wpftheming

Change icon set based on selected theme

Suppose in my WPF program, I have created an option for the user to change the application theme (dark and light). What if I want to change all of the icons based on the selected theme? What's the best approach to do this?

Solution

  • Use a dynamic resource for your image source like this:

    <Image Source="{DynamicResource MyImageSource}" />

    Then you can update the resource when the theme changes with this code:

    Application.Current.Resources["MyImageSource"] = new BitmapImage(new Uri($"pack://application:,,,/Resources/{themeName}.png"));