modernkeepass/ModernKeePass/Views/UserControls/ColorPickerUserControl.xaml.cs

using System.Linq;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
using ModernKeePass.ViewModels;

// The User Control item template is documented at http://go.microsoft.com/fwlink/?LinkId=234236

namespace ModernKeePass.Views.UserControls
{
    public sealed partial class ColorPickerUserControl
    {
        private ColorPickerControlVm Model => ComboBox.DataContext as ColorPickerControlVm;

        public SolidColorBrush SelectedColor
        {
            get { return (SolidColorBrush)GetValue(SelectedColorProperty); }
            set { SetValue(SelectedColorProperty, value); }
        }
        public static readonly DependencyProperty SelectedColorProperty =
            DependencyProperty.Register(
                nameof(SelectedColor),
                typeof(SolidColorBrush),
                typeof(ColorPickerUserControl),
                new PropertyMetadata(new SolidColorBrush(), (o, args) => { }));

        public ColorPickerUserControl()
        {
            InitializeComponent();
        }

        private void ComboBox_OnLoaded(object sender, RoutedEventArgs e)
        {
            Model.Initialize(SelectedColor);
        }

        private void ComboBox_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (e.RemovedItems.Any())
                SelectedColor = ComboBox.SelectedValue as SolidColorBrush;
        }
    }
}