public JsonResult GetRegisteredUsers() { Dictionary <string, object> result_config = new Dictionary <string, object>(); DataTable dtUsers = user_model.GetRegisteredUsers(); var data = custom_helper.DataTableToJson(dtUsers); result_config.Add("data", data); //prepare column config var cols = new List <string>(); foreach (DataColumn column in dtUsers.Columns) { cols.Add(column.ColumnName); } Dictionary <string, object> cols_arr = custom_helper.PrepareStaticColumns(cols); result_config.Add("column_config", custom_helper.PrepareColumns(cols_arr)); response.Add("success", true); response.Add("error", false); response.Add("message", result_config); return(Json(response, JsonRequestBehavior.AllowGet)); }