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Insert to a Panel by index

<StackPanel   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   x:Class="WpfApplication1.RoutedEventAddRemoveHandler"    Name="root">     <StackPanel.Resources>       <Style TargetType="{x:Type Button}">         <Setter Property="Height" Value="20"/>         <Setter Property="Width" Value="250"/>         <Setter Property="HorizontalAlignment" Value="Left"/>       </Style>     </StackPanel.Resources>   <TextBlock Name="text1">Clicking the button below</TextBlock>   <Button Name="b1" Click="MakeButton">Make new button and add handler to it</Button> </StackPanel> //File:Window.xaml.cs using System.Windows; using System.Windows.Controls; namespace WpfApplication1 {     public partial class RoutedEventAddRemoveHandler {                  void MakeButton(object sender, RoutedEventArgs e)         {             Button b2 = new Button();             b2.Content = "New Button";             root.Children.Insert(root.Children.Count, b2);             DockPanel.SetDock(b2, Dock.Top);             text1.Text = "click me...";             b1.IsEnabled = false;         }     } }