Show Index of Controls : Panel « Windows Presentation Foundation

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    x:Class="ElemCollMethods.Pane1"

    WindowTitle="UI Element Collection Methods Sample">

 <StackPanel>

    <TextBlock Name="txt" FontSize="16">UI Element Collection - Methods</TextBlock>



    <TabControl>

        <TabItem MouseLeftButtonUp="ShowIndex">

            <TabItem.Header>Show Index of Controls</TabItem.Header>

        </TabItem>

    </TabControl>

    <StackPanel Name="sp1"></StackPanel>



 </StackPanel>

</Page>



//File:Window.xaml.cs

using System;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Navigation;

using System.Windows.Shapes;

using System.Windows.Data;

using System.Windows.Input;



namespace ElemCollMethods

{



  public partial class Pane1 : Page

  {

    System.Windows.Controls.Button btn, btn1, btn2, btn3;





    void ShowIndex(object sender, MouseButtonEventArgs e)

    {

            sp1.Children.Clear();

            btn = new Button();

      btn.Content = "Click for index";

      btn.Click += (PrintIndex);

            sp1.Children.Add(btn);



            btn1 = new Button();

      btn1.Content = "Click for index";

            sp1.Children.Add(btn1);

            btn1.Click += (PrintIndex1);



      btn2 = new Button();

      btn2.Content = "Click for index";

            sp1.Children.Add(btn2);

            btn2.Click += (PrintIndex2);



      btn3 = new Button();

      btn3.Content = "Click for index";

            sp1.Children.Add(btn3);

            btn3.Click += (PrintIndex3);



    }

    void PrintIndex(object sender, RoutedEventArgs e)

    {

            btn.Content = ((sp1.Children.IndexOf(btn)).ToString());

        }

    void PrintIndex1(object sender, RoutedEventArgs e)

    {

            btn1.Content = ((sp1.Children.IndexOf(btn1)).ToString());

        }

    void PrintIndex2(object sender, RoutedEventArgs e)

    {

            btn2.Content = ((sp1.Children.IndexOf(btn2)).ToString());

        }

    void PrintIndex3(object sender, RoutedEventArgs e)

    {

            btn3.Content = ((sp1.Children.IndexOf(btn3)).ToString());

        }

  }

}
Show Index of Controls : Panel « Windows Presentation Foundation « C# / CSharp Tutorial
