读取和更新xml文件 (asp.net C#)

1 示例xml文件 model.xml

<?xml version="1.0" encoding="utf-8" ?>

<DrRoot>

<SiteName>xml操作示例</SiteName>

<SiteUrl>www.abc.com.cn</SiteUrl>

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<SiteKeyWord>xml操作示例</SiteKeyWord>

<FileType>gif|jpg|rar</FileType>

<FileSize>1024</FileSize>

<Filters>script|iframe</Filters>

<FilterEvent>onload|onmouseover</FilterEvent>

<BadWords>admin|webmaster|drbbs</BadWords>

<DisallowIP>0.0.0.0</DisallowIP>

<IsCloseReg>False</IsCloseReg>

<IsCloseBBS>False</IsCloseBBS>

<PostPay>5</PostPay>

<ReplyPay>2</ReplyPay>

<GoodPay>10</GoodPay>

<DelPost>5</DelPost>

<DelReply>2</DelReply>

<CancleGood>10</CancleGood>

</DrRoot>

2 主要方法

public string ReadValue(string key)

{

XmlDocument xd=new XmlDocument();

xd.Load(Server.MapPath("model.xml"));

XmlNodeList xnl = xd.GetElementsByTagName(key);

if(xnl.Count==0)

return "";

else

{

XmlNode mNode=xnl[0];

return mNode.InnerText;

}

}

public void UpdateValue(string nKey,string nValue)

{

if(ReadValue(nKey)!="")

{

XmlDocument xmlDoc=new XmlDocument();

xmlDoc.Load(Server.MapPath("model.xml"));

XmlNodeList elemList = xmlDoc.GetElementsByTagName(nKey);

XmlNode mNode=elemList[0];

mNode.InnerText=nValue;

XmlTextWriter xw = new XmlTextWriter(new StreamWriter(Server.MapPath("model.xml")));

xw.Formatting = Formatting.Indented;

xmlDoc.WriteTo(xw);

xw.Close();

}

}