<Window x:Class="ClassicControls.CheckBoxList"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="CheckBoxList" Height="300" Width="300">
  <Grid Margin="10">
    <Grid.RowDefinitions>
      <RowDefinition Height="*"></RowDefinition>
      <RowDefinition Height="Auto"></RowDefinition>
    </Grid.RowDefinitions>
    
    <ListBox Name="lst" SelectionChanged="lst_SelectionChanged" CheckBox.Click="lst_SelectionChanged" >
      <CheckBox Margin="3">Option 1</CheckBox>
      <CheckBox Margin="3">Option 2</CheckBox>
      <CheckBox Margin="3">Option 3</CheckBox>
    </ListBox>
    <StackPanel Grid.Row="1" Margin="0,10,0,0">
      <Button Margin="0,10,0,0" Click="cmd_CheckAllItems">Examine All Items</Button>
    </StackPanel>
  </Grid>
</Window>
//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.Shapes;

namespace ClassicControls
{
    public partial class CheckBoxList : System.Windows.Window
    {
        public CheckBoxList()
        {
            InitializeComponent();
        }
        private void lst_SelectionChanged(object sender, RoutedEventArgs e)
        {
            if (e.OriginalSource is CheckBox)
            {
                lst.SelectedItem = e.OriginalSource;
            }
            
            if (lst.SelectedItem == null) return;
            Console.WriteLine(lst.SelectedIndex);
            Console.WriteLine(((CheckBox)lst.SelectedItem).IsChecked);
        }

        private void cmd_CheckAllItems(object sender, RoutedEventArgs e)
        {
            foreach (CheckBox item in lst.Items)
            {
                if (item.IsChecked == true)
                {
                    Console.WriteLine((item.Content + " is checked."));

                }
            }
        }
    }
}

   
    
     

   
      
<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Button HorizontalAlignment="Center" VerticalAlignment="Center"
            FontSize="24" Width="200" Height="100"
            Clip="M  0 50 A 100 50 0 0 0 200 50
                          A 100 50 0 0 0   0 50
                  M 90 50 A  10 10 0 0 0 110 50
                          A  10 10 0 0 0  90 50" >
        Clipped Button
    </Button>

</Grid>

   
    
    
    
    
    
     

   
      

<Window x:Class="Drawing.Clipping"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Clipping" Height="352" Width="707.2"
    >
  <Window.Resources>
    <GeometryGroup x:Key="clipGeometry" FillRule="Nonzero">
      <EllipseGeometry RadiusX="75" RadiusY="50" Center="100,150"></EllipseGeometry>
      <EllipseGeometry RadiusX="100" RadiusY="25" Center="200,150"></EllipseGeometry>
      <EllipseGeometry RadiusX="75" RadiusY="130" Center="140,140"></EllipseGeometry>
    </GeometryGroup>
  </Window.Resources>
  <Grid>

    <Button Clip="{StaticResource clipGeometry}">A button</Button>
    <Image Grid.Column="1" Clip="{StaticResource clipGeometry}" 
           Stretch="None"  Source="c:image.jpg"></Image>
  </Grid>
</Window>

   
    
    
    
    
    
     

   
      

<Window x:Class="Drawing.ClippingWithViewbox"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="ClippingWithViewbox" Height="335.2" Width="401.6"
    >
  <Window.Resources>
    <GeometryGroup x:Key="clipGeometry" FillRule="Nonzero">
      <EllipseGeometry RadiusX="75" RadiusY="50" Center="100,150"></EllipseGeometry>
      <EllipseGeometry RadiusX="100" RadiusY="25" Center="200,150"></EllipseGeometry>
      <EllipseGeometry RadiusX="75" RadiusY="130" Center="140,140"></EllipseGeometry>
    </GeometryGroup>
  </Window.Resources>
  <Grid>
    <Viewbox >
      <Button Width="350" Height="350" Clip="{StaticResource clipGeometry}">A button</Button>
    </Viewbox>
  </Grid>
</Window>

   
    
    
    
    
    
     

   
  
<StackPanel 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:d="http://schemas.microsoft.com/expression/interactivedesigner/2006"
  mc:Ignorable="d"
  x:Class="PaintDrawExamples.DynamicClipping" 
  Width="640" Height="480">

    <StackPanel.Resources>
        <Storyboard x:Key="OnLoaded"/>
    </StackPanel.Resources>
    <StackPanel.Triggers>
        <EventTrigger RoutedEvent="FrameworkElement.Loaded">
            <BeginStoryboard x:Name="OnLoaded_BeginStoryboard" Storyboard="{DynamicResource OnLoaded}"/>
        </EventTrigger>
    </StackPanel.Triggers>
    <Canvas Height="100" x:Name="Canvas" Width="436">
        <Canvas.Clip>
            <PathGeometry>
                <PathFigure StartPoint="1,5" IsClosed="True" IsFilled="True">
                    <BezierSegment IsSmoothJoin="True" Point1="2,2" Point2="26,1" Point3="24,127" IsStroked="True"/>
                    <BezierSegment IsSmoothJoin="True" Point1="1,1" Point2="14,9" Point3="19,5" IsStroked="True"/>
                    <BezierSegment IsSmoothJoin="True" Point1="14,11" Point2="18,-22.5" Point3="24,-2" IsStroked="True"/>
                    <BezierSegment IsSmoothJoin="True" Point1="26,-200" Point2="29,1" Point3="300,5" IsStroked="True"/>
                </PathFigure>
            </PathGeometry>
        </Canvas.Clip>
        <Rectangle d:LayoutOverrides="Height" Stroke="{x:Null}" Fill="Red" Width="436" Height="100" x:Name="Rectangle" Canvas.Left="0" Canvas.Top="0"/>
        <Label Background="Black" x:Name="Label" Content="This is my clipped space." Canvas.Left="46" Canvas.Top="26" d:IsHidden="True"/>
    </Canvas>
</StackPanel>
//File:Window.xaml.cs

using System;
using System.IO;
using System.Net;
using System.Windows;
using System.Windows.Input;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;

namespace PaintDrawExamples
{
    public partial class DynamicClipping
    {
        public DynamicClipping()
        {
            this.InitializeComponent();
            this.Canvas.VerticalAlignment = VerticalAlignment.Center;
            this.Canvas.HorizontalAlignment = HorizontalAlignment.Center;

            CompositionTarget.Rendering += CompositionTarget_Rendering;
        }

        private void CompositionTarget_Rendering(object sender, EventArgs e)
        {
            Point mousePos = Mouse.GetPosition(this.Canvas);
            Geometry clippingRegion = this.Canvas.Clip;

            TranslateTransform newPos = new TranslateTransform();
            newPos.X = mousePos.X - (this.Canvas.Width / 2);
            newPos.Y = mousePos.Y - (this.Canvas.Height / 2);

            clippingRegion.Transform = newPos;
        }
    }
}

   
    
     

   
  


<Window x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:scm="clr-namespace:System.ComponentModel;assembly=WindowsBase"
  xmlns:src="clr-namespace:WpfApplication1"
  xmlns:dat="clr-namespace:System.Windows.Data;assembly=PresentationFramework" 
  Title="CollectionViewSourceSample">

  <Window.Resources>

    <src:Places x:Key="places"/>

    <CollectionViewSource Source="{StaticResource places}" x:Key="cvs">
      <CollectionViewSource.SortDescriptions>
        <scm:SortDescription PropertyName="CityName"/>
      </CollectionViewSource.SortDescriptions>
      <CollectionViewSource.GroupDescriptions>
        <dat:PropertyGroupDescription PropertyName="State"/>
      </CollectionViewSource.GroupDescriptions>
    </CollectionViewSource>

  </Window.Resources>
  <DockPanel>
    <ListBox ItemsSource="{Binding Source={StaticResource cvs}}" DisplayMemberPath="CityName" Name="lb">
      <ListBox.GroupStyle>
        <x:Static Member="GroupStyle.Default"/>
      </ListBox.GroupStyle>
    </ListBox>
  </DockPanel>
</Window>

//File:Window.xaml.cs

using System.Windows;
using System.Collections.ObjectModel;

namespace WpfApplication1
{

    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }


    }

    public class Place
    {
        private string name;

        private string state;

        public string CityName
        {
            get { return name; }
            set { name = value; }
        }

        public string State
        {
            get { return state; }
            set { state = value; }
        }

        public Place()
        {
            this.name = "";
            this.state = "";
        }

        public Place(string name, string state)
        {
            this.name = name;
            this.state = state;
        }
    }

    public class Places : ObservableCollection<Place>
    {
        public Places()
        {
            Add(new Place("A", "WA"));
            Add(new Place("B", "WA"));
            Add(new Place("C", "WA"));
        }
    }
}

   
    
     

//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.Shapes;
using System.ComponentModel;
using System.Collections.ObjectModel;

namespace WpfApplication1 {

public class Employee : INotifyPropertyChanged {
public event PropertyChangedEventHandler PropertyChanged;
protected void Notify(string propName) {
if( this.PropertyChanged != null ) {
PropertyChanged(this, new PropertyChangedEventArgs(propName));
}
}

string name;
public string Name {
get { return this.name; }
set {
if( this.name == value ) { return; }
this.name = value;
Notify(“Name”);
}
}

int age;
public int Age {
get { return this.age; }
set {
if( this.age == value ) { return; }
this.age = value;
Notify(“Age”);
}
}

public Employee() { }
public Employee(string name, int age) {
this.name = name;
this.age = age;
}
}

class People : ObservableCollection { }

public partial class Window1 : System.Windows.Window {
public Window1() {
InitializeComponent();
}

}

public class AgeToRangeConverter : IValueConverter {

public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) {
return (int)value < 25 ? "Under 25" : "Over 25"; } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } } } [/csharp]