HorizontalAlignment=Stretch, MaxWidth, and Left aligned at the same time?

Question

This seems like it should be easy but I\'m stumped. In WPF, I\'d like a TextBox that stretches to the width of it\'s parent, but only to a maximum width. The problem is that

Answer 1

You can use this for the Width of your DataTemplate:

Width="{Binding ActualWidth,RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ScrollContentPresenter}}}"

Make sure your DataTemplate root has Margin="0" (you can use some panel as the root and set the Margin to the children of that root)