百度搜索中关键字的编码方法和解码方法http://community.csdn.net/Expert/TopicView3.asp?id=5744800
百度的编码:str=System.Web.HttpUtility.UrlEncode("中文",System.Text.UnicodeEncoding.GetEncoding("GB2312")).ToUpper()解码System.Web.HttpUtility.UrlDecode("%C3%CF%CF%DC%BB%E1",System.Text.UnicodeEncoding.GetEncod