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wpfcomboboxtexttrimming

How to display too long text properly in WPF ComboBox

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?

Solution

  • 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>