#region 生成并返回 json 结果文件/// <summary>/// 生成并返回 json 结果文件/// </summary>/// <param name="json">主内容</param>/// <param name="argus">其它参数</param>/// <param name="flag">标志</param>/// <param name="mess">结果</param>/// <returns></returns>public static string BackJson(string flag, string json, string mess){    StringBuilder strback = new StringBuilder();    strback.Append("{\"flag\":\"" + flag + "\",\"msg\":\"" + mess + "\"");    strback.Append(json);    strback.Append("}");    return strback.ToString();}#endregion