private async void ColorButton_Click(object sender, RoutedEventArgs e)
{
GradientColorSelector.ItemsSource = await GradientColorResource.GetLinearGradientCollectionAsync();
GradientColorSelector.SelectedIndex = await GradientColorResource.GetCurrentColorIndexAsync
(ViewModel.WordNoteBookViewModel.GradientBackground1, ViewModel.WordNoteBookViewModel.GradientBackground2);
ShowGradientColorSelectorMenu(false, (Button)sender);
isopened = true;
}
public async void UpdateGradientColorSelector()
{
GradientColorSelector.ItemsSource = await GradientColorResource.GetLinearGradientCollectionAsync();
}