private void txtSelectSource_DoubleClick(object sender, EventArgs e)
{
UserInputTextBox.SelectAll();
}
//add to order button event handling
private void AddToOrderButton_Click(object sender, EventArgs e)
{
//declaration
int Identify;
//gets the available stock for the choosen option
AvailableStock = (StockList2DArray[GetMealSizeIndex, GetMealTypeIndex]);
try
{ //tries to parse user input to an integer
UserInputQuantity = int.Parse(UserInputTextBox.Text);
if (UserInputQuantity > 0) //checks if the input is greater than zero
{
//if what the user enters is equal to or less than the avalable stock
if (UserInputQuantity <= AvailableStock)
{
DisplayPrice.Text = (UserInputQuantity * Cost).ToString();
MealTypeChoosen.Add((MealTypeListBox.SelectedItem).ToString());
MealSizeChoosen.Add((MealSizeListBox.SelectedItem).ToString());
QuantityChoosen.Add(UserInputQuantity);
PriceOfChoice.Add(decimal.Parse(DisplayPrice.Text));
RunningTotal += UserInputQuantity * Cost;
TotalPriceLabel.Text = RunningTotal.ToString();
CompleteOrderButton.Enabled = true;
ClearButton.Enabled = true;
//-------------------------------------
for (Identify = MealTypeChoosen.Count - 1; Identify != MealTypeChoosen.Count; Identify++)
{
OrderListBox.Items.Add(MealTypeChoosen.ElementAt(Identify) + "\t" + MealSizeChoosen.ElementAt(Identify) +
"\t" + QuantityChoosen.ElementAt(Identify) + "\t"
+ Cost.ToString() + "\t" + PriceOfChoice.ElementAt(Identify).ToString("C"));
(StockList2DArray[GetMealSizeIndex, GetMealTypeIndex]) = AvailableStock - UserInputQuantity;// this should work else i am in for it
}
//OrderListBox.ClearSelected();
MealTypeListBox.SelectedIndex = -1;
MealSizeListBox.SelectedIndex = -1;
DisplayPrice.Text = "";
UserInputTextBox.Text = "";
}
else// if the user input doesn't meet the above conditions i.e, greater than the available stock
{
MessageBox.Show("the available stock is:" + AvailableStock, "Warning",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
UserInputTextBox.Text = AvailableStock.ToString();
UserInputTextBox.Focus();
UserInputTextBox.SelectAll();
DisplayPrice.Text = "";
}
}
else
{
//if the user input is negative or inavlid
MessageBox.Show("Please enter a valid quantity", "Invalid input",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
UserInputTextBox.Focus();
UserInputTextBox.SelectAll();
}
}
catch //if user input can't be parsed
{
MessageBox.Show("Please enter a quantity greater than 1", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
UserInputTextBox.Focus();
UserInputTextBox.SelectAll();
}
}