void ButtonClick(object sender, RoutedEventArgs e)
{
e.Handled = true;
using (SharpDevelopColorDialog dlg = new SharpDevelopColorDialog()) {
dlg.WpfColor = this.Value;
if (dlg.ShowWpfDialog() == true) {
// use SetCurrentValue instead of SetValue so that two-way data binding can be used
SetCurrentValue(ValueProperty, dlg.WpfColor);
}
}
}
