public partial class MPVerify : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {        var echostr = Request.QueryString["echostr"].ToString();        if (Verify())        {            Response.Write(echostr);            Response.End();        }        else        {                        Response.End();        }    }    private bool Verify()    {        var signature = Request.QueryString["signature"].ToString();        var timestamp = Request.QueryString["timestamp"].ToString();        var nonce = Request.QueryString["nonce"].ToString();        var token = "yy2056";        string[] ArrTmp = { token, timestamp, nonce };        Array.Sort(ArrTmp);     //字典排序        string tmpStr = string.Join("", ArrTmp);        tmpStr = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");        tmpStr = tmpStr.ToLower();        if (tmpStr == signature)        {            return true;        }        else        {            return false;        }    }}