how to make a "take it back" button i mean if i write something to textbox like "e" and if i click take it back it will delete it i also want to make the reverse of take it back button check the photo btw this is in WPF .net 3

Question

Answer 1

A basic way :

    <StackPanel Orientation="Horizontal" Margin="10">  
        <Button x:Name='buttonUndo'  
         Command="ApplicationCommands.Undo" CommandTarget="{Binding ElementName=textBox1}"   
         HorizontalAlignment="Left" Height="40" Width="40" FontFamily='Segoe UI Emoji' FontSize='20' Content='&#x21B6;' Click="buttonUndo_Click"/>  
        <Button x:Name='buttonRedo'   
         Command="ApplicationCommands.Redo" CommandTarget="{Binding ElementName=textBox1}"  
         HorizontalAlignment="Left" Height="40" Width="40" FontFamily='Segoe UI Emoji' FontSize='20' Content='&#x21B7;' Click="buttonRedo_Click"/>  
    </StackPanel>  
    <TextBox x:Name="textBox1" HorizontalAlignment="Left" Height="27" Margin="10,10,0,0" VerticalAlignment="Top" Width="225" />  

Code behind :

    private void buttonUndo_Click(object sender, RoutedEventArgs e)  
    {  
        textBox1.Undo();  
    }  

    private void buttonRedo_Click(object sender, RoutedEventArgs e)  
    {  
        textBox1.Redo();  
    }