private static void TxtIsOnlyNumber_PreviewKeyDown(object sender, KeyEventArgs e)
{
try
{
WatermarkTextBox tb = sender as WatermarkTextBox;
if ((e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9) || (e.Key >= Key.D0 && e.Key <= Key.D9) ||
e.Key == Key.Back || e.Key == Key.Left || e.Key == Key.Right)
{
if (e.KeyboardDevice.Modifiers != ModifierKeys.None)
{
e.Handled = true;
}
}
else
{
if (e.Key != Key.Tab)
{
e.Handled = true;
}
}
}
catch (Exception ex)
{ }
}
private static void OnIsOnlyNumberChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != null)
{
WatermarkTextBox txtIsOnlyNumber = sender as WatermarkTextBox;
txtIsOnlyNumber.PreviewKeyDown -= TxtIsOnlyNumber_PreviewKeyDown;
txtIsOnlyNumber.PreviewKeyDown += TxtIsOnlyNumber_PreviewKeyDown;
}
}
