获得接口错误信息

  public static string GetInterfaceErrorstring(string errCode)//获得接口错误信息

{

          System.Text.StringBuilder sb = new   System.Text.StringBuilder ();

          sb.Append("<?xml version='1.0' encoding='gb2312' ?>");

          sb.Append("<Root>");

          sb.Append("<Result> <Return_result>"+errCode+"</Return_result></Result>");    

          sb.Append("</Root>");

          return sb.Tostring();
}