private void deleteButton_Click(object sender, EventArgs e)
 {
     if (tableIdTextBox.Text == "")
     {
         MessageBox.Show("Please Enter table Id");
     }
     else
     {
         BookingTableService bookingTableService = new BookingTableService();
         int result = bookingTableService.DeleteTable(id);
         if (result > 0)
         {
             MessageBox.Show("Delete table Successfully");
             tableIdTextBox.Text = "";
             this.Refreash(this, null);
         }
         else
         {
             MessageBox.Show("Table not delete");
         }
     }
 }
        void Refreash(object sender, EventArgs e)
        {
            BookingTableService bookingTableService = new BookingTableService();

            deleteDataGridView.DataSource = bookingTableService.GetAllTable();
        }
        private void DeleteBookingTable_Load(object sender, EventArgs e)
        {
            BookingTableService bookingTableService = new BookingTableService();

            deleteDataGridView.DataSource = bookingTableService.GetAllTable();
        }