ASP.NET读写XML文件的示例代码

public void SetXmlFileValue(string xmlPath,string AppKey,string AppValue)//写xmlPath是文件路径+文件名，AppKey是 Key Name，AppValue是Value

{

XmlDocument xDoc = new XmlDocument();

xDoc.Load(xmlPath);

XmlNode xNode;

XmlElement xElem1;

XmlElement xElem2;

xNode = xDoc.SelectSingleNode("//appSettings");

xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");

if ( xElem1 != null )

{

xElem1.SetAttribute("value",AppValue);

}

else

{

xElem2 = xDoc.CreateElement("add");

xElem2.SetAttribute("key",AppKey);

xElem2.SetAttribute("value",AppValue);

xNode.AppendChild(xElem2);

}

xDoc.Save(xmlPath);

}

public void GetXmlFileValue(string xmlPath,string AppKey,ref string AppValue)//读xmlPath是文件路径+文件名，AppKey是 Key Name，AppValue是Value

{

XmlDocument xDoc = new XmlDocument();

xDoc.Load(xmlPath);

XmlNode xNode;

XmlElement xElem1;

xNode = xDoc.SelectSingleNode("//www.tydsyy.comappSettings");

xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");

if ( xElem1 != null )

{

AppValue=xElem1.GetAttribute ("value");

}

else

{

// MessageBox.Show ("There is not any information!");

}

}

#endregion