C# Asp.Net操作XML文件：增删改节点信息实战技巧
<h1>C# Asp.Net操作XML文件：增删改节点信息实战技巧</h1>
<p>C#、Asp.Net中对XML文件进行操作，增、删、改XMl文件里面节点信息</p>
public class XmlHelper
{
#region <b>增、删、改操作</b>==============================================
/// <summary>
/// 追加节点
/// </summary>
/// <param name="filePath">XML文档绝对路径</param>
/// <param name="xPath">范例: @ Skill/First/SkillItem</param>
/// <param name="xmlNode">XmlNode节点</param>
/// <returns></returns>
public static bool AppendChild(string filePath, string xPath, XmlNode xmlNode)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(filePath);
XmlNode xn = doc.SelectSingleNode(xPath);
XmlNode n = doc.ImportNode(xmlNode, true);
xn.AppendChild(n);
doc.Save(filePath);
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 从XML文档中读取节点追加到另一个XML文档中
/// </summary>
/// <param name="filePath">需要读取的XML文档绝对路径</param>
/// <param name="xPath">范例: @ Skill/First/SkillItem</param>
/// <param name="toFilePath">被追加节点的XML文档绝对路径</param>
/// <param name="toXPath">范例: @ Skill/First/SkillItem</param>
/// <returns></returns>
public static bool AppendChild(string filePath, string xPath, string toFilePath, string toXPath)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(toFilePath);
XmlNode xn = doc.SelectSingleNode(toXPath);
XmlNodeList xnList = ReadNodes(filePath, xPath);
if (xnList != null)
{
foreach (XmlElement xe in xnList)
{
XmlNode n = doc.ImportNode(xe, true);
xn.AppendChild(n);
}
doc.Save(toFilePath);
}
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 修改节点的InnerText的值
/// </summary>
/// <param name="filePath">XML文件绝对路径</param>
/// <param name="xPath">范例: @ Skill/First/SkillItem</param>
/// <param name="value">节点的值</param>
/// <returns></returns>
public static bool UpdateNodeInnerText(string filePath, string xPath, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(filePath);
XmlNode xn = doc.SelectSingleNode(xPath);
XmlElement xe = (XmlElement)xn;
xe.InnerText = value;
doc.Save(filePath);
}
catch
{
return false;
}
return true;
}
/// <summary>
/// 读取XML文档
/// </summary>
/// <param name="filePath">XML文件绝对路径</param>
/// <returns></returns>
public static XmlDocument LoadXmlDoc(string filePath)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(filePath);
return doc;
}
catch
{
return null;
}
}
#endregion <b>增、删、改操作</b>
#region <b>扩展方法</b>===================================================
/// <summary>
/// 读取XML的所有子节点
/// </summary>
/// <param name="filePath">XML文件绝对路径</param>
/// <param name="xPath">范例: @ Skill/First/SkillItem</param>
/// <returns></returns>
public static XmlNodeList ReadNodes(string filePath, string xPath)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(filePath);
XmlNode xn = doc.SelectSingleNode(xPath);
XmlNodeList xnList = xn.ChildNodes; //得到该节点的子节点
return xnList;
}
catch
{
return null;
}
}
#endregion <b>扩展方法</b>
}
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