C#读取XML文件

XML文件格式内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<DataSource xmlns="Company">
<Node  UserName="公司1" UserID="G1" LevelID="1" ParentID="" ></Node>
<Node  UserName="公司2" UserID="G2" LevelID="1" ParentID="" ></Node>
<Node  UserName="公司3" UserID="G3" LevelID="1" ParentID="" ></Node>
<Node  UserName="部门1" UserID="B1" LevelID="2" ParentID="G1" ></Node>
<Node  UserName="部门2" UserID="B2" LevelID="2" ParentID="G1" ></Node>
<Node  UserName="部门3" UserID="B3" LevelID="2" ParentID="G2" ></Node>
<Node  UserName="科室1" UserID="K1" LevelID="3" ParentID="B1" ></Node>
<Node  UserName="科室2" UserID="K2" LevelID="3" ParentID="B1" ></Node>
<Node  UserName="科室3" UserID="K3" LevelID="3" ParentID="B3" ></Node>
<Node  UserName="组1" UserID="Z1" LevelID="4" ParentID="K1" ></Node>
<Node  UserName="组2" UserID="Z2" LevelID="4" ParentID="K1" ></Node>
</DataSource>

XML文件中每个Node节点有多个属性（UserName、UserID、LevelID、ParentID），当操作类似此格式的XML文件节点的属性时就可用到XmlNode类的Attributes属性
新建WebForm页面，添加TreeView控件TreeView1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Xml;//添加引用

namespace TestWeb
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
TreeViewBind("", 1);
}
}

/// <summary>
/// 绑定TreeView
/// </summary>
/// <param name="ParentID"></param>
/// <param name="LevelID"></param>
public void TreeViewBind(string ParentID, int LevelID)
{
XmlDocument doc = new XmlDocument();
string xmlUrl = @"E:\Test.xml";
doc.Load(xmlUrl);
XmlNode xmlNode = doc.DocumentElement;
TreeNode treeNode = new TreeNode(xmlNode.Attributes["xmlns"].Value);
foreach (XmlNode xn in xmlNode)
{
if (xn.Attributes["ParentID"].Value == ParentID && xn.Attributes["LevelID"].Value == LevelID.ToString())
{
TreeNode node = new TreeNode();
node.Text = xn.Attributes["UserName"].Value;
node.Value = xn.Attributes["UserID"].Value;
NodeBind(node, xn.Attributes["UserID"].Value, Int32.Parse(xn.Attributes["LevelID"].Value) + 1);
treeNode.ChildNodes.Add(node);
}
}
TreeView1.Nodes.Add(treeNode);
}

/// <summary>
/// 递归绑定
/// </summary>
/// <param name="CurrentNode"></param>
/// <param name="ParentID"></param>
/// <param name="LevelID"></param>
private void NodeBind(TreeNode CurrentNode, string ParentID, int LevelID)
{
XmlDocument doc = new XmlDocument();
string xmlUrl = @"E:\Test.xml";
doc.Load(xmlUrl);
XmlNode xmlNode = doc.DocumentElement;
foreach (XmlNode xn in xmlNode)
{
if (xn.Attributes["ParentID"].Value == ParentID && xn.Attributes["LevelID"].Value == LevelID.ToString())
{
TreeNode childnode = new TreeNode();
childnode.Text = xn.Attributes["UserName"].Value;
childnode.Value = xn.Attributes["UserID"].Value;
NodeBind(childnode, xn.Attributes["UserID"].Value, Int32.Parse(xn.Attributes["LevelID"].Value) + 1);
CurrentNode.ChildNodes.Add(childnode);
}
}
}
}
}

方法二：

linq to xml

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Xml.Linq;//添加引用

namespace TestWeb
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
TreeViewBind("", 1);
}
}

public void TreeViewBind(string ParentOrgCode, int LevelNo)
{
XElement XE = XElement.Load(@"E:\Test.xml");
TreeNode treenode = new TreeNode(XE.Attribute("xmlns").Value);
var query = from xe in XE.Elements()
where xe.Attribute("ParentID").Value == ParentOrgCode && xe.Attribute("LevelID").Value == LevelNo.ToString()
select xe;
foreach (XElement x in query)
{
TreeNode node = new TreeNode();
node.Text = x.Attribute("UserName").Value;
node.Value = x.Attribute("UserID").Value;
NodeBind(node, x.Attribute("UserID").Value, Int32.Parse(x.Attribute("LevelID").Value) + 1);
treenode.ChildNodes.Add(node);

}
TreeView1.Nodes.Add(treenode);
}

/// <summary>
/// 递归绑定
/// </summary>
/// <param name="CurrentNode"></param>
/// <param name="ParentOrgCode"></param>
/// <param name="LevelNo"></param>
private void NodeBind(TreeNode CurrentNode, string ParentOrgCode, int LevelNo)
{
XElement XE = XElement.Load(@"E:\Test.xml");
var query = from xe in XE.Elements()
where xe.Attribute("ParentID").Value == ParentOrgCode && xe.Attribute("LevelID").Value == LevelNo.ToString()
select xe;
foreach (XElement x in query)
{
TreeNode childnode = new TreeNode();
childnode.Text = x.Attribute("UserName").Value;
childnode.Value = x.Attribute("UserID").Value;
NodeBind(childnode, x.Attribute("UserID").Value, Int32.Parse(x.Attribute("LevelID").Value) + 1);
CurrentNode.ChildNodes.Add(childnode);
}
}
}
}