///summary>
///替換html中的特殊字符
////summary>
///paramname="theString">需要進行替換的文本。/param>
///returns>替換完的文本。/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>
///恢復html中的特殊字符
////summary>
///paramname="theString">需要恢復的文本。/param>
///returns>恢復好的文本。/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;
}