/// <summary>
/// If equals is pressed call to calculateTotal method
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void equalsButtonClick(object sender, RoutedEventArgs e)
{
calcDisplayBox.Text = MathFunctions.calculateTotal(calcDisplayBox.Text);
calcDisplayBox.Select(calcDisplayBox.Text.Length, 0);
}
/// <summary>
/// Used to ensure no invalid characters are entered into the textbox
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void displayBoxUpdated(object sender, TextChangedEventArgs e)
{
calcDisplayBox.Text = MathFunctions.checkValidChars(calcDisplayBox.Text);
calcDisplayBox.Select(calcDisplayBox.Text.Length, 0);
}
