CODEWITHSUNDEEP
c#wpfcombobox
Daniel Ball
Daniel Ball

Reputation: 1663

ComboBox. Is there a way to display a selected value that isn't in the list

Say I have a ComboBox which has an array of doubles as the ItemsSource. In that array are the numbers "1.0" and "2.5". If I change the SelectedValue to "3.0" the ComboBox goes blank. How do I get the ComboBox to display "3.0" without having to add it to the list of possible values that would appear in the drop-down box?

I guess what I'm really asking is do I need some sort of customised combobox to display an item that is not in the drop down list?

Upvotes: 0

Views: 492

Answers (1)

Sheridan
Sheridan

Reputation: 69959

The simplest (but not best) way to achieve your requirements (gathered from the comments because you didn't explain them properly in your question) is to add a TextBlock in front of your ComboBox:

<Grid>
    <ComboBox ItemsSource="{Binding Items}" ... />
    <TextBlock Text="{Binding Output} Visibility="{Binding IsOutputVisible, Converter=
        {StaticResource BooleanToVisbilityConverter}}" />
</Grid>

You could then add a bool IsOutputVisible property to make it visible or hide it whenever you need to... you'd need to use a BooleanToVisbilityConverter to make this work.

Upvotes: 1

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