sdk/samples/CrossTechnologySamples/ConsumingXamlFromWpf/client/window1.xaml.cs

   1 //  Copyright (c) Microsoft Corporation.  All Rights Reserved.
   2
   3 using System;
   4 using System.Windows;
   5 using System.Windows.Controls;
   6 using System.Windows.Data;
   7 using System.Windows.Documents;
   8 using System.Windows.Media;
   9 using System.Windows.Shapes;
  10 using System.IO;
  11 using Microsoft.ServiceModel.Samples;
  12 using System.Windows.Markup;
  13 using System.Xml;
  14 using System.Windows.Threading;
  15
  16 namespace ConsumingXamlFromWpf
  17 {
  18     public partial class Window1 : Window
  19     {
  20         public Window1()
  21         {
  22             InitializeComponent();
  23         }
  24
  25         protected override void OnInitialized(EventArgs e)
  26         {
  27             base.OnInitialized(e);
  28
  29             // Handle button click
  30             _getFruitButton.Click += _getFruitButton_Click;
  31         }
  32
  33         // Keep proxy for lifetime of Window
  34         ProvideFruitClient client = new ProvideFruitClient();
  35
  36         protected override void OnClosed(EventArgs e)
  37         {
  38             base.OnClosed(e);
  39
  40             // Clean up proxy when Window closes
  41             client.Close();
  42         }
  43
  44         void _getFruitButton_Click(object sender, RoutedEventArgs e)
  45         {
  46             // Get the four fruit asynchronously, calling GotFruit when
  47             // each piece is available and passing the type of the fruit
  48             // via IAsyncResult.AsyncState so we can label each piece of fruit
  49             client.BeginGetFruit(FruitType.Banana, GotFruit, FruitType.Banana);
  50             client.BeginGetFruit(FruitType.Cherry, GotFruit, FruitType.Cherry);
  51             client.BeginGetFruit(FruitType.Lemon, GotFruit, FruitType.Lemon);
  52             client.BeginGetFruit(FruitType.Lime, GotFruit, FruitType.Lime);
  53         }
  54
  55         // Show the result when call to web service completes
  56         void GotFruit(IAsyncResult ar)
  57         {
  58             //This call back is not coming on the ui thread, so we must use the
  59             //Dispatcher to invoke on the ui thread
  60             Dispatcher.Invoke(DispatcherPriority.Normal, new AsyncCallback(AddFruit), ar);
  61         }
  62
  63         void AddFruit(IAsyncResult ar)
  64         {
  65             // Harvest the results
  66             FruitType fruitType = (FruitType)ar.AsyncState;
  67             string fruitXaml = client.EndGetFruit(ar);
  68
  69             // Parse the XAML data
  70             FrameworkElement graphic = null;
  71             using (StringReader sreader = new StringReader(fruitXaml))
  72             using (XmlTextReader xreader = new XmlTextReader(sreader))
  73             {
  74                 graphic = (FrameworkElement)XamlReader.Load(xreader);
  75                 graphic.LayoutTransform = new ScaleTransform(0.25, 0.25);
  76             }
  77
  78             // Compose some text and the graphic
  79             TextBlock text = new TextBlock();
  80             text.Text = fruitType.ToString() + ": ";
  81
  82             StackPanel fruitPanel = new StackPanel();
  83             fruitPanel.Orientation = Orientation.Horizontal;
  84             fruitPanel.Children.Add(text);
  85             fruitPanel.Children.Add(graphic);
  86
  87             // Show the text and the graphic
  88
  89             _stackPanel.Children.Add(fruitPanel);
  90         }
  91     }
  92 }