C# 操作XML

#region 循环读取XML里的内容
/// <summary>
/// 循环读取XML里的内容
/// Node.HasChildNodes 判断是否有节点
/// </summary>
private void XMLopertator(string types)
{
string lujin = Application["lujin"] + "/XMLTest/XMLturba.xml";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath(lujin));
XmlNodeList Node_List = xmlDoc.SelectSingleNode("turba").ChildNodes;
//获取turba节点的所有子节点
foreach (XmlNode Node in Node_List)
{
XmlElement xnl = (XmlElement)Node;

if (xnl.GetAttribute("txid") == types)
{
TelList.SelectedValue = types;//下拉框控件赋予默认值
if (xnl.GetAttribute("txnr") != "" || xnl.GetAttribute("txnr") != null)
{
txtel.Text = xnl.GetAttribute("txnr");
//XmlElement类中GetAttribute方法取属性值
}
else
{
txtel.Text = "";
}
break;//找到跳出循环
}
}
}
#endregion 循环读取XML里的内容
#region XML文件操作添加节点
/// <summary>
/// /// <param name="MainNode">当前节点</param>
/// /// <param name="node">新节点</param>
/// <param name="content">新节点值</param>
/// </summary>38
private void XMLAddElement(string types, string txtstr)
{
string lujin = Application["lujin"] + "/XMLTest/XMLturba.xml";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath(lujin));
//创建根节点

XmlElement MyCustomers = xmlDoc.CreateElement("peioinfo");

xmlDoc.AppendChild(MyCustomers);
XmlNode MainNode = xmlDoc.SelectSingleNode("turba");
//添加子节点50
XmlElement tongxun = xmlDoc.CreateElement("tongxun");
//添加tongxun子节点及属性51
tongxun.SetAttribute("txid", types);
tongxun.SetAttribute("txnr", txtstr);
MainNode.AppendChild(tongxun);
//保存XML文档55
xmlDoc.Save(Server.MapPath(lujin));
}
#endregion XML文件操作添加节点
#region XML文件操作修改节点
private void XMLEditElement(string types, string txtstr)
{
string lujin = Application["lujin"] + "/XMLTest/XMLturba.xml";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath(lujin));
XmlNodeList xnl = xmlDoc.SelectSingleNode("turba").ChildNodes;
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
if (xe.GetAttribute("txid") == types)//如果节点存在则改写
{
xe.SetAttribute("txnr", txtstr);
break;
}
}
xmlDoc.Save(Server.MapPath(lujin));
}
#endregion XML文件操作添加节点
#region XML文件操作删除节点
private void XMLDelElement(string types)
{
string lujin = Application["lujin"] + "/XMLTest/XMLturba.xml";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath(lujin));
XmlNodeList xnl = xmlDoc.SelectSingleNode("turba").ChildNodes;
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
if (xe.GetAttribute("txid") == types)//如果节点存在则改写
{
xe.RemoveAll();
break;
}
}
xmlDoc.Save(Server.MapPath(lujin));
}
#endregion XML文件操作删除节点