private void SelectionChangedMethod(object sender, SelectionChangedEventArgs e)
{
if ((sender as ComboBox).SelectedItem != null)
{
userUpdate = false;
UserInputTextBox.Text = (sender as ComboBox).SelectedItem.ToString();
UserInputTextBox.CaretIndex = UserInputTextBox.Text.Length;
UserInputTextBox.Focus();
InputCacheComboBox.IsDropDownOpen = false;
userUpdate = true;
}
}
private void KeyDownComboBoxMethod(object sender, KeyEventArgs e)
{
if (e.Key == Key.Escape)
{
UserInputTextBox.Focus();
InputCacheComboBox.IsDropDownOpen = false;
}
else if (e.Key != Key.Up && e.Key != Key.Down && e.Key != Key.Enter)
{
UserInputTextBox.Focus();
}
}
private void ClearFormToolStripMenuItem_Click(object sender, EventArgs e)
{
UserInputTextBox.Clear();
InitialValueLabel.Hide();
InitialUnitsLabel.Hide();
EqualsLabel.Hide();
ResultingUnitsLabel.Hide();
ResultingValueLabel.Hide();
UserInputTextBox.Focus();
}
private void KeyDownMethod(object sender, KeyEventArgs e)
{
if (e.Key == Key.Down)
{
FilterItems(string.Empty);
InputCacheComboBox.IsDropDownOpen = true;
InputCacheComboBox.Focus();
}
else if (e.Key == Key.Escape)
{
UserInputTextBox.Focus();
InputCacheComboBox.IsDropDownOpen = false;
}
}
private void UserInputTextBox_GotFocus(object sender, RoutedEventArgs e)
{
userUpdate = true;
if (!expanded && string.IsNullOrWhiteSpace(UserInputTextBox.Text))
{
FilterItems(UserInputTextBox.Text);
if (suggestList.Count > 0)
{
InputCacheComboBox.IsDropDownOpen = true;
UserInputTextBox.Focus();
expanded = true;
}
}
}
//Shows Converter Menu
private void ShowConverter()
{
//Show the converter menu's controls and labels
CategoryLabel.Show();
CategoryComboBox.Show();
InstructionLabel.Show();
ValueOfLabel.Show();
UserInputTextBox.Show();
FromLabel.Show();
InitialUnitsComboBox.Show();
ToLabel.Show();
ResultingUnitsComboBox.Show();
BackButtonLabel.Show();
BackButton.Show();
DividerLabel.Show();
UserInputTextBox.Focus();
}
//Overrided method accepting a category parameter obtained from menu selection
private void ShowConverter(String category)
{
//Shows the converter menu's controls and labels
CategoryLabel.Show();
CategoryComboBox.Show();
InstructionLabel.Show();
ValueOfLabel.Show();
UserInputTextBox.Show();
FromLabel.Show();
InitialUnitsComboBox.Show();
ToLabel.Show();
ResultingUnitsComboBox.Show();
ConvertSubmissionButton.Show();
BackButtonLabel.Show();
BackButton.Show();
DividerLabel.Show();
//Selects the category field in the converter
CategoryComboBox.SelectedIndex = CategoryComboBox.FindStringExact(category);
//Shows the default units of measurement
ShowDefaultUnits(category);
UserInputTextBox.Focus();
}
//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();
}
}
