public static string SelectClassTableImg(UserRequest userrequest) { string path = root + BufferSubdirectory.ClassTable + "/" + userrequest.FromUserName; if (System.IO.File.Exists(path)) { ClassTableDrawer drawer = new ClassTableDrawer(); Stream stream = drawer.DrawClassTableInStream(userrequest.FromUserName); WeChatHttpHelper.GetToken(); return(userrequest.Get_Img(WeChatHttpHelper.GetMediaID(stream))); } else { return(userrequest.Get_Reply(isnotexist(userrequest.FromUserName))); } }