private void btnAddExisting_Click(object sender, EventArgs e)
        {
            var frmSelect = new frmVehicleSelect(_declerationID);
            frmSelect.OnSelectedVehichle += new frmVehicleSelect.OnSelectedVehicleHandler(frmSelect_OnSelectedVehichle);
            frmSelect.Show();

        }
 private void btnAddExisting_Click(object sender, EventArgs e)
 {
     //neu la khai bao nhap canh, thi them tu phuong tien da xuat canh hoặc xe TQ
     if (_declerationType.Equals(Common.DeclerationType.Import))
     {
         var frmSelect = new frmVehicleSelect(_declerationID);
         frmSelect.OnSelectedVehichle += new frmVehicleSelect.OnSelectedVehicleHandler(frmSelect_OnSelectedVehichle);
         frmSelect.Show(this);
     }
     else //neu la khai bao xuat canh thi them tu phuont tien trong bai xuat
     {
         //var frmSelectExport = new FrmAddSelectVehichleFromExportPark(_declerationID);
         //frmSelectExport.OnSelectedVehichle += new FrmAddSelectVehichleFromExportPark.OnSelectedVehicleHandler(frmSelect_OnSelectedVehichle);
         //frmSelectExport.Show(this);
     }
 }