How to display too long text properly in WPF ComboBox

Question

I have a ComboBox that shows text of various lengths. For texts that are not long there is not a problem. For the texts longer than the width of ComboBox I would like to trim the text and add "..." (an ellipsis) at the end to show them properly. The bottom line is that I don't want to change the width of the ComboBox. Does anyone know how to do this?

Answer 1

Use a custom ItemTemplate for your ComboBox, which makes use of a TextBlock with the TextTrimming property set to CharacterEllipsis.

Example:

<ComboBox ItemsSource="..." SelectedValuePath="...">
  <ComboBox.ItemTemplate>
    <DataTemplate>
      <TextBlock 
        Text="{Binding ...}" 
        TextTrimming="CharacterEllipsis" />
    </DataTemplate>
  </ComboBox.ItemTemplate>
</ComboBox>