Wpf 简明教程

<Window x:Class = "Resources.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "525">

   <Grid>

   </Grid>

</Window>

<Window x:Class = "WPFXAMLOverview.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "604">

   <StackPanel>
      <Button x:Name = "button" Content = "Click Me" HorizontalAlignment = "Left"
         Margin = "150" VerticalAlignment = "Top" Width = "75" />
   </StackPanel>

</Window>

using System.Windows;
using System.Windows.Controls;

namespace WPFXAMLOverview {
   /// <summary>
      /// Interaction logic for MainWindow.xaml
   /// </summary>

   public partial class MainWindow : Window {

      public MainWindow() {
         InitializeComponent();

         // Create the StackPanel
         StackPanel stackPanel = new StackPanel();
         this.Content = stackPanel;

         // Create the Button
         Button button = new Button();
         button.Content = "Click Me";
         button.HorizontalAlignment = HorizontalAlignment.Left;
         button.Margin = new Thickness(150);
         button.VerticalAlignment = VerticalAlignment.Top;
         button.Width = 75;
         stackPanel.Children.Add(button);
      }
   }
}

<Window x:Class = "WPFElementsTree.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "604">

   <StackPanel>
      <Button x:Name = "button" Height = "30" Width = "70" Content = "OK" Margin = "20" />

      <ListBox x:Name = "listBox" Height = "100" Width = "100" Margin = "20">
         <ListBoxItem Content = "Item 1" />
         <ListBoxItem Content = "Item 2" />
         <ListBoxItem Content = "Item 3" />
      </ListBox>

   </StackPanel>

</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

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 WpfApplication3 {
   /// <summary>
      /// Interaction logic for UserControl1.xaml
   /// </summary>

   public partial class UserControl1 : UserControl {

      public UserControl1() {
         InitializeComponent();
      }

      public static readonly DependencyProperty SetTextProperty =
         DependencyProperty.Register("SetText", typeof(string), typeof(UserControl1), new
            PropertyMetadata("", new PropertyChangedCallback(OnSetTextChanged)));

      public string SetText {
         get { return (string)GetValue(SetTextProperty); }
         set { SetValue(SetTextProperty, value); }
      }

      private static void OnSetTextChanged(DependencyObject d,
         DependencyPropertyChangedEventArgs e) {
         UserControl1 UserControl1Control = d as UserControl1;
         UserControl1Control.OnSetTextChanged(e);
      }

      private void OnSetTextChanged(DependencyPropertyChangedEventArgs e) {
         tbTest.Text = e.NewValue.ToString();
      }
   }
}

<Window x:Class = "WpfApplication3.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:views = "clr-namespace:WpfApplication3"
   Title = "MainWindow" Height = "350" Width = "604">

   <Grid>
      <views:UserControl1 SetText = "Hellow World"/>
   </Grid>

</Window>

<Window x:Class = "WPFRoutedEvents.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "450" Width = "604" ButtonBase.Click  = "Window_Click" >

   <Grid>
      <StackPanel Margin = "20" ButtonBase.Click = "StackPanel_Click">

         <StackPanel Margin = "10">
            <TextBlock Name = "txt1" FontSize = "18" Margin = "5" Text = "This is a TextBlock 1" />
            <TextBlock Name = "txt2" FontSize = "18" Margin = "5" Text = "This is a TextBlock 2" />
            <TextBlock Name = "txt3" FontSize = "18" Margin = "5" Text = "This is a TextBlock 3" />
         </StackPanel>

         <Button Margin = "10" Content = "Click me" Click = "Button_Click" Width = "80"/>
      </StackPanel>
   </Grid>

</Window>

using System.Windows;

namespace WPFRoutedEvents {
   /// <summary>
      /// Interaction logic for MainWindow.xaml
   /// </summary>

   public partial class MainWindow : Window {

      public MainWindow() {
         InitializeComponent();
      }

      private void Button_Click(object sender, RoutedEventArgs e) {
         txt1.Text = "Button is Clicked";
      }

      private void StackPanel_Click(object sender, RoutedEventArgs e) {
         txt2.Text = "Click event is bubbled to Stack Panel";
      }

      private void Window_Click(object sender, RoutedEventArgs e) {
         txt3.Text = "Click event is bubbled to Window";
      }

   }
}

private void StackPanel_Click(object sender, RoutedEventArgs e) {
   txt2.Text = "Click event is bubbled to Stack Panel";
   e.Handled = true;
}

<ResourceDictionary
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:local = "clr-namespace:WPFCustomRoutedEvent">

   <Style TargetType = "{x:Type local:MyCustomControl}">
      <Setter Property = "Margin" Value = "50"/>
      <Setter Property = "Template">
         <Setter.Value>
            <ControlTemplate TargetType = "{x:Type local:MyCustomControl}">

               <Border Background = "{TemplateBinding Background}"
                  BorderBrush = "{TemplateBinding BorderBrush}"
                  BorderThickness = "{TemplateBinding BorderThickness}">
                  <Button x:Name = "PART_Button" Content = "Click Me" />
               </Border>

            </ControlTemplate>
         </Setter.Value>
      </Setter>
   </Style>

</ResourceDictionary>

using System.Windows;
using System.Windows.Controls;

namespace WPFCustomRoutedEvent {

   public class MyCustomControl : Control {

      static MyCustomControl() {
         DefaultStyleKeyProperty.OverrideMetadata(typeof(MyCustomControl),
            new FrameworkPropertyMetadata(typeof(MyCustomControl)));
      }

      public override void OnApplyTemplate() {
         base.OnApplyTemplate();

         //demo purpose only, check for previous instances and remove the handler first
         var button  =  GetTemplateChild("PART_Button") as Button;
         if (button ! =  null)
         button.Click + =  Button_Click;
      }

      void Button_Click(object sender, RoutedEventArgs e) {
         RaiseClickEvent();
      }

      public static readonly RoutedEvent ClickEvent  =
         EventManager.RegisterRoutedEvent("Click", RoutingStrategy.Bubble,
         typeof(RoutedEventHandler), typeof(MyCustomControl));

      public event RoutedEventHandler Click {
         add { AddHandler(ClickEvent, value); }
         remove { RemoveHandler(ClickEvent, value); }
      }

      protected virtual void RaiseClickEvent() {
         RoutedEventArgs args = new RoutedEventArgs(MyCustomControl.ClickEvent);
         RaiseEvent(args);
      }

   }
}

using System.Windows;

namespace WPFCustomRoutedEvent {
   // <summary>
      // Interaction logic for MainWindow.xaml
   // </summary>

   public partial class MainWindow : Window {

      public MainWindow() {
         InitializeComponent();
      }

      private void MyCustomControl_Click(object sender, RoutedEventArgs e) {
         MessageBox.Show("It is the custom routed event of your custom control");
      }

   }
}

<Window x:Class = "WPFCustomRoutedEvent.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:local = "clr-namespace:WPFCustomRoutedEvent"
   Title = "MainWindow" Height = "350" Width = "604">

   <Grid>
      <local:MyCustomControl Click = "MyCustomControl_Click" />
   </Grid>

</Window>

<Window x:Class = "WPFDataBinding.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPFDataBinding"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

   <Grid>

      <Grid.RowDefinitions>
         <RowDefinition Height = "Auto" />
         <RowDefinition Height = "Auto" />
         <RowDefinition Height = "*" />
      </Grid.RowDefinitions>

      <Grid.ColumnDefinitions>
         <ColumnDefinition Width = "Auto" />
         <ColumnDefinition Width = "200" />
      </Grid.ColumnDefinitions>

      <Label Name = "nameLabel" Margin = "2">_Name:</Label>

      <TextBox Name = "nameText" Grid.Column = "1" Margin = "2"
         Text = "{Binding Name, Mode = OneWay}"/>

      <Label Name = "ageLabel" Margin = "2" Grid.Row = "1">_Age:</Label>

      <TextBox Name = "ageText" Grid.Column = "1" Grid.Row = "1" Margin = "2"
         Text = "{Binding Age, Mode = OneWay}"/>

      <StackPanel Grid.Row = "2" Grid.ColumnSpan = "2">
         <Button Content = "_Show..." Click="Button_Click" />
      </StackPanel>

   </Grid>
</Window>

using System.Windows;
namespace WPFDataBinding {

   public partial class MainWindow : Window {

      Person person = new Person { Name = "Salman", Age = 26 };

      public MainWindow() {
         InitializeComponent();
         this.DataContext = person;
      }

      private void Button_Click(object sender, RoutedEventArgs e) {
         string message = person.Name + " is " + person.Age;
         MessageBox.Show(message);
      }
   }

   public class Person {

      private string nameValue;

      public string Name {
         get { return nameValue; }
         set { nameValue = value; }
      }

      private double ageValue;

      public double Age {
         get { return ageValue; }

         set {
            if (value != ageValue) {
               ageValue = value;
            }
         }
      }

   }
}

<Window x:Class = "WPFDataBinding.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPFDataBinding"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

   <Grid>

      <Grid.RowDefinitions>
         <RowDefinition Height = "Auto" />
         <RowDefinition Height = "Auto" />
         <RowDefinition Height = "*" />
      </Grid.RowDefinitions>

      <Grid.ColumnDefinitions>
         <ColumnDefinition Width = "Auto" />
         <ColumnDefinition Width = "200" />
      </Grid.ColumnDefinitions>

      <Label Name = "nameLabel" Margin = "2">_Name:</Label>
      <TextBox Name = "nameText" Grid.Column = "1" Margin = "2"
         Text = "{Binding Name, Mode = TwoWay}"/>
      <Label Name = "ageLabel" Margin = "2" Grid.Row = "1">_Age:</Label>
      <TextBox Name = "ageText" Grid.Column = "1" Grid.Row = "1" Margin = "2"
         Text = "{Binding Age, Mode = TwoWay}"/>

      <StackPanel Grid.Row = "2" Grid.ColumnSpan = "2">
         <Button Content = "_Show..." Click = "Button_Click" />
      </StackPanel>

   </Grid>

</Window>

<Window x:Class = "WPFResources.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPFResources"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "525">

   <Window.Resources>
      <SolidColorBrush x:Key = "brushResource" Color = "Blue" />
   </Window.Resources>

   <StackPanel>
      <Rectangle Height = "50" Margin = "20" Fill = "{StaticResource brushResource}" />
      <Rectangle Height = "50" Margin = "20" Fill = "{DynamicResource brushResource}" />
      <Button x:Name = "changeResourceButton"
         Content = "_Change Resource" Click = "changeResourceButton_Click" />
   </StackPanel>

</Window>

<Window x:Class = "WPFStyle.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace: WPFStyle"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

   <StackPanel>
      <Button Content = "Button1" Height = "30" Width = "80"
         Foreground = "Blue" FontSize = "12" Margin = "10"/>
      <Button Content = "Button2" Height = "30" Width = "80"
         Foreground = "Blue" FontSize = "12" Margin = "10"/>
      <Button Content = "Button3" Height = "30" Width = "80"
         Foreground = "Blue" FontSize = "12" Margin = "10"/>
   </StackPanel>

</Window>

<Window x:Class = "XAMLStyle.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:XAMLStyle"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

   <Window.Resources>
      <Style x:Key = "myButtonStyle" TargetType = "Button">
         <Setter Property = "Height" Value = "30" />
         <Setter Property = "Width" Value = "80" />
         <Setter Property = "Foreground" Value = "Blue" />
         <Setter Property = "FontSize" Value = "12" />
         <Setter Property = "Margin" Value = "10" />
      </Style>
   </Window.Resources>

   <StackPanel>
      <Button Content = "Button1" Style = "{StaticResource myButtonStyle}" />
      <Button Content = "Button2" Style = "{StaticResource myButtonStyle}" />
      <Button Content = "Button3" Style="{StaticResource myButtonStyle}" />
   </StackPanel>

</Window>

<Window x:Class = "WPFPropertyTriggers.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "604">

   <Window.Resources>
      <Style x:Key = "TriggerStyle" TargetType = "Button">
         <Setter Property = "Foreground" Value = "Blue" />
         <Style.Triggers>
            <Trigger Property = "IsMouseOver" Value = "True">
               <Setter Property = "Foreground" Value = "Green" />
            </Trigger>
         </Style.Triggers>
      </Style>
   </Window.Resources>

   <Grid>
      <Button Width = "100" Height = "70"
         Style = "{StaticResource TriggerStyle}" Content = "Trigger"/>
   </Grid>

</Window>

<Window x:Class = "WPFDataTrigger.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "Data Trigger" Height = "350" Width = "604">

   <StackPanel HorizontalAlignment = "Center">
      <CheckBox x:Name = "redColorCheckBox"
         Content = "Set red as foreground color" Margin = "20"/>

      <TextBlock Name = "txtblock" VerticalAlignment = "Center"
         Text = "Event Trigger" FontSize = "24" Margin = "20">
         <TextBlock.Style>
            <Style>
               <Style.Triggers>
                  <DataTrigger Binding = "{Binding ElementName = redColorCheckBox, Path = IsChecked}"
                     Value = "true">
                     <Setter Property = "TextBlock.Foreground" Value = "Red"/>
                     <Setter Property = "TextBlock.Cursor" Value = "Hand" />
                  </DataTrigger>
               </Style.Triggers>
            </Style>
         </TextBlock.Style>
      </TextBlock>

   </StackPanel>

</Window>

<Window x:Class = "WPFEventTrigger.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "604">

   <Grid>
      <Button Content = "Click Me" Width = "60" Height = "30">

         <Button.Triggers>
            <EventTrigger RoutedEvent = "Button.Click">
               <EventTrigger.Actions>
                  <BeginStoryboard>
                     <Storyboard>

                        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty =
                           "Width" Duration = "0:0:4">
                           <LinearDoubleKeyFrame Value = "60" KeyTime = "0:0:0"/>
                           <LinearDoubleKeyFrame Value = "120" KeyTime = "0:0:1"/>
                           <LinearDoubleKeyFrame Value = "200" KeyTime = "0:0:2"/>
                           <LinearDoubleKeyFrame Value = "300" KeyTime = "0:0:3"/>
                        </DoubleAnimationUsingKeyFrames>

                        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty = "Height"
                           Duration = "0:0:4">
                           <LinearDoubleKeyFrame Value = "30" KeyTime = "0:0:0"/>
                           <LinearDoubleKeyFrame Value = "40" KeyTime = "0:0:1"/>
                           <LinearDoubleKeyFrame Value = "80" KeyTime = "0:0:2"/>
                           <LinearDoubleKeyFrame Value = "150" KeyTime = "0:0:3"/>
                        </DoubleAnimationUsingKeyFrames>

                     </Storyboard>
                  </BeginStoryboard>
               </EventTrigger.Actions>
            </EventTrigger>
         </Button.Triggers>

      </Button>
   </Grid>

</Window>

<Window x:Class = "WPFDebuggingDemo.Window1"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "Window1" Height = "400" Width = "604">

   <Grid>
      <TextBox Height = "23" Margin = "0,44,169,0" Name = "textBox1"
         VerticalAlignment = "Top" HorizontalAlignment = "Right" Width = "120" />

      <TextBox Height = "23" Margin = "0,99,169,0" Name = "textBox2"
         VerticalAlignment = "Top" HorizontalAlignment = "Right" Width = "120" />

      <TextBox HorizontalAlignment = "Right" Margin = "0,153,169,0"
         Name = "textBox3" Width = "120" Height = "23" VerticalAlignment = "Top" />

      <Label Height = "28" Margin = "117,42,0,0" Name = "label1"
         VerticalAlignment = "Top" HorizontalAlignment = "Left" Width = "120">
         Item 1</Label>

      <Label Height = "28" HorizontalAlignment = "Left"
         Margin = "117,99,0,0" Name = "label2" VerticalAlignment = "Top" Width = "120">
         Item 2</Label>

      <Label HorizontalAlignment = "Left" Margin = "117,153,0,181"
         Name = "label3" Width = "120">Item 3</Label>

      <Button Height = "23" HorizontalAlignment = "Right" Margin = "0,0,214,127"
         Name = "button1" VerticalAlignment = "Bottom" Width = "75"
         Click = "button1_Click">Total</Button>

      <Label Height = "28" HorizontalAlignment = "Right"
         Margin = "0,0,169,66" Name = "label4" VerticalAlignment = "Bottom" Width = "120"/>

   </Grid>

</Window>

using System;
using System.Collections.Generic;
using System.Linq;
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 WPFDebuggingDemo {
   /// <summary>
      /// Interaction logic for Window1.xaml
   /// </summary>

   public partial class Window1 : Window {

      public Window1() {
         InitializeComponent();
      }

      private void button1_Click(object sender, RoutedEventArgs e) {

         if (textBox1.Text.Length > 0 && textBox2.Text.Length > 0 && textBox2.Text.Length > 0) {
            double total = Convert.ToDouble(textBox1.Text) +
            Convert.ToDouble(textBox2.Text) + Convert.ToDouble(textBox3.Text);
            label4.Content = total.ToString();
         }
         else {
            MessageBox.Show("Enter the value in all field.");
         }
      }
   }
}

<Window x:Class = "DataBindingOneWay.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "604">

   <Grid>
      <StackPanel Name = "Display">
         <StackPanel Orientation = "Horizontal" Margin = "50, 50, 0, 0">
            <TextBlock Text = "Name: " Margin = "10" Width = "100"/>
            <TextBlock Margin = "10" Width = "100" Text = "{Binding FirstName}"/>
         </StackPanel>

         <StackPanel Orientation = "Horizontal" Margin = "50,0,50,0">
            <TextBlock Text = "Title: " Margin = "10" Width = "100"/>
            <TextBlock Margin = "10" Width = "100" Text = "{Binding Title}" />
         </StackPanel>

      </StackPanel>
   </Grid>

</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBindingOneWay {

   public class Employee {
      public string Name { get; set; }
      public string Title { get; set; }

      public static Employee GetEmployee() {

         var emp = new Employee() {
            Name = "Ali Ahmed", Title = "Developer"
         };

         return emp;
      }
   }
}

using System;
using System.Windows;
using System.Windows.Controls;

namespace DataBindingOneWay {
   /// <summary>
      /// Interaction logic for MainWindow.xaml
   /// </summary>

   public partial class MainWindow : Window {

      public MainWindow() {
         InitializeComponent();
         DataContext = Employee.GetEmployee();
      }
   }
}

System.Windows.Data Error: 40 : BindingExpression path error: 'FirstName'
   property not found on 'object' ''Employee' (HashCode=11611730)'.
   BindingExpression:Path = FirstName; DataItem = 'Employee' (HashCode = 11611730);
   target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')

<Window x:Class = "XAMLTestBinding.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   Title = "MainWindow" Height = "350" Width = "604">

   <StackPanel>
      <ComboBox Name = "comboBox"  Margin = "50" Width = "100">
         <ComboBoxItem Content = "Green" />
         <ComboBoxItem  Content = "Yellow" IsSelected = "True" />
         <ComboBoxItem Content = "Orange" />
      </ComboBox>

      <TextBox  Name = "textBox" Margin = "50" Width = "100" Height = "23"
         VerticalAlignment = "Top" Text  =
         "{Binding ElementName = comboBox, Path = SelectedItem.Content, Mode = TwoWay, UpdateSourceTrigger = PropertyChanged}"
         Background = "{Binding ElementName = comboBox, Path = SelectedItem.Content}">
      </TextBox>

   </StackPanel>

</Window>

try {
   ///This will still trigger the exception
}
catch (ExceptionClassName e) {
   // error handling code
}
catch (ExceptionClassName e) {
   // error handling code
}
catch (ExceptionClassName e) {
   // error handling code
}
finally {
   // statements to be executed
}

<Window
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPFBehaviors"
   xmlns:i = "http://schemas.microsoft.com/expression/2010/interactivity"
   xmlns:ei = "http://schemas.microsoft.com/expression/2010/interactions"
   x:Class = "WPFBehaviors.MainWindow"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

   <Window.Resources>
      <Storyboard x:Key = "Storyboard1" RepeatBehavior = "Forever" AutoReverse = "True">

         <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty =
            "(UIElement.RenderTransform).(TransformGroup.Children )[3].(TranslateTransform.X)"
            Storyboard.TargetName = "ellipse">
            <EasingDoubleKeyFrame KeyTime = "0:0:1" Value = "301.524"/>
            <EasingDoubleKeyFrame KeyTime = "0:0:2" Value = "2.909"/>
         </DoubleAnimationUsingKeyFrames>

         <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty =
            "(UIElement.RenderTransform).(TransformGroup.Children )[3].(TranslateTransform.Y)"
            Storyboard.TargetName = "ellipse">
            <EasingDoubleKeyFrame KeyTime = "0:0:1" Value = "-0.485"/>
            <EasingDoubleKeyFrame KeyTime = "0:0:2" Value = "0"/>
         </DoubleAnimationUsingKeyFrames>

         <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty = "(ContentControl.Content)"
            Storyboard.TargetName = "button">
            <DiscreteObjectKeyFrame KeyTime = "0" Value = "Play"/>
         </ObjectAnimationUsingKeyFrames>

         <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty = "(ContentControl.Content)"
            Storyboard.TargetName = "button1">
            <DiscreteObjectKeyFrame KeyTime = "0" Value = "Stop"/>
            <DiscreteObjectKeyFrame KeyTime = "0:0:2" Value = "Stop"/>
         </ObjectAnimationUsingKeyFrames>
      </Storyboard>
   </Window.Resources>

   <Window.Triggers>
      <EventTrigger RoutedEvent = "FrameworkElement.Loaded">
         <BeginStoryboard Storyboard = "{StaticResource Storyboard1}"/>
      </EventTrigger>
   </Window.Triggers>

   <Grid>
      <Ellipse x:Name = "ellipse" Fill = "#FFAAAAC5" HorizontalAlignment = "Left"
         Height = "50.901" Margin = "49.324,70.922,0,0" Stroke = "Black"
         VerticalAlignment = "Top" Width = "73.684" RenderTransformOrigin = "0.5,0.5">
         <Ellipse.RenderTransform>
            <TransformGroup>
               <ScaleTransform/>
               <SkewTransform/>
               <RotateTransform/>
               <TranslateTransform/>
            </TransformGroup>
         </Ellipse.RenderTransform>
      </Ellipse>

      <Button x:Name = "button" Content = "Play" HorizontalAlignment = "Left" Height = "24.238"
         Margin = "63.867,0,0,92.953" VerticalAlignment = "Bottom" Width = "74.654">
         <i:Interaction.Triggers>
            <i:EventTrigger EventName = "Click">
               <ei:ControlStoryboardAction Storyboard = "{StaticResource Storyboard1}"/>
            </i:EventTrigger>
         </i:Interaction.Triggers>
      </Button>

      <Button x:Name = "button1" Content = "Stop" HorizontalAlignment = "Left" Height = "24.239"
         Margin = "160.82,0,0,93.922" VerticalAlignment = "Bottom" Width = "75.138">
         <i:Interaction.Triggers>
            <i:EventTrigger EventName = "Click">
               <ei:ControlStoryboardAction ControlStoryboardOption = "Stop"
                  Storyboard = "{StaticResource Storyboard1}"/>
            </i:EventTrigger>
         </i:Interaction.Triggers>
      </Button>

   </Grid>
</Window>

<Window x:Class = "WPFDragAndDrop.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPFDragAndDrop"
   mc:Ignorable = "d" Title = "MainWindow" Height = "402.551" Width = "604">

   <Grid>
      <Rectangle Name = "Target" Fill = "AliceBlue" HorizontalAlignment = "Left"
         Height = "345" Margin = "10,10,0,0" Stroke = "Black"
         VerticalAlignment = "Top" Width = "387" AllowDrop = "True" Drop = "Target_Drop"/>

      <Rectangle Fill = "Beige" HorizontalAlignment = "Left" Height = "65"
         Margin = "402,10,0,0" Stroke = "Black" VerticalAlignment = "Top"
         Width = "184" MouseLeftButtonDown = "Rect_MLButtonDown"/>

      <Rectangle Fill = "LightBlue" HorizontalAlignment = "Left" Height = "65"
         Margin = "402,80,0,0" Stroke = "Black" VerticalAlignment = "Top"
         Width = "184" MouseLeftButtonDown = "Rect_MLButtonDown"/>

      <Rectangle Fill = "LightCoral" HorizontalAlignment = "Left" Height = "65"
         Margin = "402,150,0,0" Stroke = "Black" VerticalAlignment = "Top"
         Width = "184" MouseLeftButtonDown = "Rect_MLButtonDown"/>

      <Rectangle Fill = "LightGray" HorizontalAlignment = "Left" Height = "65"
         Margin = "402,220,0,0" Stroke = "Black" VerticalAlignment = "Top"
         Width = "184" MouseLeftButtonDown = "Rect_MLButtonDown"/>

      <Rectangle Fill = "OliveDrab" HorizontalAlignment = "Left" Height = "65"
         Margin = "402,290,0,-7" Stroke = "Black" VerticalAlignment = "Top"
         Width = "184" MouseLeftButtonDown = "Rect_MLButtonDown"/>
   </Grid>

</Window>

using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;

namespace WPFDragAndDrop {
   /// <summary>
      /// Interaction logic for MainWindow.xaml
   /// </summary>

   public partial class MainWindow : Window {

      public MainWindow() {
         InitializeComponent();
      }

      private void Rect_MLButtonDown(object sender, MouseButtonEventArgs e) {
         Rectangle rc = sender as Rectangle;
         DataObject data = new DataObject(rc.Fill);
         DragDrop.DoDragDrop(rc, data,DragDropEffects.Move);
      }

      private void Target_Drop(object sender, DragEventArgs e) {
         SolidColorBrush scb = (SolidColorBrush)e.Data.GetData(typeof(SolidColorBrush));
         Target.Fill = scb;
      }
   }
}

<Window x:Class = "WPF3DGraphics.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPF3DGraphics"
   mc:Ignorable = "d" Title = "MainWindow" Height = "500" Width = "604">

   <Grid>
      <Viewport3D>

         <Viewport3D.Camera>
            <PerspectiveCamera Position = "2,0,10" LookDirection = "0.2,0.4,-1"
               FieldOfView = "65" UpDirection = "0,1,0" />
         </Viewport3D.Camera>

         <ModelVisual3D>
            <ModelVisual3D.Content>
               <Model3DGroup>
                  <AmbientLight Color = "Bisque" />

                  <GeometryModel3D>
                     <GeometryModel3D.Geometry>
                        <MeshGeometry3D Positions = "0,0,0 0,8,0 10,0,0 8,8,0"
                           Normals = "0,0,1 0,0,1 0,0,1 0,0,1" TriangleIndices = "0,2,1 1,2,3"/>
                     </GeometryModel3D.Geometry>

                     <GeometryModel3D.Material>
                        <DiffuseMaterial Brush = "Bisque" />
                     </GeometryModel3D.Material>
                  </GeometryModel3D>

               </Model3DGroup>
            </ModelVisual3D.Content>
         </ModelVisual3D>

      </Viewport3D>
   </Grid>

</Window>

<Window x:Class = "WPF3DGraphics1.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPF3DGraphics1"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "525">

   <Grid>
      <Viewport3D Name="viewport3D1">

         <Viewport3D.Camera>
            <PerspectiveCamera x:Name = "camMain" Position = "6 5 4" LookDirection = "-6 -5 -4">
            </PerspectiveCamera>
         </Viewport3D.Camera>

         <ModelVisual3D>
            <ModelVisual3D.Content>
               <DirectionalLight x:Name = "dirLightMain" Direction = "-1,-1,-1">
               </DirectionalLight>
            </ModelVisual3D.Content>
         </ModelVisual3D>

         <ModelVisual3D x:Name = "MyModel">
            <ModelVisual3D.Content>
               <GeometryModel3D>

                  <GeometryModel3D.Geometry>
                     <MeshGeometry3D x:Name = "meshMain"
                        Positions = "0 0 0  1 0 0  0 1 0  1 1 0  0 0 1  1 0 1  0 1 1  0 1 1"
                        TriangleIndices = "2 3 1  3 1 0  7 1 3  7 5 1  6 5 7  6 4 5  6 2 0
                        2 0 4  2 7 3  2 6 7  0 1 5  0 5 4">
                     </MeshGeometry3D>
                  </GeometryModel3D.Geometry>

                  <GeometryModel3D.Material>
                     <DiffuseMaterial x:Name = "matDiffuseMain">
                        <DiffuseMaterial.Brush>
                           <SolidColorBrush Color = "Bisque"/>
                        </DiffuseMaterial.Brush>
                     </DiffuseMaterial>
                  </GeometryModel3D.Material>

               </GeometryModel3D>
            </ModelVisual3D.Content>

            <ModelVisual3D.Transform>
               <RotateTransform3D>
                  <RotateTransform3D.Rotation>
                     <AxisAngleRotation3D x:Name = "rotate" Axis = "1 2 1"/>
                  </RotateTransform3D.Rotation>
               </RotateTransform3D>
            </ModelVisual3D.Transform>

         </ModelVisual3D>
      </Viewport3D>

      <Slider Height = "23" HorizontalAlignment = "Left"
         Margin = "145,271,0,0" Name = "slider1"
         VerticalAlignment = "Top" Width = "269"
         Maximum = "360"
         Value = "{Binding ElementName = rotate, Path=Angle}" />

   </Grid>

</Window>

<Window x:Class = "WPFMultimedia.MainWindow"
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
   xmlns:local = "clr-namespace:WPFMultimedia"
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

   <Grid>
      <StackPanel HorizontalAlignment = "Center" VerticalAlignment = "Center">
         <MediaElement Name = "myMedia" Source = "D:\MicrosoftMVA.mp4"
            LoadedBehavior = "Manual" Width = "591" Height = "274" />
         <StackPanel Orientation = "Horizontal" Margin = "0,10,0,0">
            <Button Content = "Play" Margin = "0,0,10,0" Padding = "5" Click = "mediaPlay" />
            <Button Content = "Pause" Margin = "0,0,10,0" Padding = "5" Click = "mediaPause" />
            <Button x:Name = "muteButt" Content = "Mute" Padding = "5" Click = "mediaMute" />
         </StackPanel>
      </StackPanel>
   </Grid>

</Window>

using System;
using System.Windows;

namespace WPFMultimedia {

   public partial class MainWindow : Window {

      public MainWindow() {
         InitializeComponent();
         myMedia.Volume = 100;
         myMedia.Play();
      }

      void mediaPlay(Object sender, EventArgs e) {
         myMedia.Play();
      }

      void mediaPause(Object sender, EventArgs e) {
         myMedia.Pause();
      }

      void mediaMute(Object sender, EventArgs e) {

         if (myMedia.Volume == 100) {
            myMedia.Volume = 0;
            muteButt.Content = "Listen";
         }
         else {
            myMedia.Volume = 100;
            muteButt.Content = "Mute";
         }
      }
   }
}