//File:Window.xaml.cs using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; namespace WpfApplication1 { public partial class FEFindName { void Find(object sender, RoutedEventArgs e) { object wantedNode = stackPanel.FindName("dog"); if (wantedNode is TextBlock) { TextBlock wantedChild = wantedNode as TextBlock; wantedChild.Foreground = Brushes.Blue; } } } }