入力条件付き Passwordbox

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雑記

XAML

<PasswordBox x:Name="pbox" Width="200" Height="20" KeyDown="PasswordBox_KeyDown" />

C#

private void PasswordBox_KeyDown(object sender, KeyRoutedEventArgs e)
{
    //文字のみ7文字まで
    if ((pbox.Password.Length > 7) ||
        (e.Key.CompareTo(VirtualKey.Number0) < 0) ||
        (e.Key.CompareTo(VirtualKey.Number9) > 0))
        e.Handled = true;
}