Find the index number of a newly added element within a panel, using the IndexOf method : Panel « Windows Presentation Foundation « C# / CSharp Tutorial

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C# / CSharp Tutorial » Windows Presentation Foundation » Panel   24.55.11.Find the index number of a newly added element within a panel, using the IndexOf method <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   x:Class="WpfApplication1.IndexOfSample"    WindowTitle="UIElementCollection IndexOf Sample">     <DockPanel Name="ParentElement">         <TextBlock DockPanel.Dock="Top" Name="TxtDisplay"></TextBlock>         <Button DockPanel.Dock="Top" Click="FindIndex">What is the Index Number             of the Element Just Added?</Button>         <DockPanel Name="MainDisplayPanel">             <TextBlock DockPanel.Dock="Top">Text 1</TextBlock>             <TextBlock DockPanel.Dock="Top">Text 2</TextBlock>         </DockPanel>     </DockPanel> </Page> //File:Window.xaml.cs namespace WpfApplication1 {     using System.Windows;     using System.Windows.Controls;     using System.Windows.Documents;     public partial class IndexOfSample {     void FindIndex(object sender, RoutedEventArgs e)     {       TextBlock newText = new TextBlock();       MainDisplayPanel.Children.Add(newText);       newText.Text = "New element # ";       DockPanel.SetDock(newText,Dock.Top);       TxtDisplay.Text = ""+MainDisplayPanel.Children.IndexOf(newText);     }   } } 24.55.Panel 24.55.1. Add a control to a Panel 24.55.2. Remove Control from a Panel 24.55.3. Insert Button to a Panel 24.55.4. Add child control 24.55.5. Show Index of Controls 24.55.6. Clear Controls 24.55.7. Contains Element? 24.55.8. UIElement Count 24.55.9. Get Item At Index Position [0] 24.55.10. Panel is setting the data context to the scrollbar object 24.55.11. Find the index number of a newly added element within a panel, using the IndexOf method 24.55.12. Insert to a Panel by index 24.55.13. Get all children from a Panel 24.55.14. Search for an element by using Panel.FindName() 24.55.15. Panel.ZIndex 24.55.16. Without Panel.ZIndex 24.55.17. Override the default layout behavior of the Panel element and create custom layout elements that are derived from Panel.