How to Change Theme Variation During Runtime
Environment
| Product Version | 2020.3.1020 |
| Product | Progress® Telerik® UI for WPF |
Description
How to change a theme's variation during runtime.
Solution
To change a theme's variation during runtime and reflect this change in the UI, you need to call the LoadPreset method and reload the required resource dictionaries.
private void ThemeVariationsComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var selectedItem = (RadComboBoxItem)e.AddedItems[0];
var colorVariationName = selectedItem.Content.ToString(); // Light or Dark
var colorVariation = (FluentPalette.ColorVariation)Enum.Parse(typeof(FluentPalette.ColorVariation), colorVariationName);
FluentPalette.LoadPreset(colorVariation);
OnResetTheme();
}
private static void OnResetTheme()
{
Application.Current.Resources.MergedDictionaries.Clear();
Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
{
Source = new Uri("/Telerik.Windows.Themes.Fluent;component/Themes/System.Windows.xaml", UriKind.RelativeOrAbsolute)
});
Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
{
Source = new Uri("/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.xaml", UriKind.RelativeOrAbsolute)
});
Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
{
Source = new Uri("/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.Input.xaml", UriKind.RelativeOrAbsolute)
});
// add any other required dictionaries
}