WPF Text Trimming

Question

I'm using WPF's TextBlock for running text animation. I do so by setting the TranslateTransform.X from -ActualWidth to ActualWidth .

Everything works fine but there is one little problem: The text in the TextBlock.Text property is trimmed to fit the initial size window.

<TextBlock x:Name="txtRunning" 
           TextWrapping="NoWrap" 
           VerticalAlignment="Center" 
           TextTrimming="WordEllipsis" 
           Text="very long text here...">

I tried to set: TextTrimming="WordEllipsis" but it replaced the trimming with three dots (...).

I would like to know how can I replace these three dots with the full text (no trimming text).

Answer 1

I'm assuming the size of your TextBlock is being constrained by its parent container. Wrapping it in a Canvas should allow it to extend beyond the right edge of the window and give you the scrolling banner effect you want. That should be the only change necessary; you would still apply the animated transform directly to the TextBlock .

As an aside, there are some attached properties in TextOptions that you might want to look at if you will be drawing animated text, eg, TextHintingMode .

Answer 2

If you don't want the TextBlock to trim text, then don't set TextTrimming :

<TextBlock x:Name="txtRunning" TextWrapping="NoWrap" VerticalAlignment="Center" Text="very long text here...">

Setting TextTrimming="WordEllipsis" means that any text that doesn't fit within the TextBlock will be replaced with an ellipsis, "...".