C#中HTML字符转换函数分享

///<summary>
///替换html中的特殊字符
///</summary>
///<paramname="theString">需要进行替换的文本。</param>
///<returns>替换完的文本。</returns>
public static string HtmlEncode(string theString)
{
theString=theString.Replace(">","&gt;");
theString=theString.Replace("<","&lt;");
theString=theString.Replace(" ","&nbsp;");
theString=theString.Replace("\"","&quot;");
theString = theString.Replace("\'", "&#39;");
theString=theString.Replace("\n","<br/>");
return theString;
}

///<summary>
///恢复html中的特殊字符
///</summary>
///<paramname="theString">需要恢复的文本。</param>
///<returns>恢复好的文本。</returns>
public static string HtmlDiscode(string theString)
{
theString=theString.Replace("&gt;",">");
theString=theString.Replace("&lt;","<");
theString=theString.Replace("&nbsp;"," ");
theString=theString.Replace("&quot;","\"");
theString = theString.Replace("&#39;", "\'");
theString=theString.Replace("<br/>","\n");
return theString;
}