Textblock modify text automatically

Question

Let's say I have two TextBlock on the same page and both binding to the same variable:

<TextBlock Text={Binding [someViewModel].someText}/>
<TextBlock Text={Binding [someViewModel].someText}/>

//someText = "testingText"

I'm wondering if it's possible to have the first textblock to show "tes......" and the second textblock showing "testingText"?

Answer 1

Try this

 <StackPanel>
    <TextBlock Text="testingtext" MaxWidth="20" TextTrimming="CharacterEllipsis" HorizontalAlignment="Left"></TextBlock>
    <TextBlock Text="testingtext" ></TextBlock>
 </StackPanel>

output

Answer 2

Make an IValueConverter for one of the bindings which converts the String to the custom format you want.