Web Forms :: Unable To Receive Activation Code On Activation Page

The activation code is not receiving here

4 hours, 23 minutes ago|LINK

if (String.IsNullOrEmpty(Request.Params["ActivationID"])){Response.Redirect("index.html");}else{try{con.Open();string hash = Request.Params["ActivationID"];Response.Write(hash);con.Open();cmd = new SqlCommand("update userdetails set status=1 where hashid='" + hash + "'", con);cmd.ExecuteNonQuery();con.Close();Response.Write("Your account has been successfully activated. You can now login using the username and password you chose during the registration. ");

} catch{Response.Redirect("index.html");}}

But the values is passing to here [URL] .... but not working the above code