WPF C# Tutorial

    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">
  
    
      A
      B
      C
    
    
      
        OK
        Cancel
      
    
  


//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));
        }
        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;
        }
    }    
}