private void SaveData(LoadOperation<ma_diaban> lo)
        {

            if (lo.Entities.Count() > 0)
            {
                MessageBox.Show("Mã tuyến " + this.txtmanv.Text.Trim().ToUpper() + " đã tồn tại");
            }
            else
            {

                if (txtmanv.Text.Trim() != "" || txtten.Text.Trim() != "")
                {
                    ma_diaban ap = new ma_diaban
                    {
                       ma_tuyen = txtmanv.Text.Trim().ToUpper(),
                       ten_tuyen = this.txtten.Text.Trim(),
                       ma_huyen=App.ma_huyen,
                       kt=checkEdit1.IsChecked                       
                    };
                    dstb.ma_diabans.Add(ap);
                    dstb.SubmitChanges(OnSubmitCompleted, true);
                }
                else
                    MessageBox.Show("Nhập chưa đủ thông tin hoặc sai qui cách nhập mã tuyến !");
            }
        }
 /// <summary>
 /// Create a new ma_diaban object.
 /// </summary>
 /// <param name="ma_tuyen">Initial value of the ma_tuyen property.</param>
 public static ma_diaban Createma_diaban(global::System.String ma_tuyen)
 {
     ma_diaban ma_diaban = new ma_diaban();
     ma_diaban.ma_tuyen = ma_tuyen;
     return ma_diaban;
 }
 /// <summary>
 /// Deprecated Method for adding a new object to the ma_diaban EntitySet. Consider using the .Add method of the associated ObjectSet&lt;T&gt; property instead.
 /// </summary>
 public void AddToma_diaban(ma_diaban ma_diaban)
 {
     base.AddObject("ma_diaban", ma_diaban);
 }