public GradientPickView(GradientModel gradientModel, double gradientValue,
Action <GradientCallbackType, object, double> gradientPickCallback)
{
InitializeComponent();
DataContext = new GradientPickViewModel(gradientModel, gradientValue, gradientPickCallback);
}
public GradientPickView()
{
InitializeComponent();
DataContext = new GradientPickViewModel();
}