如何在 C# 中从数据表生成 XML
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【中文标题】如何在 C# 中从数据表生成 XML【英文标题】：How to generate XML from datatable in c# 【发布时间】：2020-01-16 09:37:51 【问题描述】：我有一个来自数据库的数据表，其中包含如下数据
ID NAME SERVICE SITENAME NODENAME
27883481 EAGLE HILLS PROPERTIES MANAGED WAN CAPITAL GATE-ADNEC LEANING TOWER capitalgatetwrill-ra
27883481 EAGLE HILLS PROPERTIES MANAGED WAN 2020 BLDG dxbcontactcentreill-rb
27883481 EAGLE HILLS PROPERTIES MANAGED WAN 2020 BLDG dxbcontactcentreill-ra
27883481 EAGLE HILLS PROPERTIES MANAGED WAN CAPITAL GATE-ADNEC LEANING TOWER capitalgatetwrill-rb
27883481 EAGLE HILLS PROPERTIES MANAGED LAN CAPITAL GATE-ADNEC LEANING TOWER capitalgatetwrill-ra
27883481 EAGLE HILLS PROPERTIES MANAGED LAN 2020 BLDG dxbcontactcentreill-rb
27883481 EAGLE HILLS PROPERTIES MANAGED LAN 2020 BLDG dxbcontactcentreill-ra
27883481 EAGLE HILLS PROPERTIES MANAGED LAN CAPITAL GATE-ADNEC LEANING TOWER capitalgatetwrill-rb
27883 EAGLE DRILLS PROPERTIES MANAGED WAN CAPITAL GATE-ADNEC LEANING TOWER capitalgatetwrill-ra
27883 EAGLE DRILLS PROPERTIES MANAGED WAN 2020 BLDG dxbcontactcentreill-rb
27883 EAGLE DRILLS PROPERTIES MANAGED WAN 2020 BLDG dxbcontactcentreill-ra
27883 EAGLE DRILLS PROPERTIES MANAGED WAN CAPITAL GATE-ADNEC LEANING TOWER capitalgatetwrill-rb
我想从上面的数据创建 XMl，如下所示，它是 XML 的原型
<?xml version="1.0" encoding="utf-8" ?>
<AllSites>
<SITE_NODES>
<ID>27883481</ID>
<NAME>EAGLE HILLS PROPERTIES""</NAME>
<PARTY_SERVICES>
<SERVICE_NAME>MANAGED WAN</SERVICE_NAME>
<SERVICE_SITES>
<SITE_NAME>CAPITAL GATE-ADNEC LEANING TOWER</SITE_NAME>
<SITE_NODES>
<NODE_NAME>capitalgatetwrill-ra</NODE_NAME>
<NODE_NAME>capitalgatetwrill-rb</NODE_NAME>
</SITE_NODES>
</SERVICE_SITES>
<SERVICE_SITES>
<SITE_NAME>2020 BLDG</SITE_NAME>
<SITE_NODES>
<NODE_NAME>dxbcontactcentreill-rb</NODE_NAME>
<NODE_NAME>dxbcontactcentreill-ra</NODE_NAME>
</SITE_NODES>
</SERVICE_SITES>
</PARTY_SERVICES>
<PARTY_SERVICES>
<SERVICE_NAME>MANAGED LAN</SERVICE_NAME>
<SERVICE_SITES>
<SITE_NAME>CAPITAL GATE-ADNEC LEANING TOWER</SITE_NAME>
<SITE_NODES>
<NODE_NAME>abcd-ra</NODE_NAME>
<NODE_NAME>abcd-rb</NODE_NAME>
</SITE_NODES>
</SERVICE_SITES>
<SERVICE_SITES>
<SITE_NAME>2021 BLDG</SITE_NAME>
<SITE_NODES>
<NODE_NAME>pqms-rb</NODE_NAME>
<NODE_NAME>pqms-ra</NODE_NAME>
</SITE_NODES>
</SERVICE_SITES>
</PARTY_SERVICES>
</SITE_NODES>
</AllSites>
如何生成它？我是否需要创建一个带有占位符的 XML 模板，应该替换运行时？或创建 c# 类并生成它 如下
public class DetailsBO
public string ID get; set;
public string NAME get; set;
public string SERVICE get; set;
public List<SitesBO> sites get; set;
public class SitesBO
public string SITENAME get; set;
public List<NodesBO> noodes get; set;
public class NodesBO
public string NODENAME get; set;
谁能给我c#代码
编辑
假设如果站点名称为空或为空，则所有服务类型都将变为与 WAN 或 LAN 相同的服务类型
DataTable dt = new DataTable();
dt.Columns.Add("ID", typeof(string));
dt.Columns.Add("NAME", typeof(string));
dt.Columns.Add("SERVICE", typeof(string));
dt.Columns.Add("SITENAME", typeof(string));
dt.Columns.Add("NODENAME", typeof(string));
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "", "capitalgatetwrill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-rb" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-rb" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "2020 BLDG", "dxbcontactcentreill-rb" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "2020 BLDG", "dxbcontactcentreill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-rb" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-ra" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-rb" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-ra" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-rb" );
【问题讨论】：
这是 NOT 类似“gimme-ze-codes”的网站 - 以您的声誉，您应该知道这一点。到目前为止，您 尝试过什么？你被困在哪里了？我们会帮助 - 但我们不会只是给你整个代码..... 【参考方案1】：最少的代码是把当前的数据表直接输出到xml。您可以修改代码以使用将创建类和序列化类的实体。但是因为你已经有了数据表，所以我只是拿了表并直接制作了 xml。看起来您删除了重复项，所以我也这样做了。我还订购了结果。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
class Program
const string FILENAME = @"c:\temp\test.xml";
static void Main(string[] args)
DataTable dt = new DataTable();
dt.Columns.Add("ID", typeof(string));
dt.Columns.Add("NAME", typeof(string));
dt.Columns.Add("SERVICE", typeof(string));
dt.Columns.Add("SITENAME", typeof(string));
dt.Columns.Add("NODENAME", typeof(string));
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-rb" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-rb" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "2020 BLDG", "dxbcontactcentreill-rb" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "2020 BLDG", "dxbcontactcentreill-ra" );
dt.Rows.Add(new object[] "27883481", "EAGLE HILLS PROPERTIES", "MANAGED LAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-rb" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-ra" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-rb" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "2020 BLDG", "dxbcontactcentreill-ra" );
dt.Rows.Add(new object[] "27883", "EAGLE DRILLS PROPERTIES", "MANAGED WAN", "CAPITAL GATE-ADNEC LEANING TOWER", "capitalgatetwrill-rb" );
dt = dt.AsEnumerable()
.OrderBy(x => x.Field<string>("ID"))
.ThenBy(x => x.Field<string>("NAME"))
.ThenBy(x => x.Field<string>("SERVICE"))
.ThenBy(x => x.Field<string>("SITENAME"))
.ThenBy(x => x.Field<string>("NODENAME"))
.CopyToDataTable();
string xml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?><AllSites></AllSites>";
XDocument doc = XDocument.Parse(xml);
XElement allSites = doc.Root;
foreach (var idGroup in dt.AsEnumerable().GroupBy(x => x.Field<string>("ID")))
XElement siteNode = new XElement("SITE_NODE");
allSites.Add(siteNode);
siteNode.Add(new XElement("ID", idGroup.Key));
siteNode.Add(new XElement("NAME", idGroup.First().Field<string>("NAME")));
XElement partyServices = new XElement("PARTY_SERVICES");
siteNode.Add(partyServices);
partyServices.Add(new XElement("SERVICE_NAME", idGroup.First().Field<string>("SERVICE")));
foreach (var serviceSite in idGroup.GroupBy(x => x.Field<string>("SITENAME")))
XElement serviceSites = new XElement("SERVICE_SITES");
partyServices.Add(serviceSites);
serviceSites.Add(new XElement("SITE_NAME", serviceSite.Key));
XElement siteNodes = new XElement("SITE_NODES");
serviceSites.Add(siteNodes);
string[] nodeNames = serviceSite.Select(x => x.Field<string>("NODENAME")).Distinct().ToArray();
foreach (string nodeName in nodeNames)
siteNodes.Add(new XElement("NODE_NAME", nodeName));
doc.Save(FILENAME);
【讨论】：
不同之处在于您删除了重复项。所以我添加了代码来排序和删除重复项。 我需要查看代码和确切的错误。不知道你在做什么。 如果 SITE_NAME 为空那么它混合了 WAN 和 LAN 的情况，因为 serviceSite.Key 是空白的。如何避免它？我们需要写 where 子句 如果您从数据库中获取数据，则错误在数据库中。您将数据插入数据库的方法是错误的。您需要更正数据库。以上是关于如何在 C# 中从数据表生成 XML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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