HttpUtility.HtmlEncode用来防止站点受到恶意脚本注入的攻击
public string Welcome(string name, int numTimes = 1) { return HttpUtility.HtmlEncode("Hello " + name + ", NumTimes is: " + numTimes);}
HttpUtility.HtmlEncode
原文：http://www.cnblogs.com/ssef/p/3959212.html
