public string err属性

　　  private string _err;
        public string err
        {
            set
            {
                _err = value;
            }
            get
            {
                string v = _err;
                v = v.Replace("\"", "");
                v = v.Replace("\r", "  \ \ r ");  //没有空格
                v = v.Replace("\n", "  \ \ n "); //没有空格                

　　　　　  return v;
            }
        }