How to get WPF ScrollViewer to automaticall scroll TextBlock content

Question

In XAML I have a WPF TextBlock inside of a ScrollViewer.

I would like the ScrollViewer to automatically scroll the TextBlock contents so that newly entered text at the bottom of the TextBlock is always kept in view.

I am assuming the TextBlock Content will always get larger as I continue to append text to it.

The ScollViewr documentation is not clear on how to do this.

All Help is greatly appreciated.

<ScrollViewer VerticalScrollBarVisibility="Auto" 
                    Height="675" 
                    Width="344" 
                    HorizontalScrollBarVisibility="Disabled"
                    CanContentScroll="True">
                    <TextBlock x:Name="scriptText" 
                        Height="675" 
                        DockPanel.Dock="Top"
                        FontSize="14" 
                        TextWrapping="Wrap" 
                        Foreground="Black"
                        Padding="3"
                        Text=""/>
                </ScrollViewer>

Answer 1

Hello there,

Do you mean a TextBox, as opposed to a TextBlock? The default behavior for a TextBox is to show the most recent text as more text is entered.

Window x:Class="textboxscrolltest.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>
        <TextBox Width="75" Height="25"/>
    </Grid>
</Window>

I don't think TextBlocks can scroll. You can put the TextBlock in a ScrollViewer.

XAML:

<ScrollViewer Name="MyScrollViewer">
    <TextBlock TextWrapping="Wrap">
        A bunch of text
    </TextBlock>
</ScrollViewer>
Code-behind:

MyScrollViewer.ScrollToBottom();

Hope this resolves your Query !!

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