private void 导出平均年龄ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            try
            {
                DataTable dt = new DataTable();

                if (!m_personnerServer.ExcelPersonAge(out dt, out error))
                {
                    MessageDialog.ShowPromptMessage(error);
                    return;
                }
                else
                {
                    string[] columns = { };
                    ExcelHelperP.DataTableToExcel(saveFileDialog1, dt, columns);
                }
            }
            catch (Exception ex)
            {
                MessageDialog.ShowPromptMessage(ex.Message);
            }
        }