用C#将数据库的数据导出，结果生成的txt是空的，求大神看一下代码哪里不对？

Question

private void button1_Click(object sender, EventArgs e)
{

        FileDialog sfd = new SaveFileDialog();

      if (sfd.ShowDialog() == DialogResult.OK)
        {
            using (FileStream fstream = File.OpenWrite(sfd.FileName))
            {
                StreamWriter sw = new StreamWriter(fstream, System.Text.Encoding.GetEncoding("GB2312"));

                using (SqlConnection conn = new SqlConnection("Data Source=(local);Initial Catalog=PhoneBook;Integrated Security=SSPI"))
                {
                    conn.Open();
                    using (SqlCommand cmd = conn.CreateCommand())
                    {
                        cmd.CommandText = "select * from Phone3";
                        using (SqlDataReader reader = cmd.ExecuteReader())
                        {
                            while (reader.Read())
                            {
                                int id = reader.GetInt32(reader.GetOrdinal("编号"));
                                string users = reader.GetString(reader.GetOrdinal("用户"));
                                string group = reader.GetString(reader.GetOrdinal("分组"));
                                string name = reader.GetString(reader.GetOrdinal("姓名"));
                                string company= reader.GetString(reader.GetOrdinal("工作单位"));
                                string number = reader.GetString(reader.GetOrdinal("联系电话"));
                                string email = reader.GetString(reader.GetOrdinal("电子邮件"));
                                sw.WriteLine(number + "|" + users+"|"+group+"|"+name+"|"+company+"|"+number+"|"+email);

                            }
                            sw.Flush();
                            sw.Close();
                        }
                    }
                    conn.Close();
                }
                MessageBox.Show("数据导出成功！");
            }
        }
    }         
}

}

从端点调试来看好像是 string users = reader.GetString(reader.GetOrdinal("用户")); 这句没有正常执行。求大神们明示啊~

Answer 1

是不是报错了，有错误信息吗