<StackPanel
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="WpfApplication1.RoutedEventSource">
  <StackPanel.Resources>
    <Style TargetType ="{x:Type Button}">
      <Setter Property="Height" Value="30"/>
      <Setter Property="Width" Value="100"/>
      <Setter Property="HorizontalAlignment" Value="Left"/>
    </Style>
  </StackPanel.Resources>
  <Button Click="HandleClick">Button 1</Button>
  <Button Click="HandleClick">Button 2</Button>
  <Button Click="HandleClick">Button 3</Button>    
</StackPanel>

//File:Window.xaml.cs
using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1 {
    public partial class RoutedEventSource {
        void HandleClick(object sender, RoutedEventArgs e)
        {
            Button srcButton = e.Source as Button;
      srcButton.Width = 200;
        }
    }
}

   
    
     

   
  

<StackPanel
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="WpfApplication1.RoutedEventAddRemoveHandler" 
  Name="root">
    <StackPanel.Resources>
      <Style TargetType="{x:Type Button}">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Width" Value="250"/>
        <Setter Property="HorizontalAlignment" Value="Left"/>
      </Style>
    </StackPanel.Resources>
  <TextBlock Name="text1">Clicking the button below</TextBlock>
  <Button Name="b1" Click="MakeButton">Make new button and add handler to it</Button>
</StackPanel>
//File:Window.xaml.cs

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

namespace WpfApplication1 {
    public partial class RoutedEventAddRemoveHandler {
        
        void MakeButton(object sender, RoutedEventArgs e)
        {
            Button b2 = new Button();
            b2.Content = "New Button";
            // You can remove the event handler using "-=" syntax rather than "+=".
            b2.Click  += new RoutedEventHandler(Onb2Click);
            root.Children.Insert(root.Children.Count, b2);
            DockPanel.SetDock(b2, Dock.Top);
            text1.Text = "click me...";
            b1.IsEnabled = false;
        }
        void Onb2Click(object sender, RoutedEventArgs e)
        {
            text1.Text = "New Button (b2) Was Clicked!!";
        }
    }
}

   
    
     

   
  


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="150" Width="300">
    <UniformGrid Columns="2" Rows="2" ButtonBase.Click="UniformGrid_Click" 
                 MouseDown="UniformGrid_MouseDown">
        <Button Content="Button" MaxHeight="25" MaxWidth="70" Name="Button"/>
        <Label Background="LightBlue" Content="Label" Name="Label"
               HorizontalContentAlignment="Center" 
               MaxHeight="25" MaxWidth="100"/>
        <TextBlock Background="Turquoise" Padding="25,7" Text="TextBlock" 
               HorizontalAlignment="Center" VerticalAlignment="Center"
               Name="TextBlock"/>
        <Canvas MouseDown="Canvas_MouseDown">
            <Rectangle Canvas.Top="15" Canvas.Left="20" Fill="Aqua" 
                Height="25" Width="100" Name="Rectangle"/>
            <TextBlock Canvas.Top="20" Canvas.Left="45" Text="Rectangle" 
                   IsHitTestVisible="False"/>            
        </Canvas>
    </UniformGrid>
</Window>
//File:Window.xaml.cs
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        // Handles the MouseDown event on the Canvas.
        private void Canvas_MouseDown(object sender, MouseButtonEventArgs e)
        {
            FrameworkElement fe = e.OriginalSource as FrameworkElement;

            MessageBox.Show("Mouse Down on " + fe.Name, "Canvas");
        }

        // Handles the Click event on the UniformGrid.
        private void UniformGrid_Click(object sender, RoutedEventArgs e)
        {
            FrameworkElement fe = e.OriginalSource as FrameworkElement;

            MessageBox.Show("Mouse Click on " + fe.Name, "Uniform Grid");
        }

        // Handles the MouseDown event on the UniformGrid.
        private void UniformGrid_MouseDown(object sender, MouseButtonEventArgs e)
        {
            FrameworkElement fe = e.OriginalSource as FrameworkElement;

            MessageBox.Show("Mouse Down on " + fe.Name, "Uniform Grid");
        }
    }
}

   
    
     

   
  


<Window 
  x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Window1" Height="600" Width="800">
  <DockPanel>
    <StackPanel DockPanel.Dock="Bottom" Orientation="Horizontal">
      <TextBox x:Name="tbxInsertionText" Width="200" Margin="5,0" />
      <Button DockPanel.Dock="Bottom" Content="Insert" Click="btnInsert_Click"/>
    </StackPanel>
    <RichTextBox x:Name="rtbTextContent" />
  </DockPanel>
</Window>
//File:Window.xaml.cs
using System.Windows;
using System.Windows.Documents;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void btnInsert_Click(object sender, RoutedEventArgs e)
        {
            if (string.IsNullOrEmpty(tbxInsertionText.Text))
            {
                return;
            }
            rtbTextContent.BeginChange();
            if (rtbTextContent.Selection.Text != string.Empty)
            {
                rtbTextContent.Selection.Text = string.Empty;
            }
            TextPointer tp = rtbTextContent.CaretPosition.GetPositionAtOffset(0, LogicalDirection.Forward);
            rtbTextContent.CaretPosition.InsertTextInRun(tbxInsertionText.Text);
            rtbTextContent.CaretPosition = tp;
            rtbTextContent.EndChange();
            Keyboard.Focus(rtbTextContent);
        }
    }
}

   
    
     

   
  

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="150" Width="250">
    <StackPanel>
        <Popup AllowsTransparency="True" Height="100" HorizontalOffset="1cm" Name="myPopup" 
                   Placement="Right" StaysOpen="True" Width="200" >
            <Border BorderBrush="Black" BorderThickness="2">
                <DockPanel Background="White" LastChildFill="True">
                    <TextBlock Background="AliceBlue" DockPanel.Dock="Top" 
                                   FontSize="16" HorizontalAlignment="Stretch" 
                                   Margin="5" Text="A WPF Popup" />
                        <Button Click="btnClosePopup_Click" Content="Close" 
                                DockPanel.Dock="Bottom" Margin="5" 
                                HorizontalAlignment="Right" MaxHeight="23"/>
                        <Image DockPanel.Dock="Top" Margin="5" 
                               Source="c:image.gif" />
                    </DockPanel>
            </Border>
        </Popup>
        <StackPanel>
            <StackPanel.Resources>
                <Style TargetType="{x:Type Button}">
                    <Setter Property="Margin" Value="2" />                        
                    <EventSetter Event="Click" Handler="btnShowPopup_Click" />
                </Style>
            </StackPanel.Resources>
            <Button Content="Show Popup" Name="btnShowPopup" />
        </StackPanel>
    </StackPanel>
</Window>

//File:Window.xaml.cs
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;
using System.Windows.Controls.Primitives;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void btnClosePopup_Click(object sender, RoutedEventArgs e)
        {
            myPopup.IsOpen = false;
        }

        private void btnShowPopup_Click(object sender, RoutedEventArgs e)
        {
            if (sender == btnShowPopup){
            
                myPopup.IsOpen = true;
            } 
        }
    }
}

   
    
     

   
  

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="100" Width="200">
    <StackPanel>
        <Slider Name="slider" Maximum="100" Minimum="0" Value="50" />
        <StackPanel Orientation="Horizontal">
            <RepeatButton Click="SliderLeft_Click" Content="Click Me" 
                          Height="23" Margin="10" Width="70" 
                          ToolTip="Click to move slider left" />
            <RepeatButton Click="SliderRight_Click" ClickMode="Hover" 
                          Content="Touch Me" Height="23" Margin="10" 
                          ToolTip="Hover to move slider right" Width="70" />
        </StackPanel>
    </StackPanel>
</Window>
//File:Window.xaml.cs
using System.Windows;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        private void SliderLeft_Click(object sender, RoutedEventArgs e)
        {
            slider.Value -= 1;
        }

        private void SliderRight_Click(object sender, RoutedEventArgs e)
        {
            slider.Value += 1;
        }
    }
}

   
    
     

   
  


<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ScrollChangedEventArgs_layout.Window1"
    Title="ScrollChangedEventArgs Sample">
  <ScrollViewer>
    <Border BorderBrush="Black" BorderThickness="2" Background="White">
      <StackPanel HorizontalAlignment="Left" Margin="10">
        <TextBlock FontSize="20" FontWeight="Bold">
          ScrollChangedEvent Sample<LineBreak/>
        </TextBlock>
        <TextBlock Margin="0,0,0,15">Use the ScrollBar to activate the ScrollChanged event.</TextBlock>
        <Button Name="btn1" Click="scrollTrue">Enable Content Scrolling</Button>
        <ScrollViewer Name="sv1" CanContentScroll="False" ScrollChanged="sChanged">
          <FlowDocument FontFamily="Arial" PageWidth="400">
            <Paragraph>
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
            </Paragraph>
            <Paragraph>
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
            </Paragraph>

            <Paragraph>
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
            </Paragraph>

            <Paragraph>
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
            </Paragraph>

            <Paragraph>
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
            </Paragraph>
            <Paragraph>
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
              Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut
              laoreet dolore magna aliquam erat volutpat.  Ut wisi enim ad minim veniam, quis nostrud exerci tation
              ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure.
            </Paragraph>

          </FlowDocument>
        </ScrollViewer>
      </StackPanel>
    </Border>
  </ScrollViewer>
</Window>


//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace ScrollChangedEventArgs_layout
{
  public partial class Window1 : Window
  {
        public void scrollTrue(object sender, RoutedEventArgs e)
        {
            sv1.CanContentScroll = true;
            sv1.Height = 600;
            btn1.Visibility = Visibility.Collapsed;
        }
        public void sChanged(object sender, ScrollChangedEventArgs e)
        {
            if (sv1.CanContentScroll == true)
            {
                Console.WriteLine("ScrollChangedEvent just Occurred");
                Console.WriteLine("ExtentHeight is now " + e.ExtentHeight.ToString());
                Console.WriteLine("ExtentWidth is now " + e.ExtentWidth.ToString());
                Console.WriteLine("ExtentHeightChange was " + e.ExtentHeightChange.ToString());
                Console.WriteLine("ExtentWidthChange was " + e.ExtentWidthChange.ToString());
                Console.WriteLine("HorizontalOffset is now " + e.HorizontalOffset.ToString());
                Console.WriteLine("VerticalOffset is now " + e.VerticalOffset.ToString());
                Console.WriteLine("HorizontalChange was " + e.HorizontalChange.ToString());
                Console.WriteLine("VerticalChange was " + e.VerticalChange.ToString());
                Console.WriteLine("ViewportHeight is now " + e.ViewportHeight.ToString());
                Console.WriteLine("ViewportWidth is now " + e.ViewportWidth.ToString());
                Console.WriteLine("ViewportHeightChange was " + e.ViewportHeightChange.ToString());
                Console.WriteLine("ViewportWidthChange was " + e.ViewportWidthChange.ToString());
            }
        }
    }
}