LinqToXML添加 XML元素及修改属性值

最新推荐文章于 2019-03-11 09:38:22 发布

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最新推荐文章于 2019-03-11 09:38:22 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/hahacjh/archive/2010/03/11/1683765.html

本文介绍了一个基于XML文件的用户数据管理系统。该系统可以创建新用户并记录用户的注册时间及等级等信息；同时支持更新用户的等级分数及使用时间等功能。

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代码

public DataSettingWebService()
{
this.fileName =this.Server .MapPath(@"/ClientBin/ServerData/UserMessage.xml");
this.doc = new XmlDocument();
this.doc.Load(fileName);
}

添加元素

代码

public bool CreateNewUser(string userName,string passWorld)
{
try{
if (userName == "" || passWorld == "")
{
return false;
}
XmlElement root = doc.DocumentElement;

XmlElement newUser = doc.CreateElement("User");

newUser.SetAttribute("username", userName);
newUser.SetAttribute("passworld", passWorld);
newUser.SetAttribute("abilitylevel", "0");
newUser.SetAttribute("registertime", DateTime.Now.ToString());

for (int i = 1; i <= 5; i++)
{
XmlElement newLevel = doc.CreateElement("Level");
newLevel.SetAttribute("id", i.ToString());
newLevel.SetAttribute("score", "0");
newLevel.SetAttribute("usetime", "0");
newLevel.SetAttribute("clicknum", "0");
newLevel.SetAttribute("playtime", "0");
newUser.AppendChild(newLevel);

}

root.AppendChild(newUser);
doc.Save(fileName);
return true ;
}
catch
{
return false ;
}
}

修改更新属性值

代码

public bool UpdateUserGrade(string userName, int score, string useTime, string clickNum, int levelId)
{

bool IsAbilityLevelChange = false;

XmlNodeList nodelist = doc.GetElementsByTagName("User");

foreach (XmlNode xdu in nodelist)
{
if (xdu.Attributes["username"].Value == userName)
{

XmlElement xeu = xdu as XmlElement;
if (levelId > Convert.ToInt32(xeu.Attributes["abilitylevel"].Value))
{
xeu.SetAttribute("abilitylevel", levelId.ToString());
IsAbilityLevelChange = true;
}
nodelist = xeu.GetElementsByTagName("Level");
foreach (XmlNode xdl in nodelist)
{
if (xdl.Attributes["id"].Value == levelId.ToString())
{
if (score > Convert.ToInt32(xdl.Attributes["score"].Value))
{
XmlElement xel = xdl as XmlElement;
xel.SetAttribute("score", score.ToString());
xel.SetAttribute("usetime", useTime);
xel.SetAttribute("clicknum", clickNum);
xel.SetAttribute("playtime", DateTime.Now.ToString());
}

break;
}

}
break;
}

}
doc.Save(fileName);
return IsAbilityLevelChange;
}

转载于:https://www.cnblogs.com/hahacjh/archive/2010/03/11/1683765.html