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Select Product Page Function

<PageFunction     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         x:Class="NavigationApplication.SelectProductPageFunction"         Title="SelectProductPageFunction"     xmlns:local="clr-namespace:NavigationApplication"     x:TypeArguments="local:Product">   <StackPanel>     <ListBox Name="lstProducts">       <ListBoxItem>A</ListBoxItem>       <ListBoxItem>B</ListBoxItem>       <ListBoxItem>C</ListBoxItem>     </ListBox>            <TextBlock Grid.Row="1">         <Hyperlink Click="lnkOK_Click">OK</Hyperlink>         <Hyperlink Click="lnkCancel_Click">Cancel</Hyperlink>       </TextBlock>        </StackPanel> </PageFunction> //File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace NavigationApplication {     public partial class SelectProductPageFunction      {         public SelectProductPageFunction()         {             InitializeComponent();         }         private void lnkOK_Click(object sender, RoutedEventArgs e)         {             ListBoxItem item = (ListBoxItem)lstProducts.SelectedItem;                         Product product = new Product(item.Content.ToString());             OnReturn(new ReturnEventArgs<Product>(product));         }         private void lnkCancel_Click(object sender, RoutedEventArgs e)         {             OnReturn(null);         }     }     public class Product     {         private string name;         public string Name         {             get { return name; }             set { name = value; }         }         public Product(string name)         {             Name = name;         }     }     }