4.7.1 or later";
此发布密钥仍然是最新的，并且适用于 Windows 10 的 Fall Creators 更新。如果您仍在运行其他（较旧）Windows 版本，则根据 还有另一个>this 来自 Microsoft 的文档：
.NET Framework 4.7.1 安装在所有其他 Windows 操作系统版本 461310
所以，如果你也需要，你必须添加
if (releaseKey >= 461310) return "4.7.1 or later";
到函数CheckFor45PlusVersion的顶部。
同样，它适用于较新的版本。例如，我最近添加了 4.8 的检查。您通常可以找到这些内部版本号 at Microsoft.
注意：你不需要安装 Visual Studio，甚至不需要 PowerShell - 你可以使用 csc.exe 编译和运行上面的脚本，我已经描述了 @987654324 @
更新：问题是关于 .NET Framework，为了完整起见，我想提一下如何查询 .NET Core 的版本 - 与上面相比，这很容易：打开命令外壳并输入：
dotnet --info输入
它还会列出 .NET Core 版本号、Windows 版本以及每个相关运行时 DLL 的版本。 示例输出：
.NET Core SDK（反映任何 global.json）： 版本：2.1.300 提交：adab45bf0c 运行时环境： 操作系统名称：Windows 操作系统版本：10.0.15063 操作系统平台：Windows RID：win10-x64 基本路径：C:\Program Files\dotnet\sdk\2.1.300主机（用于支持）： 版本：2.1.0 提交：caa7b7e2ba .NET Core SDK 已安装： 1.1.9 [C:\Program Files\dotnet\sdk] 2.1.102 [C:\Program Files\dotnet\sdk] ... 2.1.300 [C:\Program Files\dotnet\sdk] .NET Core 运行时已安装： Microsoft.AspNetCore.All 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] ... Microsoft.NETCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] 要安装其他 .NET Core 运行时或 SDK： https://aka.ms/dotnet-download
注意
如果您只需要版本号而不需要所有其他信息，则可以使用 dotnet --version。
在64位Windows PC上，可以x86版本并排与x64一起安装strong> .NET Core 版本。如果是这种情况，您将只能获得环境变量 PATH 中最先出现的版本。 如果您需要保持最新并想了解每个版本，这一点尤其重要。要查询这两个版本，请使用：
C:\Program Files\dotnet\dotnet.exe --version 3.0.100-preview6-012264C:\Program Files (x86)\dotnet\dotnet.exe --version 3.0.100-preview6-012264
在上面的示例中，两者是相同的，但如果您忘记更新这两个实例，您可能会得到不同的结果！注意Program Files是64bit版本，Program Files (x86)是32bit版本。
更新：如果您更喜欢将内部版本号保留在列表中而不是级联的 if 语句中（如 Microsoft 建议的那样），那么您可以将此代码用于 CheckFor45PlusVersion：
private static string CheckFor45PlusVersion(int releaseKey)
var release = new SortedDictionary<int, string>()
378389, "4.5" ,
378675, "4.5.1" , 379893, "4.5.2" ,
393295, "4.6" ,
394254, "4.6.1" , 394802, "4.6.2" ,
460798, "4.7" ,
461308, "4.7.1" , 461808, "4.7.2" ,
528040, "4.8 or later"
;
int result = -1;
foreach(var k in release)
if (k.Key <= releaseKey) result = k.Key; else break;
;
return (result > 0) ? release[result] : "No 4.5 or later version detected";
【讨论】：
【参考方案6】：我的 .NET 4.0 类库可能会从 .NET 4.0 或更高版本的程序集调用。
只有从 4.5+ 程序集执行时，特定的方法调用才会起作用。
为了决定是否应该调用该方法，我需要确定当前执行的框架版本，这是一个很好的解决方案
var frameworkName = new System.Runtime.Versioning.FrameworkName(
AppDomain.CurrentDomain.SetupInformation.TargetFrameworkName
);
if (frameworkName.Version >= new Version(4, 5))
// run code
更新
这适用于 4.0 程序集
var featureEnabled = GetCurrentFrameworkName().Version >= new Version(4, 5);
public static FrameworkName GetCurrentFrameworkName()
// AppDomain.CurrentDomain.SetupInformation.TargetFrameworkName
// is missing prior to .NET 4.5
var targetFrameworkName = (string)AppDomain
.CurrentDomain
.SetupInformation
.GetType()
.GetProperty("TargetFrameworkName")?
.GetValue(AppDomain.CurrentDomain.SetupInformation, null) ?? ".NETFramework,Version=v4.0.0";
return new FrameworkName(targetFrameworkName);
【讨论】：
在浏览了所有这些使用注册表的答案之后，我认为这应该根据原始请求标记为正确答案。他想知道当前正在执行的程序集的 CLR 版本，而不是不一定相同的最大安装版本。此解决方案的唯一警告是它在 .NET 3.5 或更低版本中不起作用，但我很乐意在这些情况下使用 Environment.Version。 我喜欢这种简单性，但请注意 AppDomain.CurrentDomain.SetupInformation.TargetFrameworkName 直到 .Net 4,5 才引入。如果只安装了 .Net 4.0，这段代码会起作用吗？ @Giles 你是对的。我已经更新了我的解决方案以考虑到这一点。【参考方案7】：AFAIK 框架中没有内置方法允许您执行此操作。您可以查看post 以获取有关通过读取 Windows 注册表值来确定框架版本的建议。
【讨论】：
【参考方案8】：此类允许您的应用程序抛出一个优雅的通知消息，而不是在找不到合适的 .NET 版本时崩溃和烧毁。您需要做的就是在您的主代码中：
[STAThread]
static void Main(string[] args)
if (!DotNetUtils.IsCompatible())
return;
. . .
默认情况下它需要 4.5.2，但您可以根据自己的喜好调整它，类（随意将 MessageBox 替换为 Console）：
为 4.8 更新：
public class DotNetUtils
public enum DotNetRelease
NOTFOUND,
NET45,
NET451,
NET452,
NET46,
NET461,
NET462,
NET47,
NET471,
NET472,
NET48,
public static bool IsCompatible(DotNetRelease req = DotNetRelease.NET452)
DotNetRelease r = GetRelease();
if (r < req)
MessageBox.Show(String.Format("This this application requires 0 or greater.", req.ToString()));
return false;
return true;
public static DotNetRelease GetRelease(int release = default(int))
int r = release != default(int) ? release : GetVersion();
if (r >= 528040) return DotNetRelease.NET48;
if (r >= 461808) return DotNetRelease.NET472;
if (r >= 461308) return DotNetRelease.NET471;
if (r >= 460798) return DotNetRelease.NET47;
if (r >= 394802) return DotNetRelease.NET462;
if (r >= 394254) return DotNetRelease.NET461;
if (r >= 393295) return DotNetRelease.NET46;
if (r >= 379893) return DotNetRelease.NET452;
if (r >= 378675) return DotNetRelease.NET451;
if (r >= 378389) return DotNetRelease.NET45;
return DotNetRelease.NOTFOUND;
public static int GetVersion()
int release = 0;
using (RegistryKey key = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32)
.OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
release = Convert.ToInt32(key.GetValue("Release"));
return release;
以后添加新版本时可以轻松扩展。在 4.5 之前我什么都没有打扰，但你明白了。
【讨论】：
为4.7.1更新，修订号取自docs.microsoft.com/en-us/dotnet/framework/migration-guide/…
IsCompatible() 的好主意 - 兼容性可能是查询 .Net 版本的最常见原因。【参考方案9】：
我试图将所有答案组合成一个整体。
使用：
NetFrameworkUtilities.GetVersion() 将返回当前可用的 .NET Framework Version，如果不存在，则返回 null。
此示例适用于 .NET Framework 3.5+ 版本。它不需要管理员权限。
我想指出，您可以使用运算符 来检查版本，如下所示：
var version = NetFrameworkUtilities.GetVersion();
if (version != null && version < new Version(4, 5))
MessageBox.Show("Your .NET Framework version is less than 4.5");
代码：
using System;
using System.Linq;
using Microsoft.Win32;
namespace Utilities
public static class NetFrameworkUtilities
public static Version GetVersion() => GetVersionHigher4() ?? GetVersionLowerOr4();
private static Version GetVersionLowerOr4()
using (var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP"))
var names = key?.GetSubKeyNames();
//version names start with 'v', eg, 'v3.5' which needs to be trimmed off before conversion
var text = names?.LastOrDefault()?.Remove(0, 1);
if (string.IsNullOrEmpty(text))
return null;
return text.Contains('.')
? new Version(text)
: new Version(Convert.ToInt32(text), 0);
private static Version GetVersionHigher4()
using (var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full"))
var value = key?.GetValue("Release");
if (value == null)
return null;
// Checking the version using >= will enable forward compatibility,
// however you should always compile your code on newer versions of
// the framework to ensure your app works the same.
var releaseKey = Convert.ToInt32(value);
if (releaseKey >= 528040) return new Version(4, 8, 0);
if (releaseKey >= 461808) return new Version(4, 7, 2);
if (releaseKey >= 461308) return new Version(4, 7, 1);
if (releaseKey >= 460798) return new Version(4, 7);
if (releaseKey >= 394747) return new Version(4, 6, 2);
if (releaseKey >= 394254) return new Version(4, 6, 1);
if (releaseKey >= 381029) return new Version(4, 6);
if (releaseKey >= 379893) return new Version(4, 5, 2);
if (releaseKey >= 378675) return new Version(4, 5, 1);
if (releaseKey >= 378389) return new Version(4, 5);
// This line should never execute. A non-null release key should mean
// that 4.5 or later is installed.
return new Version(4, 5);
【讨论】：
好主意，我不知道内置System.Version 类。【参考方案10】：
public class DA
public static class VersionNetFramework
public static string GetVersion()
return Environment.Version.ToString();
public static string GetVersionDicription()
int Major = Environment.Version.Major;
int Minor = Environment.Version.Minor;
int Build = Environment.Version.Build;
int Revision = Environment.Version.Revision;
//http://dzaebel.net/NetVersionen.htm
//http://***.com/questions/12971881/how-to-reliably-detect-the-actual-net-4-5-version-installed
//4.0.30319.42000 = .NET 4.6 on Windows 8.1 64 - bit
if ((Major >=4) && (Minor >=0) && (Build >= 30319) && (Revision >= 42000))
return @".NET 4.6 on Windows 8.1 64 - bit or later";
//4.0.30319.34209 = .NET 4.5.2 on Windows 8.1 64 - bit
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 34209))
return @".NET 4.5.2 on Windows 8.1 64 - bit or later";
//4.0.30319.34209 = .NET 4.5.2 on Windows 7 SP1 64 - bit
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 34209))
return @".NET 4.5.2 on Windows 7 SP1 64 - bit or later";
//4.0.30319.34014 = .NET 4.5.1 on Windows 8.1 64 - bit
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 34014))
return @".NET 4.5.1 on Windows 8.1 64 - bit or later";
//4.0.30319.18444 = .NET 4.5.1 on Windows 7 SP1 64 - bit(with MS14 - 009 security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 18444))
return @".NET 4.5.1 on Windows 7 SP1 64 - bit(with MS14 - 009 security update) or later";
//4.0.30319.18408 = .NET 4.5.1 on Windows 7 SP1 64 - bit
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 18408))
return @".NET 4.5.1 on Windows 7 SP1 64 - bit or later";
//4.0.30319.18063 = .NET 4.5 on Windows 7 SP1 64 - bit(with MS14 - 009 security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 18063))
return @".NET 4.5 on Windows 7 SP1 64 - bit(with MS14 - 009 security update) or later";
//4.0.30319.18052 = .NET 4.5 on Windows 7 SP1 64 - bit
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 18052))
return @".NET 4.5 on Windows 7 SP1 64 - bit or later";
//4.0.30319.18010 = .NET 4.5 on Windows 8
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 18010))
return @".NET 4.5 on Windows 8 or later";
//4.0.30319.17929 = .NET 4.5 RTM
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 17929))
return @".NET 4.5 RTM or later";
//4.0.30319.17626 = .NET 4.5 RC
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 17626))
return @".NET 4.5 RC or later";
//4.0.30319.17020.NET 4.5 Preview, September 2011
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 17020))
return @".NET 4.5 Preview, September 2011 or later";
//4.0.30319.2034 = .NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS14 - 009 LDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 2034))
return @".NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS14 - 009 LDR security update) or later";
//4.0.30319.1026 = .NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS14 - 057 GDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 1026))
return @".NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS14 - 057 GDR security update) or later";
//4.0.30319.1022 = .NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS14 - 009 GDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 1022))
return @".NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS14 - 009 GDR security update) or later";
//4.0.30319.1008 = .NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS13 - 052 GDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 1008))
return @".NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS13 - 052 GDR security update) or later";
//4.0.30319.544 = .NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS12 - 035 LDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 544))
return @".NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS12 - 035 LDR security update) or later";
//4.0.30319.447 yes built by: RTMLDR, .NET 4.0 Platform Update 1, April 2011
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 447))
return @"built by: RTMLDR, .NET 4.0 Platform Update 1, April 2011 or later";
//4.0.30319.431 yes built by: RTMLDR, .NET 4.0 GDR Update, March 2011 / with VS 2010 SP1 / or.NET 4.0 Update
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 431))
return @"built by: RTMLDR, .NET 4.0 GDR Update, March 2011 / with VS 2010 SP1 / or.NET 4.0 Update or later";
//4.0.30319.296 = .NET 4.0 on Windows XP SP3, 7(with MS12 - 074 GDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 296))
return @".NET 4.0 on Windows XP SP3, 7(with MS12 - 074 GDR security update) or later";
//4.0.30319.276 = .NET 4.0 on Windows XP SP3 (4.0.3 Runtime update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 276))
return @".NET 4.0 on Windows XP SP3 (4.0.3 Runtime update) or later";
//4.0.30319.269 = .NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS12 - 035 GDR security update)
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 269))
return @".NET 4.0 on Windows XP SP3, 7, 7 SP1(with MS12 - 035 GDR security update) or later";
//4.0.30319.1 yes built by: RTMRel, .NET 4.0 RTM Release, April 2010
if ((Major >= 4) && (Minor >= 0) && (Build >= 30319) && (Revision >= 1))
return @"built by: RTMRel, .NET 4.0 RTM Release, April 2010 or later";
//4.0.30128.1 built by: RC1Rel, .NET 4.0 Release Candidate, Feb 2010
if ((Major >=4) && (Minor >=0) && (Build >= 30128) && (Revision >= 1))
return @"built by: RC1Rel, .NET 4.0 Release Candidate, Feb 2010 or later";
//4.0.21006.1 built by: B2Rel, .NET 4.0 Beta2, Oct 2009
if ((Major >=4) && (Minor >=0) && (Build >= 21006) && (Revision >=1))
return @"built by: B2Rel, .NET 4.0 Beta2, Oct 2009 or later";
//4.0.20506.1 built by: Beta1, .NET 4.0 Beta1, May 2009
if ((Major >=4) && (Minor >=0) && (Build >= 20506) && (Revision >=1))
return @"built by: Beta1, .NET 4.0 Beta1, May 2009 or later";
//4.0.11001.1 built by: CTP2 VPC, .NET 4.0 CTP, October 2008
if ((Major >=4) && (Minor >=0) && (Build >= 11001) && (Revision >=1))
return @"built by: CTP2 VPC, .NET 4.0 CTP, October 2008 or later";
//3.5.30729.5420 yes built by: Win7SP1, .NET 3.5.1 Sicherheits - Update, 12 April 2011
if ((Major >=3) && (Minor >=5) && (Build >= 30729) && (Revision >= 5420))
return @"built by: Win7SP1, .NET 3.5.1 Sicherheits - Update, 12 April 2011 or later";
//3.5.30729.5004 yes built by: NetFXw7 / Windows 7..Rel., Jan 2010 / +Data functions KB976127 .NET 3.5 SP1
if ((Major >=3) && (Minor >=5) && (Build >= 30729) && (Revision >= 5004))
return @"built by: NetFXw7 / Windows 7..Rel., Jan 2010 / +Data functions KB976127 .NET 3.5 SP1 or later";
//3.5.30729.4466 yes built by: NetFXw7 / Windows XP..Rel. , Jan 2010 / +Data functions KB976127 .NET 3.5 SP1
if ((Major >=3) && (Minor >=5) && (Build >= 30729) && (Revision >= 4466))
return @"built by: NetFXw7 / Windows XP..Rel. , Jan 2010 / +Data functions KB976127 .NET 3.5 SP1 or later";
//3.5.30729.4926 yes built by: NetFXw7 / Windows 7 Release, Oct 2009 / .NET 3.5 SP1 + Hotfixes
if ((Major >=3) && (Minor >=5) && (Build >= 30729) && (Revision >= 4926))
return @"built by: NetFXw7 / Windows 7 Release, Oct 2009 / .NET 3.5 SP1 + Hotfixes or later";
//3.5.30729.4918 built by: NetFXw7 / Windows 7 Release Candidate, June 2009
if ((Major >=3) && (Minor >=5) && (Build >= 30729) && (Revision >= 4918))
return @"built by: NetFXw7 / Windows 7 Release Candidate, June 2009 or later";
//3.5.30729.196 yes built by: QFE, .NET 3.5 Family Update Vista / W2008, Dec 2008
if ((Major >= 3) && (Minor >= 5) && (Build >= 30729) && (Revision >=196))
return @"built by: QFE, .NET 3.5 Family Update Vista / W2008, Dec 2008 or later";
//3.5.30729.1 yes built by: SP, .NET 3.5 SP1, Aug 2008
if ((Major >= 3) && (Minor >= 5) && (Build >= 30729) && (Revision >=1))
return @"built by: SP, .NET 3.5 SP1, Aug 2008 or later";
//3.5.30428.1 built by: SP1Beta1, .NET 3.5 SP1 BETA1, May 2008
if ((Major >=3) && (Minor >=5) && (Build >= 30428) && (Revision >=1))
return @"built by: SP1Beta1, .NET 3.5 SP1 BETA1, May 2008 or later";
//3.5.21022.8 yes built by: RTM, Jan 2008
if ((Major >=3) && (Minor >=5) && (Build >= 21022) && (Revision >= 8))
return @"built by: RTM, Jan 2008 or later";
//3.5.20706.1 built by: Beta2, Orcas Beta2, Oct 2007
if ((Major >=3) && (Minor >=5) && (Build >= 20706) && (Revision >= 1))
return @"built by: Beta2, Orcas Beta2, Oct 2007 or later";
//3.5.20526.0 built by: MCritCTP, Orcas Beta1, Mar 2007
if ((Major >=3) && (Minor >=5) && (Build >= 20526) && (Revision >=0))
return @"built by: MCritCTP, Orcas Beta1, Mar 2007 or later";
//3.0.6920.1500 yes built by: QFE, Family Update Vista / W2008, Dez 2008, KB958483
if ((Major >=3) && (Minor >=0) && (Build >= 6920) && (Revision >= 1500))
return @"built by: QFE, Family Update Vista / W2008, Dez 2008, KB958483 or later";
//3.0.4506.4926 yes(NetFXw7.030729 - 4900) / Windows 7 Release, Oct 2009
if ((Major >=3) && (Minor >=0) && (Build >= 4506) && (Revision >= 4926))
return @"(NetFXw7.030729 - 4900) / Windows 7 Release, Oct 2009 or later";
//3.0.4506.4918(NetFXw7.030729 - 4900) / Windows 7 Release Candidate, June 2009
if ((Major >=3) && (Minor >=5) && (Build >= 4506) && (Revision >= 4918))
return @"(NetFXw7.030729 - 4900) / Windows 7 Release Candidate, June 2009 or later";
//3.0.4506.2152 3.0.4506.2152(SP.030729 - 0100) / .NET 4.0 Beta1 / May 2009
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 2152))
return @"3.0.4506.2152(SP.030729 - 0100) / .NET 4.0 Beta1 / May 2009 or later";
//3.0.4506.2123 yes(NetFX.030618 - 0000).NET 3.0 SP2, Aug 2008
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 2123))
return @"s(NetFX.030618 - 0000).NET 3.0 SP2, Aug 2008 or later";
//3.0.4506.2062(SP1Beta1.030428 - 0100), .NET 3.0 SP1 BETA1, May 2008
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 2062))
return @"(SP1Beta1.030428 - 0100), .NET 3.0 SP1 BETA1, May 2008 or later";
//3.0.4506.590(winfxredb2.004506 - 0590), Orcas Beta2, Oct 2007
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 590))
return @"(winfxredb2.004506 - 0590), Orcas Beta2, Oct 2007 or later";
//3.0.4506.577(winfxred.004506 - 0577), Orcas Beta1, Mar 2007
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 577))
return @"(winfxred.004506 - 0577), Orcas Beta1, Mar 2007 or later";
//3.0.4506.30 yes Release (.NET Framework 3.0) Nov 2006
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 30))
return @"Release (.NET Framework 3.0) Nov 2006 or later";
//3.0.4506.25 yes(WAPRTM.004506 - 0026) Vista Ultimate, Jan 2007
if ((Major >= 3) && (Minor >= 5) && (Build >= 4506) && (Revision >= 25))
return @"(WAPRTM.004506 - 0026) Vista Ultimate, Jan 2007 or later";
//2.0.50727.4927 yes(NetFXspW7.050727 - 4900) / Windows 7 Release, Oct 2009
if ((Major >=2) && (Minor >=0) && (Build >= 50727) && (Revision >= 4927))
return @"(NetFXspW7.050727 - 4900) / Windows 7 Release, Oct 2009 or later";
//2.0.50727.4918(NetFXspW7.050727 - 4900) / Windows 7 Release Candidate, June 2009
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 4918))
return @"(NetFXspW7.050727 - 4900) / Windows 7 Release Candidate, June 2009 or later";
//2.0.50727.4200 yes(NetFxQFE.050727 - 4200).NET 2.0 SP2, KB974470, Securityupdate, Oct 2009
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 4200))
return @"(NetFxQFE.050727 - 4200).NET 2.0 SP2, KB974470, Securityupdate, Oct 2009 or later";
//2.0.50727.3603(GDR.050727 - 3600).NET 4.0 Beta 2, Oct 2009
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 3603))
return @"(GDR.050727 - 3600).NET 4.0 Beta 2, Oct 2009 or later";
//2.0.50727.3082 yes(QFE.050727 - 3000), .NET 3.5 Family Update XP / W2003, Dez 2008, KB958481
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 3082))
return @"(QFE.050727 - 3000), .NET 3.5 Family Update XP / W2003, Dez 2008, KB958481 or later";
//2.0.50727.3074 yes(QFE.050727 - 3000), .NET 3.5 Family Update Vista / W2008, Dez 2008, KB958481
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 3074))
return @"(QFE.050727 - 3000), .NET 3.5 Family Update Vista / W2008, Dez 2008, KB958481 or later";
//2.0.50727.3053 yes(netfxsp.050727 - 3000), .NET 2.0 SP2, Aug 2008
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 3053))
return @"yes(netfxsp.050727 - 3000), .NET 2.0 SP2, Aug 2008 or later";
//2.0.50727.3031(netfxsp.050727 - 3000), .NET 2.0 SP2 Beta 1, May 2008
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 3031))
return @"(netfxsp.050727 - 3000), .NET 2.0 SP2 Beta 1, May 2008 or later";
//2.0.50727.1434 yes(REDBITS.050727 - 1400), Windows Server 2008 and Windows Vista SP1, Dez 2007
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 1434))
return @"(REDBITS.050727 - 1400), Windows Server 2008 and Windows Vista SP1, Dez 2007 or later";
//2.0.50727.1433 yes(REDBITS.050727 - 1400), .NET 2.0 SP1 Release, Nov 2007, http://www.microsoft.com/downloads/details.aspx?FamilyID=79bc3b77-e02c-4ad3-aacf-a7633f706ba5
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 1433))
return @"(REDBITS.050727 - 1400), .NET 2.0 SP1 Release, Nov 2007 or later";
//2.0.50727.1378(REDBITSB2.050727 - 1300), Orcas Beta2, Oct 2007
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 1378))
return @"(REDBITSB2.050727 - 1300), Orcas Beta2, Oct 2007 or later";
//2.0.50727.1366(REDBITS.050727 - 1300), Orcas Beta1, Mar 2007
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 1366))
return @"(REDBITS.050727 - 1300), Orcas Beta1, Mar 2007 or later";
//2.0.50727.867 yes(VS Express Edition 2005 SP1), Apr 2007, http://www.microsoft.com/downloads/details.aspx?FamilyId=7B0B0339-613A-46E6-AB4D-080D4D4A8C4E
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 867))
return @"(VS Express Edition 2005 SP1), Apr 2007 or later";
//2.0.50727.832(Fix x86 VC++2005), Apr 2007, http://support.microsoft.com/kb/934586/en-us
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 832))
return @"(Fix x86 VC++2005), Apr 2007 or later";
//2.0.50727.762 yes(VS TeamSuite SP1), http://www.microsoft.com/downloads/details.aspx?FamilyId=BB4A75AB-E2D4-4C96-B39D-37BAF6B5B1DC
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 762))
return @"(VS TeamSuite SP1) or later";
//2.0.50727.312 yes(rtmLHS.050727 - 3100) Vista Ultimate, Jan 2007
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 312))
return @"(rtmLHS.050727 - 3100) Vista Ultimate, Jan 2007 or later";
//2.0.50727.42 yes Release (.NET Framework 2.0) Oct 2005
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 42))
return @"Release (.NET Framework 2.0) Oct 2005 or later";
//2.0.50727.26 Version 2.0(Visual Studio Team System 2005 Release Candidate) Oct 2005
if ((Major >= 2) && (Minor >= 0) && (Build >= 50727) && (Revision >= 26))
return @"Version 2.0(Visual Studio Team System 2005 Release Candidate) Oct 2005 or later";
//2.0.50712 Version 2.0(Visual Studio Team System 2005(Drop3) CTP) July 2005
if ((Major >=2) && (Minor >=0) && (Build >= 50712))
return @"Version 2.0(Visual Studio Team System 2005(Drop3) CTP) July 2005 or later";
//2.0.50215 Version 2.0(WinFX SDK for Indigo / Avalon 2005 CTP) July 2005
if ((Major >=2) && (Minor >=0) && (Build >= 50215))
return @"Version 2.0(WinFX SDK for Indigo / Avalon 2005 CTP) July 2005 or later";
//2.0.50601.0 Version 2.0(Visual Studio.NET 2005 CTP) June 2005
if ((Major >=2) && (Minor >=0) && (Build >= 50601) && (Revision >=0))
return @"Version 2.0(Visual Studio.NET 2005 CTP) June 2005 or later";
//2.0.50215.44 Version 2.0(Visual Studio.NET 2005 Beta 2, Visual Studio Express Beta 2) Apr 2005
if ((Major >=2) && (Minor >=0) && (Build >= 50215) && (Revision >= 44))
return @"Version 2.0(Visual Studio.NET 2005 Beta 2, Visual Studio Express Beta 2) Apr 2005 or later";
//2.0.50110.28 Version 2.0(Visual Studio.NET 2005 CTP, Professional Edition) Feb 2005
if ((Major >=2) && (Minor >=0) && (Build >= 50110) && (Revision >=28))
return @"Version 2.0(Visual Studio.NET 2005 CTP, Professional Edition) Feb 2005 or later";
//2.0.41115.19 Version 2.0(Visual Studio.NET 2005 Beta 1, Team System Refresh) Dec 2004
if ((Major >=2 ) && (Minor >=0 ) && (Build >= 41115) && (Revision >= 19))
return @"Version 2.0(Visual Studio.NET 2005 Beta 1, Team System Refresh) Dec 2004 or later";
//2.0.40903.0 Version 2.0(Whidbey CTP, Visual Studio Express) Oct 2004
if ((Major >=2) && (Minor >=0) && (Build >= 40903) && (Revision >=0))
return @"Version 2.0(Whidbey CTP, Visual Studio Express) Oct 2004 or later";
//2.0.40607.85 Version 2.0(Visual Studio.NET 2005 Beta 1, Team System Refresh) Aug 2004 *
if ((Major >=2) && (Minor >=0) && (Build >= 40607) && (Revision >= 85))
return @"Version 2.0(Visual Studio.NET 2005 Beta 1, Team System Refresh) Aug 2004 * or later";
//2.0.40607.42 Version 2.0(SQL Server Yukon Beta 2) July 2004
if ((Major >=2) && (Minor >=0) && (Build >= 40607) && (Revision >= 42))
return @"Version 2.0(SQL Server Yukon Beta 2) July 2004 or later";
//2.0.40607.16 Version 2.0(Visual Studio.NET 2005 Beta 1, TechEd Europe 2004) June 2004
if ((Major >=2) && (Minor >=0) && (Build >= 40607) && (Revision >= 16))
return @"Version 2.0(Visual Studio.NET 2005 Beta 1, TechEd Europe 2004) June 2004 or later";
//2.0.40301.9 Version 2.0(Whidbey CTP, WinHEC 2004) March 2004 *
if ((Major >=0) && (Minor >=0) && (Build >= 40301) && (Revision >=9))
return @"Version 2.0(Whidbey CTP, WinHEC 2004) March 2004 * or later";
//1.2.30703.27 Version 1.2(Whidbey Alpha, PDC 2004) Nov 2003 *
if ((Major >=1) && (Minor >=2) && (Build >= 30703) && (Revision >= 27))
return @"Version 1.2(Whidbey Alpha, PDC 2004) Nov 2003 * or later";
//1.2.21213.1 Version 1.2(Whidbey pre - Alpha build) *
if ((Major >=1) && (Minor >=2) && (Build >= 21213) && (Revision >=1))
return @"Version 1.2(Whidbey pre - Alpha build) * or later";
//1.1.4322.2443 yes Version 1.1 Servicepack 1, KB953297, Oct 2009
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >=2443))
return @"Version 1.1 Servicepack 1, KB953297, Oct 2009 or later";
//1.1.4322.2407 yes Version 1.1 RTM
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >= 2407))
return @"Version 1.1 RTM or later";
//1.1.4322.2407 Version 1.1 Orcas Beta2, Oct 2007
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >= 2407))
return @"Version 1.1 Orcas Beta2, Oct 2007 or later";
//1.1.4322.2379 Version 1.1 Orcas Beta1, Mar 2007
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >= 2379))
return @"Version 1.1 Orcas Beta1, Mar 2007 or later";
//1.1.4322.2032 yes Version 1.1 SP1 Aug 2004
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >= 2032))
return @"Version 1.1 SP1 Aug 2004 or later";
//1.1.4322.573 yes Version 1.1 RTM(Visual Studio.NET 2003 / Windows Server 2003) Feb 2003 *
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >= 573))
return @"Version 1.1 RTM(Visual Studio.NET 2003 / Windows Server 2003) Feb 2003 * or later";
//1.1.4322.510 Version 1.1 Final Beta Oct 2002 *
if ((Major >=1) && (Minor >=1) && (Build >= 4322) && (Revision >= 510))
return @"Version 1.1 Final Beta Oct 2002 * or later";
//1.0.3705.6018 yes Version 1.0 SP3 Aug 2004
if ((Major >=1) && (Minor >=0) && (Build >= 3705) && (Revision >= 6018))
return @"Version 1.0 SP3 Aug 2004 or later";
//1.0.3705.288 yes Version 1.0 SP2 Aug 2002 *
if ((Major >=1) && (Minor >=0) && (Build >= 3705) && (Revision >= 288))
return @"Version 1.0 SP2 Aug 2002 * or later";
//1.0.3705.209 yes Version 1.0 SP1 Mar 2002 *
if ((Major >=1) && (Minor >=0) && (Build >= 3705) && (Revision >=209))
return @"Version 1.0 SP1 Mar 2002 * or later";
//1.0.3705.0 yes Version 1.0 RTM(Visual Studio.NET 2002) Feb 2002 *
if ((Major >=1) && (Minor >=0) && (Build >= 3705) && (Revision >=0))
return @"Version 1.0 RTM(Visual Studio.NET 2002) Feb 2002 * or later";
//1.0.3512.0 Version 1.0 Pre - release RC3(Visual Studio.NET 2002 RC3)
if ((Major >=1) && (Minor >=0) && (Build >= 3512) && (Revision >=0))
return @"Version 1.0 Pre - release RC3(Visual Studio.NET 2002 RC3) or later";
//1.0.2914.16 Version 1.0 Public Beta 2 Jun 2001 *
if ((Major >=1) && (Minor >=0) && (Build >= 2914) && (Revision >= 16))
return @"Version 1.0 Public Beta 2 Jun 2001 * or later";
//1.0.2204.21 Version 1.0 Public Beta 1 Nov 2000 *
if ((Major >=1) && (Minor >=0) && (Build >= 2204) && (Revision >=21))
return @"Version 1.0 Public Beta 1 Nov 2000 * or later";
return @"Unknown .NET version";
【讨论】：
正文限制30000个字符所有代码是34045个字符这个最重的代码部分 这很好，但你能把它删减成适合作为单一答案的东西吗？ 然而这部分代码只提供了一种方法 DA.VersionNetFramework.GetVersionDicription() 仅供参考，我将其构建为 2.0 应用程序，将其放入控制台并在具有 4.6 的系统上返回“'2.0.50727.5485'”，因此看起来 Environment.Version 可能不会返回已安装的内容与运行应用程序所使用的一样多看起来唯一安全的方法是检查注册表。 对于 NET Framework 4.7 和 NET Framework 4.7.1 呢？跨度> 【参考方案11】：感谢您的这篇非常有用的帖子。 我不得不稍微调整一下以检查框架 2.0，因为注册表项不能直接转换为双精度。代码如下：
string[] version_names = rk.GetSubKeyNames();
//version names start with 'v', eg, 'v3.5'
//we also need to take care of strings like v2.0.50727...
string sCurrent = version_names[version_names.Length - 1].Remove(0, 1);
if (sCurrent.LastIndexOf(".") > 1)
string[] sSplit = sCurrent.Split('.');
sCurrent = sSplit[0] + "." + sSplit[1] + sSplit[2];
double dCurrent = Convert.ToDouble(sCurrent, System.Globalization.CultureInfo.InvariantCulture);
double dExpected = Convert.ToDouble(sExpectedVersion);
if (dCurrent >= dExpected)
【讨论】：
您真的不应该将版本号存储为双精度数。他们很容易四舍五入。使用小数。【参考方案12】：public class DA
public static class VersionNetFramework
public static string Get45or451FromRegistry()
//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
int releaseKey = Convert.ToInt32(ndpKey.GetValue("Release"));
if (true)
return (@"Version: " + CheckFor45DotVersion(releaseKey));
// Checking the version using >= will enable forward compatibility,
// however you should always compile your code on newer versions of
// the framework to ensure your app works the same.
private static string CheckFor45DotVersion(int releaseKey)
//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
if (releaseKey >= 394271)
return "4.6.1 installed on all other Windows OS versions or later";
if (releaseKey >= 394254)
return "4.6.1 installed on Windows 10 or later";
if (releaseKey >= 393297)
return "4.6 installed on all other Windows OS versions or later";
if (releaseKey >= 393295)
return "4.6 installed with Windows 10 or later";
if (releaseKey >= 379893)
return "4.5.2 or later";
if (releaseKey >= 378758)
return "4.5.1 installed on Windows 8, Windows 7 SP1, or Windows Vista SP2 or later";
if (releaseKey >= 378675)
return "4.5.1 installed with Windows 8.1 or later";
if (releaseKey >= 378389)
return "4.5 or later";
return "No 4.5 or later version detected";
public static string GetVersionFromRegistry()
//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
string res = @"";
// Opens the registry key for the .NET Framework entry.
using (RegistryKey ndpKey =
RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "").
OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
// As an alternative, if you know the computers you will query are running .NET Framework 4.5
// or later, you can use:
// using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine,
// RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
foreach (string versionKeyName in ndpKey.GetSubKeyNames())
if (versionKeyName.StartsWith("v"))
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
string name = (string)versionKey.GetValue("Version", "");
string sp = versionKey.GetValue("SP", "").ToString();
string install = versionKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
res += (versionKeyName + " " + name) + Environment.NewLine;
else
if (sp != "" && install == "1")
res += (versionKeyName + " " + name + " SP" + sp) + Environment.NewLine;
if (name != "")
continue;
foreach (string subKeyName in versionKey.GetSubKeyNames())
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name = (string)subKey.GetValue("Version", "");
if (name != "")
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
res += (versionKeyName + " " + name) + Environment.NewLine;
else
if (sp != "" && install == "1")
res += (" " + subKeyName + " " + name + " SP" + sp) + Environment.NewLine;
else if (install == "1")
res += (" " + subKeyName + " " + name) + Environment.NewLine;
return res;
public static string GetUpdateHistory()
//https://msdn.microsoft.com/en-us/library/hh925567(v=vs.110).aspx
string res=@"";
using (RegistryKey baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\Updates"))
foreach (string baseKeyName in baseKey.GetSubKeyNames())
if (baseKeyName.Contains(".NET Framework") || baseKeyName.StartsWith("KB") || baseKeyName.Contains(".NETFramework"))
using (RegistryKey updateKey = baseKey.OpenSubKey(baseKeyName))
string name = (string)updateKey.GetValue("PackageName", "");
res += baseKeyName + " " + name + Environment.NewLine;
foreach (string kbKeyName in updateKey.GetSubKeyNames())
using (RegistryKey kbKey = updateKey.OpenSubKey(kbKeyName))
name = (string)kbKey.GetValue("PackageName", "");
res += (" " + kbKeyName + " " + name) + Environment.NewLine;
if (kbKey.SubKeyCount > 0)
foreach (string sbKeyName in kbKey.GetSubKeyNames())
using (RegistryKey sbSubKey = kbKey.OpenSubKey(sbKeyName))
name = (string)sbSubKey.GetValue("PackageName", "");
if (name == "")
name = (string)sbSubKey.GetValue("Description", "");
res += (" " + sbKeyName + " " + name) + Environment.NewLine;
return res;
使用 DA.VersionNetFramework 类
private void Form1_Shown(object sender, EventArgs e)
//
// Current OS Information
//
richTextBox1.Text = @"Current OS Information:";
richTextBox1.AppendText(Environment.NewLine +
"Machine Name: " + Environment.MachineName);
richTextBox1.AppendText(Environment.NewLine +
"Platform: " + Environment.OSVersion.Platform.ToString());
richTextBox1.AppendText(Environment.NewLine +
Environment.OSVersion);
//
// .NET Framework Environment Information
//
richTextBox1.AppendText(Environment.NewLine + Environment.NewLine +
".NET Framework Environment Information:");
richTextBox1.AppendText(Environment.NewLine +
"Environment.Version " + Environment.Version);
richTextBox1.AppendText(Environment.NewLine +
DA.VersionNetFramework.GetVersionDicription());
//
// .NET Framework Information From Registry
//
richTextBox1.AppendText(Environment.NewLine + Environment.NewLine +
".NET Framework Information From Registry:");
richTextBox1.AppendText(Environment.NewLine +
DA.VersionNetFramework.GetVersionFromRegistry());
//
// .NET Framework 4.5 or later Information From Registry
//
richTextBox1.AppendText(Environment.NewLine +
".NET Framework 4.5 or later Information From Registry:");
richTextBox1.AppendText(Environment.NewLine +
DA.VersionNetFramework.Get45or451FromRegistry());
//
// Update History
//
richTextBox1.AppendText(Environment.NewLine + Environment.NewLine +
"Update History");
richTextBox1.AppendText(Environment.NewLine +
DA.VersionNetFramework.GetUpdateHistory());
//
// Setting Cursor to first character of textbox
//
if (!richTextBox1.Text.Equals(""))
richTextBox1.SelectionStart = 1;
结果：
当前操作系统信息： 机器名称：D1 平台：Win32NT 微软视窗 NT 6.2.9200.0
.NET Framework 环境信息： 环境.版本 4.0.30319.42000 Windows 8.1 64 位或更高版本上的 .NET 4.6
来自注册表的 .NET Framework 信息： v2.0.50727 2.0.50727.4927 SP2 v3.0 3.0.30729.4926 SP2 v3.5 3.5.30729.4926 SP1
v4 客户端 4.6.00079 完整的 4.6.00079 v4.0 客户端 4.0.0.0
.NET Framework 4.5 或更高版本 来自注册表的信息： 版本：4.6 随 Windows 10 或更高版本安装
更新历史 Microsoft .NET Framework 4 客户端配置文件 KB2468871 KB2468871v2 KB2478063 KB2533523 KB2544514 KB2600211 KB2600217 Microsoft .NET Framework 4 扩展版 KB2468871 KB2468871v2 KB2478063 KB2533523 KB2544514 KB2600211 KB2600217 Microsoft .NET Framework 4 多目标包 (KB2504637) 的 KB2504637 更新
【讨论】：
正文限制30000个字符所有代码是34045个字符这个最轻的代码部分 对于 NET Framework 4.7 和 NET Framework 4.7.1 呢？跨度> 【参考方案13】：我已经更改了 Matt 的类，因此它可以在任何项目中重复使用，而无需在控制台上打印所有检查并返回一个安装了正确最大版本的简单字符串。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Win32;
namespace MyNamespace
public class DotNetVersion
protected bool printVerification;
public DotNetVersion()
this.printVerification=false;
public DotNetVersion(bool printVerification)
this.printVerification=printVerification;
public string getDotNetVersion()
string maxDotNetVersion = getVersionFromRegistry();
if(String.Compare(maxDotNetVersion, "4.5") >= 0)
string v45Plus = get45PlusFromRegistry();
if(!string.IsNullOrWhiteSpace(v45Plus)) maxDotNetVersion = v45Plus;
log("*** Maximum .NET version number found is: " + maxDotNetVersion + "***");
return maxDotNetVersion;
protected string get45PlusFromRegistry()
String dotNetVersion = "";
const string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\";
using(RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(subkey))
if(ndpKey != null && ndpKey.GetValue("Release") != null)
dotNetVersion = checkFor45PlusVersion((int)ndpKey.GetValue("Release"));
log(".NET Framework Version: " + dotNetVersion);
else
log(".NET Framework Version 4.5 or later is not detected.");
return dotNetVersion;
// Checking the version using >= will enable forward compatibility.
protected string checkFor45PlusVersion(int releaseKey)
if(releaseKey >= 461308) return "4.7.1 or later";
if(releaseKey >= 460798) return "4.7";
if(releaseKey >= 394802) return "4.6.2";
if(releaseKey >= 394254) return "4.6.1";
if(releaseKey >= 393295) return "4.6";
if((releaseKey >= 379893)) return "4.5.2";
if((releaseKey >= 378675)) return "4.5.1";
if((releaseKey >= 378389)) return "4.5";
// This code should never execute. A non-null release key should mean
// that 4.5 or later is installed.
log("No 4.5 or later version detected");
return "";
protected string getVersionFromRegistry()
String maxDotNetVersion = "";
// Opens the registry key for the .NET Framework entry.
using(RegistryKey ndpKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "")
.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
// As an alternative, if you know the computers you will query are running .NET Framework 4.5
// or later, you can use:
// using(RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine,
// RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
string[] subKeyNnames = ndpKey.GetSubKeyNames();
foreach(string versionKeyName in subKeyNnames)
if(versionKeyName.StartsWith("v"))
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
string name =(string)versionKey.GetValue("Version", "");
string sp = versionKey.GetValue("SP", "").ToString();
string install = versionKey.GetValue("Install", "").ToString();
if(string.IsNullOrWhiteSpace(install)) //no install info, must be later.
log(versionKeyName + " " + name);
if(String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
else
if(!string.IsNullOrWhiteSpace(sp) && "1".Equals(install))
log(versionKeyName + " " + name + " SP" + sp);
if(String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
if(!string.IsNullOrWhiteSpace(name))
continue;
string[] subKeyNames = versionKey.GetSubKeyNames();
foreach(string subKeyName in subKeyNames)
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name =(string)subKey.GetValue("Version", "");
if(!string.IsNullOrWhiteSpace(name))
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if(string.IsNullOrWhiteSpace(install))
//no install info, must be later.
log(versionKeyName + " " + name);
if(String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
else
if(!string.IsNullOrWhiteSpace(sp) && "1".Equals(install))
log(" " + subKeyName + " " + name + " SP" + sp);
if(String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
else if("1".Equals(install))
log(" " + subKeyName + " " + name);
if(String.Compare(maxDotNetVersion, name) < 0) maxDotNetVersion = name;
// if
// if
// for
// if
// foreach
// using
return maxDotNetVersion;
protected void log(string message)
if(printVerification) Console.WriteLine(message);
// class
【讨论】：
【参考方案14】：使用 .NET 4.6.2 更新。检查与先前响应相同的注册表中的 Release 值：
RegistryKey registry_key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full");
if (registry_key == null)
return false;
var val = registry_key.GetValue("Release", 0);
UInt32 Release = Convert.ToUInt32(val);
if (Release >= 394806) // 4.6.2 installed on all other Windows (different than Windows 10)
return true;
if (Release >= 394802) // 4.6.2 installed on Windows 10 or later
return true;
【讨论】：
和updates 用于 NET Framework 4.7 和 NET Framework 4.7.1 ?【参考方案15】：
您可以得到一个有用的字符串，而无需触摸注册表或引用可能会或可能不会加载的程序集。 mscorlib.dll 和其他系统程序集定义了 AssemblyFileVersionAttribute，并且基于 Visual Studio 提供的参考程序集，它似乎对于每个版本的 .NET 都是唯一的。
string version = (typeof(string).Assembly
.GetCustomAttributes(typeof(AssemblyFileVersionAttribute), false)
.FirstOrDefault() as AssemblyFileVersionAttribute)?.Version;
版本 4.5 有点偏离，因为它在该版本中标记为 4.0，但 4.6 及更高版本似乎至少与次要版本匹配。这样做似乎比依赖某些安装程序注册表项并必须与一组固定值进行比较更能证明未来。
我在这里找到了参考程序集：
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework
我从哪里得到以下版本：
4.0 = 4.0.30319.1
4.5 = 4.0.30319.18020
4.5.1 = 4.0.30319.18402
4.5.2 = 4.0.30319.34211
4.6 = 4.6.81.0
4.6.1 = 4.6.1055.0
4.7.2 = 4.7.3062.0
4.8 = 4.8.3761.0
【讨论】：
【参考方案16】：有点大，但看起来它是最新的微软怪事：
public static class Versions
static Version
_NET;
static SortedList<String,Version>
_NETInstalled;
#if NET40
#else
public static bool VersionTry(String S, out Version V)
try
V=new Version(S);
return true;
catch
V=null;
return false;
#endif
const string _NetFrameWorkKey = "SOFTWARE\\Microsoft\\NET Framework Setup\\NDP";
static void FillNetInstalled()
if (_NETInstalled == null)
_NETInstalled = new SortedList<String, Version>(StringComparer.InvariantCultureIgnoreCase);
RegistryKey
frmks = Registry.LocalMachine.OpenSubKey(_NetFrameWorkKey);
string[]
names = frmks.GetSubKeyNames();
foreach (string name in names)
if (name.StartsWith("v", StringComparison.InvariantCultureIgnoreCase) && name.Length > 1)
string
f, vs;
Version
v;
vs = name.Substring(1);
if (vs.IndexOf('.') < 0)
vs += ".0";
#if NET40
if (Version.TryParse(vs, out v))
#else
if (VersionTry(vs, out v))
#endif
f = String.Format("0.1", v.Major, v.Minor);
#if NET40
if (Version.TryParse((string)frmks.OpenSubKey(name).GetValue("Version"), out v))
#else
if (VersionTry((string)frmks.OpenSubKey(name).GetValue("Version"), out v))
#endif
if (!_NETInstalled.ContainsKey(f) || v.CompareTo(_NETInstalled[f]) > 0)
_NETInstalled[f] = v;
else
// parse variants
Version
best = null;
if (_NETInstalled.ContainsKey(f))
best = _NETInstalled[f];
string[]
varieties = frmks.OpenSubKey(name).GetSubKeyNames();
foreach (string variety in varieties)
#if NET40
if (Version.TryParse((string)frmks.OpenSubKey(name + '\\' + variety).GetValue("Version"), out v))
#else
if (VersionTry((string)frmks.OpenSubKey(name + '\\' + variety).GetValue("Version"), out v))
#endif
if (best == null || v.CompareTo(best) > 0)
_NETInstalled[f] = v;
best = v;
vs = f + '.' + variety;
if (!_NETInstalled.ContainsKey(vs) || v.CompareTo(_NETInstalled[vs]) > 0)
_NETInstalled[vs] = v;
// static void FillNetInstalled()
public static Version NETInstalled
get
FillNetInstalled();
return _NETInstalled[_NETInstalled.Keys[_NETInstalled.Count-1]];
// NETInstalled
public static Version NET
get
FillNetInstalled();
string
clr = String.Format("0.1", Environment.Version.Major, Environment.Version.Minor);
Version
found = _NETInstalled[_NETInstalled.Keys[_NETInstalled.Count-1]];
if(_NETInstalled.ContainsKey(clr))
return _NETInstalled[clr];
for (int i = _NETInstalled.Count - 1; i >= 0; i--)
if (_NETInstalled.Keys[i].CompareTo(clr) < 0)
return found;
else
found = _NETInstalled[_NETInstalled.Keys[i]];
return found;
// NET
【讨论】：
【参考方案17】：从 4.5 版开始，Microsoft 更改了在注册表中存储 .NET Framework 指示器的方式。有关如何检索 .NET 框架和 CLR 版本的官方指南可以在这里找到：https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
我在这里包含了他们代码的修改版本，以解决您如何确定 4.5 及更高版本的 .NET 框架的赏金问题：
using System;
using System.Reflection;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Win32;
namespace ***testing
class Program
static void Main(string[] args)
Dictionary<int, String> mappings = new Dictionary<int, string>();
mappings[378389] = "4.5";
mappings[378675] = "4.5.1 on Windows 8.1";
mappings[378758] = "4.5.1 on Windows 8, Windows 7 SP1, and Vista";
mappings[379893] = "4.5.2";
mappings[393295] = "4.6 on Windows 10";
mappings[393297] = "4.6 on Windows not 10";
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
int releaseKey = Convert.ToInt32(ndpKey.GetValue("Release"));
if (true)
Console.WriteLine("Version: " + mappings[releaseKey]);
int a = Console.Read();
【讨论】：
和updates 用于 NET Framework 4.7 和 NET Framework 4.7.1 ?【参考方案18】：
这是我找到的解决方案：
private static string GetDotNetVersion()
var v4 = (string)Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full", false)?.GetValue("Version");
if(v4 != null)
return v4;
var v35 = (string)Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5", false)?.GetValue("Version");
if(v35 != null)
return v35;
var v3 = (string)Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0", false)?.GetValue("Version");
return v3 ?? "< 3";
【讨论】：
【参考方案19】： public static class DotNetHelper
public static Version InstalledVersion
get
string framework = null;
try
using (var ndpKey =
Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
if (ndpKey != null)
var releaseKey = ndpKey.GetValue("Release");
if (releaseKey != null)
framework = CheckFor45PlusVersion(Convert.ToInt32(releaseKey));
else
string[] versionNames = null;
using (var installedVersions =
Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP"))
if (installedVersions != null) versionNames = installedVersions.GetSubKeyNames();
try
if (versionNames != null && versionNames.Length > 0)
framework = versionNames[versionNames.Length - 1].Remove(0, 1);
catch (FormatException)
catch (SecurityException)
return framework != null ? new Version(framework) : null;
private static string CheckFor45PlusVersion(int releaseKey)
if (releaseKey >= 460798)
return "4.7";
if (releaseKey >= 394802)
return "4.6.2";
if (releaseKey >= 394254)
return "4.6.1";
if (releaseKey >= 393295)
return "4.6";
if (releaseKey >= 379893)
return "4.5.2";
if (releaseKey >= 378675)
return "4.5.1";
// This code should never execute. A non-null release key should mean
// that 4.5 or later is installed.
return releaseKey >= 378389 ? "4.5" : null;
【讨论】：
和updates 用于 NET Framework 4.7 和 NET Framework 4.7.1 ?【参考方案20】：
如果您的计算机已连接到 Internet，请转到 smallestdotnet，下载并执行 .NET Checker 可能是最简单的方法。
如果您需要确定版本的实际方法，请查看其在 github 上的 source，尤其是。 Constants.cs 将为您提供 .net 4.5 及更高版本的帮助，其中 Revision 部分是相关的：
int.MinValue, "4.5" ,
378389, "4.5" ,
378675, "4.5.1" ,
378758, "4.5.1" ,
379893, "4.5.2" ,
381029, "4.6 Preview" ,
393273, "4.6 RC1" ,
393292, "4.6 RC2" ,
393295, "4.6" ,
393297, "4.6" ,
394254, "4.6.1" ,
394271, "4.6.1" ,
394747, "4.6.2 Preview" ,
394748, "4.6.2 Preview" ,
394757, "4.6.2 Preview" ,
394802, "4.6.2" ,
394806, "4.6.2" ,
【讨论】：
和updates 用于 NET Framework 4.7 和 NET Framework 4.7.1 ?
@Kiquenet 不幸的是 4.7 和 4.7.1 未包含在源代码中，但您可以使用 issues for release keys - 和/或自己提供拉取请求 ;-)
PS：在你花时间进行拉取请求之前，要知道至少有一个 PR 正在等待一段时间 - 我猜 Scott 最近太忙了。【参考方案21】：
我发现使用Version 类更容易：
using Microsoft.Win32;
using System.Runtime.InteropServices;
namespace System.Runtime.InteropServices
public static class RuntimeInformationEx
public static Version? GetDotnetFrameworkVersion()
using var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full");
if (key is object)
if (!Int32.TryParse(key.GetValue("Release", "").ToString(), out var release)) return null;
return release switch
378389 => new Version(4, 5, 0),
378675 => new Version(4, 5, 1),
378758 => new Version(4, 5, 1),
379893 => new Version(4, 5, 2),
393295 => new Version(4, 6, 0),
393297 => new Version(4, 6, 0),
394254 => new Version(4, 6, 1),
394271 => new Version(4, 6, 1),
394802 => new Version(4, 6, 2),
394806 => new Version(4, 6, 2),
460798 => new Version(4, 7, 0),
460805 => new Version(4, 7, 0),
461308 => new Version(4, 7, 1),
461310 => new Version(4, 7, 1),
461808 => new Version(4, 7, 2),
461814 => new Version(4, 7, 2),
528040 => new Version(4, 8, 0),
528209 => new Version(4, 8, 0),
528049 => new Version(4, 8, 0),
_ => null
;
else // .NET version < 4.5
using var key1 = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP");
if (key1 is null) return null;
var parts = key1.GetSubKeyNames()[^1].Substring(1).Split('.'); // get lastsub key, remove 'v' prefix, and split
if (parts.Length == 2) parts = new string[] parts[0], parts[1], "0" ;
if (parts.Length != 3) return null;
Func<string, int> Parse = s => Int32.TryParse(s, out var i) ? i : -1;
try return new Version(Parse(parts[0]), Parse(parts[1]), Parse(parts[2])); catch return null;
public static Version? GetDotnetCoreVersion()
if (!RuntimeInformation.FrameworkDescription.StartsWith(".NET Core ")) return null;
var parts = RuntimeInformation.FrameworkDescription.Substring(10).Split('.');
if (parts.Length == 2) parts = new string[] parts[0], parts[1], "0" ;
if (parts.Length != 3) return null;
Func<string, int> Parse = s => Int32.TryParse(s, out var i) ? i : -1;
try return new Version(Parse(parts[0]), Parse(parts[1]), Parse(parts[2])); catch return null;
（代码为 C#8）
【讨论】：
两年前的 This answer 已经完成了从"Release" 值到 Versions 的映射。我认为这些信息存储在注册表中的关键点以及此处详细记录的格式；无论是作为string、int、enum 还是Version 呈现给调用者，都只是对同一事物进行了不同的包装。
是的，据我所知，我的答案与那个答案相同，但在一个函数中包含所有 .NET 版本.. 使用版本允许轻松比较等，即var v=RuntimeInformationEx .GetDotnetFrameworkVersion(); if (v<new Version(4,8,0) ...【参考方案22】：
适合那些寻找所有 .net 相关版本的人。
我结合了 .net core+framework 的相关信息。
namespace DotNetVersions
class Program
static void Main(string[] args)
Console.WriteLine("Currently installed \"classic\" .NET Versions in the system:");
//Show all the installed versions
Get1To45VersionFromRegistry();
Get45PlusFromRegistry();
Process p = new Process();
p.StartInfo = new ProcessStartInfo()
FileName = "powershell.exe",
Arguments = $"dotnet --info",
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardOutput = true,
;
p.Start();
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();
Console.WriteLine(output);
//Writes the version
private static void WriteVersion(string version, string spLevel = "")
version = version.Trim();
if (string.IsNullOrEmpty(version))
return;
string spLevelString = "";
if (!string.IsNullOrEmpty(spLevel))
spLevelString = " Service Pack " + spLevel;
Console.WriteLine($"versionspLevelString");
private static void Get1To45VersionFromRegistry()
// Opens the registry key for the .NET Framework entry.
using (RegistryKey ndpKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
foreach (string versionKeyName in ndpKey.GetSubKeyNames())
// Skip .NET Framework 4.5 version information.
if (versionKeyName == "v4")
continue;
if (versionKeyName.StartsWith("v"))
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
// Get the .NET Framework version value.
string name = (string)versionKey.GetValue("Version", "");
// Get the service pack (SP) number.
string sp = versionKey.GetValue("SP", "").ToString();
// Get the installation flag, or an empty string if there is none.
string install = versionKey.GetValue("Install", "").ToString();
if (string.IsNullOrEmpty(install)) // No install info; it must be in a child subkey.
WriteVersion(name);
else
if (!(string.IsNullOrEmpty(sp)) && install == "1")
WriteVersion(name, sp);
if (!string.IsNullOrEmpty(name))
continue;
foreach (string subKeyName in versionKey.GetSubKeyNames())
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name = (string)subKey.GetValue("Version", "");
if (!string.IsNullOrEmpty(name))
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if (string.IsNullOrEmpty(install)) //No install info; it must be later.
WriteVersion(name);
else
if (!(string.IsNullOrEmpty(sp)) && install == "1")
WriteVersion(name, sp);
else if (install == "1")
WriteVersion(name);
private static void Get45PlusFromRegistry()
const string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\";
using (RegistryKey ndpKey = Registry.LocalMachine.OpenSubKey(subkey))
if (ndpKey == null)
return;
//First check if there's an specific version indicated
if (ndpKey.GetValue("Version") != null)
WriteVersion(ndpKey.GetValue("Version").ToString());
else
if (ndpKey != null && ndpKey.GetValue("Release") != null)
WriteVersion(
CheckFor45PlusVersion(
(int)ndpKey.GetValue("Release")
)
);
// Checking the version using >= enables forward compatibility.
string CheckFor45PlusVersion(int releaseKey)
if (releaseKey >= 528040)
return "4.8";
if (releaseKey >= 461808)
return "4.7.2";
if (releaseKey >= 461308)
return "4.7.1";
if (releaseKey >= 460798)
return "4.7";
if (releaseKey >= 394802)
return "4.6.2";
if (releaseKey >= 394254)
return "4.6.1";
if (releaseKey >= 393295)
return "4.6";
if (releaseKey >= 379893)
return "4.5.2";
if (releaseKey >= 378675)
return "4.5.1";
if (releaseKey >= 378389)
return "4.5";
// This code should never execute. A non-null release key should mean
// that 4.5 or later is installed.
return "";
示例输出，
Currently installed "classic" .NET Versions in the system:
2.0.50727.4927 Service Pack 2
3.0.30729.4926 Service Pack 2
3.5.30729.4926 Service Pack 1
4.0.0.0
4.8.03761
.NET SDK (reflecting any global.json):
Version: 5.0.102
Commit: 71365b4d42
Runtime Environment:
OS Name: Windows
OS Version: 10.0.17134
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\5.0.102\
Host (useful for support):
Version: 5.0.2
Commit: cb5f173b96
.NET SDKs installed:
1.1.10 [C:\Program Files\dotnet\sdk]
2.1.202 [C:\Program Files\dotnet\sdk]
2.1.402 [C:\Program Files\dotnet\sdk]
2.1.518 [C:\Program Files\dotnet\sdk]
3.0.100 [C:\Program Files\dotnet\sdk]
5.0.102 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.22 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.22 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 1.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 1.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.22 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.11 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download
【讨论】：
【参考方案23】：试试这个：
string GetFrameWorkVersion()
return System.Runtime.InteropServices.RuntimeEnvironment.GetSystemVersion();
【讨论】：
这是给2.0，即使它与3.5一起运行
RuntimeEnvironment.GetSystemVersion() 似乎返回的是 CLR 版本，而不是 .NET 版本。 MSDN Page以上是关于有没有一种简单的方法来检查 .NET Framework 版本？的主要内容，如果未能解决你的问题，请参考以下文章
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