从转换为void返回委托的匿名函数返回
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我正在努力返回用户关注的当前Active Directory的确切路径然后我找到了一些代码,虽然它们似乎都没有正常工作并且有bug。但是这段代码似乎有用...无论如何我想返回上面提到的路径(在这段代码中称为currDirectory
;当我在此代码中将void类型更改为字符串类型并使用return currDirectory
时,我收到错误
从匿名函数返回转换为void返回委托不能返回值
任何人都可以更改此代码,以便它可以将currDirectory
作为字符串返回吗?
class Class2
{
public static void Main()
{
RefreshWindow();
}
public static string RefreshWindow()
{
Guid CLSID_ShellApplication = new Guid("13709620-C279-11CE-A49E-444553540000");
Type shellApplicationType = Type.GetTypeFromCLSID(CLSID_ShellApplication, true);
object shellApplication = Activator.CreateInstance(shellApplicationType);
object windows = shellApplicationType.InvokeMember("Windows", System.Reflection.BindingFlags.InvokeMethod, null, shellApplication, new object[] { });
Type windowsType = windows.GetType();
object count = windowsType.InvokeMember("Count", System.Reflection.BindingFlags.GetProperty, null, windows, null);
Parallel.For(0, (int)count, i =>
{
object item = windowsType.InvokeMember("Item", System.Reflection.BindingFlags.InvokeMethod, null, windows, new object[] { i });
Type itemType = item.GetType();
string itemName = (string)itemType.InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, item, null);
if (itemName == "Windows Explorer" || itemName == "File Explorer")
{
string currDirectory = HttpUtility.htmlEncode((string)itemType.InvokeMember("LocationURL", System.Reflection.BindingFlags.GetProperty, null, item, null)).Replace("///", @"").Replace("/", @"").Replace("%20", " ").Replace(@"file:", "");
Console.WriteLine(currDirectory);
Console.Read();
return currDirectory;
}
});
}
}
答案
您的代码不会返回单个路径,它将返回所有打开的Windows资源管理器实例,因此如果您打开多个,将返回所有内容,无论如何看看下面的解决方案,它应该可以解决您的问题。
public static string[] RefreshWindow()
{
Guid CLSID_ShellApplication = new Guid("13709620-C279-11CE-A49E-444553540000");
Type shellApplicationType = Type.GetTypeFromCLSID(CLSID_ShellApplication, true);
object shellApplication = Activator.CreateInstance(shellApplicationType);
object windows = shellApplicationType.InvokeMember("Windows", System.Reflection.BindingFlags.InvokeMethod, null, shellApplication, new object[] { });
Type windowsType = windows.GetType();
var count = (int)windowsType.InvokeMember("Count", System.Reflection.BindingFlags.GetProperty, null, windows, null);
string[] currentDirectories = new string[count];
Parallel.For(0, count, i =>
{
object item = windowsType.InvokeMember("Item", System.Reflection.BindingFlags.InvokeMethod, null, windows, new object[] { i });
Type itemType = item.GetType();
string itemName = (string)itemType.InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, item, null);
if (itemName == "Windows Explorer" || itemName == "File Explorer")
{
string currDirectory = HttpUtility.HtmlEncode((string)itemType.InvokeMember("LocationURL", System.Reflection.BindingFlags.GetProperty, null, item, null)).Replace("///", @"").Replace("/", @"").Replace("%20", " ").Replace(@"file:", "");
currentDirectories[i] = currDirectory;
}
});
return currentDirectories;
}
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