private void CancelButton_Click(object sender, EventArgs e)
{
//Code which changes visisbilty of Form.
QuantityValuesTextBox.Focus();
QuantityValuesTextBox.SelectAll();
AddToCartButton.Focus();
DataGridViewPanel.Visible = false;
DataGridCart.Rows.Clear();
TotalCostValueTextBox.Clear();
// Local variable declaraion.
int BeerNameIndexSelected = int.Parse(BeerNamesListBox.SelectedIndex.ToString());
int BeerSizeIndexSelected = int.Parse(BeerSubTypeListBox.SelectedIndex.ToString());
int QuantityEntered = int.Parse(QuantityValuesTextBox.Text);
//Decison construct to check quantity is more than 0.
if (QuantityEntered > 0)
{
//code to reduce the stock added while confirming.
TempStockArray[BeerNameIndexSelected, BeerSizeIndexSelected] = TempStockArray[BeerNameIndexSelected, BeerSizeIndexSelected] + QuantityEntered;
FinalValue = 0;
DataGridCart.Rows.Clear();
QuantityValuesTextBox.Clear();
}
//decison construct to check qunatity is less than 0.
else if (QuantityEntered <= 0)
{
MessageBox.Show("Please input qunatity correctly", "Input quantity box", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void ClearButton_Click(object sender, EventArgs e)
{
// code which clears the selected value and changes visisbility of form.
QuantityValuesTextBox.Focus();
QuantityValuesTextBox.SelectAll();
ButtonPanelOne.Visible = true;
CancelButton.Visible = true;
DataGridViewPanel.Visible = false;
DataGridCart.ClearSelection();
DataGridCart.Rows.Clear();
TotalCostValueTextBox.Text = "0";
FinalValue = 0;
QuantityValuesTextBox.Clear();
ExitButton.Focus();
BeerNamesListBox.SelectedItems.Clear();
BeerSubTypeListBox.SelectedItems.Clear();
PriceForBeerListBox.SelectedItems.Clear();
DataGridCart.Visible = false;
TotalCostValueTextBox.Visible = false;
TotalcostLabel.Visible = false;
DataGridCart.ClearSelection();
DataGridCart.Rows.Clear();
}