// 讀取xml檔案到DataTable
            string filepath = Application.StartupPath + @"\Previous Competitions\PreviousCompetitions.xml";
            if (!File.Exists(filepath))
            {
                MessageBox.Show("File is not exist!");
                return;
            }
            try
            {
                DataSet ds = new DataSet();
                ds.ReadXml(filepath);
                this.dataGridView1.DataSource = ds.Tables[0];
            }
            catch (Exception ex)
            {
                MessageBox.Show("Loaddata Filed!Message:"+ex.Message.ToString());
                return;
            }