//File: Page.cs using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; namespace SilverlightApplication3 { public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); } private void myButton_Click(object sender, RoutedEventArgs e) { object resource = myStackPanel.Resources["theSolidColorBrush"]; if (resource != null) { SolidColorBrush brush = (SolidColorBrush)(resource); brush.Color = Colors.Blue; } } } }