Numeric Data Entry in WPF

Question

How are you handling the entry of numeric values in WPF applications?

Without a NumericUpDown control, I\'ve been using a TextBox and handling its PreviewKeyDown eve

Answer 1

Why don't you just try using the KeyDown event rather than the PreviewKeyDown Event. You can stop the invalid characters there, but all the control characters are accepted. This seems to work for me:

private void NumericKeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
    bool isNumPadNumeric = (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9);
    bool isNumeric =((e.Key >= Key.D0 && e.Key <= Key.D9) && (e.KeyboardDevice.Modifiers == ModifierKeys.None));
    bool isDecimal = ((e.Key == Key.OemPeriod || e.Key == Key.Decimal) && (((TextBox)sender).Text.IndexOf('.') < 0));
    e.Handled = !(isNumPadNumeric || isNumeric || isDecimal);
}