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    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ElemCollMethods.Pane1"
    WindowTitle="UI Element Collection Methods Sample">
 
    UI Element Collection - Methods
    
        
            UIElement Count
        
    
    
 

//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 GetCount(object sender, RoutedEventArgs e)
        {
            TextBlock txt3 = new TextBlock();
            sp1.Children.Add(txt3);
            txt3.Text = "UIElement Count is equal to " + sp1.Children.Count.ToString();
        }
  }
}