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Scrollable TextBox Column

<Window x:Class="Content.ScrollableTextBoxColumn"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="ScrollableTextBoxColumn" Height="181" Width="283" MinWidth="250">   <DockPanel>     <Border DockPanel.Dock="Top"  BorderBrush="SteelBlue" BorderThickness="2">     <StackPanel Margin="5" Orientation="Horizontal">       <Button Padding="3" Click="LineUp">Line Up</Button>       <Button Padding="3" Click="LineDown">Line Down</Button>       <Button Padding="3" Click="PageUp">Page Up</Button>       <Button Padding="3" Click="PageDown">Page Down</Button>     </StackPanel>   </Border>   <ScrollViewer Name="scroller">     <Grid Margin="0,10,0,0" Focusable="False">       <Grid.RowDefinitions>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>         <RowDefinition Height="Auto"></RowDefinition>       </Grid.RowDefinitions>       <Grid.ColumnDefinitions>         <ColumnDefinition Width="Auto"></ColumnDefinition>         <ColumnDefinition Width="*" MinWidth="50" MaxWidth="800"></ColumnDefinition>         <ColumnDefinition Width="Auto"></ColumnDefinition>       </Grid.ColumnDefinitions>       <Label Grid.Row="0" Grid.Column="0" Margin="3" VerticalAlignment="Center">A</Label>       <TextBox Grid.Row="0" Grid.Column="1" Margin="3" Height="Auto" VerticalAlignment="Center"></TextBox>       <Button Grid.Row="0" Grid.Column="2" Margin="3" Padding="2">A</Button>       <Label Grid.Row="1" Grid.Column="0" Margin="3" VerticalAlignment="Center">A</Label>       <TextBox Grid.Row="1" Grid.Column="1" Margin="3" Height="Auto"  VerticalAlignment="Center"></TextBox>       <Button Grid.Row="1" Grid.Column="2" Margin="3" Padding="2">B</Button>       <Label Grid.Row="2" Grid.Column="0" Margin="3" VerticalAlignment="Center">B</Label>       <TextBox Grid.Row="2" Grid.Column="1" Margin="3" Height="Auto"  VerticalAlignment="Center"></TextBox>       <Button Grid.Row="2" Grid.Column="2" Margin="3" Padding="2">B</Button>       <Label Grid.Row="3" Grid.Column="0" Margin="3" VerticalAlignment="Center">C</Label>       <TextBox Grid.Row="3" Grid.Column="1" Margin="3" Height="Auto" VerticalAlignment="Center"></TextBox>       <Button Grid.Row="3" Grid.Column="2" Margin="3" Padding="2">C</Button>       <Label Grid.Row="4" Grid.Column="0" Margin="3" VerticalAlignment="Center">D</Label>       <TextBox Grid.Row="4" Grid.Column="1" Margin="3" Height="Auto"  VerticalAlignment="Center"></TextBox>       <Button Grid.Row="4" Grid.Column="2" Margin="3" Padding="2">D</Button>       <Label Grid.Row="5" Grid.Column="0" Margin="3" VerticalAlignment="Center">E</Label>       <TextBox Grid.Row="5" Grid.Column="1" Margin="3" Height="Auto"  VerticalAlignment="Center"></TextBox>       <Button Grid.Row="5" Grid.Column="2" Margin="3" Padding="2">E</Button>       <Label Grid.Row="6" Grid.Column="0" Margin="3" VerticalAlignment="Center">F:</Label>       <TextBox Grid.Row="6" Grid.Column="1" Margin="3" Height="Auto" VerticalAlignment="Center"></TextBox>       <Button Grid.Row="6" Grid.Column="2" Margin="3" Padding="2">B</Button>       <Label Grid.Row="7" Grid.Column="0" Margin="3" VerticalAlignment="Center">S</Label>       <TextBox Grid.Row="7" Grid.Column="1" Margin="3" Height="Auto"  VerticalAlignment="Center"></TextBox>       <Button Grid.Row="7" Grid.Column="2" Margin="3" Padding="2">B</Button>     </Grid>   </ScrollViewer>   </DockPanel> </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 Content {     public partial class ScrollableTextBoxColumn : System.Windows.Window     {         public ScrollableTextBoxColumn()         {             InitializeComponent();         }         private void LineUp(object sender, RoutedEventArgs e)         {             scroller.LineUp();         }         private void LineDown(object sender, RoutedEventArgs e)         {             scroller.LineDown();         }         private void PageUp(object sender, RoutedEventArgs e)         {             scroller.PageUp();         }         private void PageDown(object sender, RoutedEventArgs e)         {             scroller.PageDown();         }     } }