//Visual C#
'引用System.Collections.Specialized和System.Text命名空间
string stringValue;
NameValueCollection gb2312Requests;
gb2312Requests = HttpUtility.ParseQueryString(Request.Url.Query, Encoding.GetEncoding("GB2312"))
Response.Write(gb2312Requests["string"]); //'里面的string就是你提交的参数的Key