private void BtnNew_Click(object sender, EventArgs e)
 {
     dateTimePicker1.Value = System.DateTime.Today;
     TxtOrder.Clear();
     TxtCustomer.Clear();
     TxtPhone.Clear();
     ComboItem.SelectedIndex = -1;
     TxtPrice.Clear();
     TxtQty.Clear();
     TxtTotal.Clear();
     TxtOrder.Focus();
 }
 public GiftShop()
 {
     InitializeComponent();
     FillCombo();
     TxtOrder.Focus();
 }