CODEWITHSUNDEEP
c#wpfmvvm
Simsons
Simsons

Reputation: 12745

Conditional Binding Without using Converter

How do I achieve the following:

    <ComboBox 
 IsEnabled="{Binding bVisibilty = AnotherCollection.Count > 0 ? true:false}"/>

I can use a converter which will be converting count to boolen, but is there a better way of doing than overdoing converter everywhere.

Upvotes: 0

Views: 86

Answers (2)

user1064519
user1064519

Reputation: 2190

You can use style triggers for that like so : 

  <ComboBox >
            <ComboBox.Style>
                <Style TargetType="ComboBox">
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding AnotherCollection.Count}" Value="0">
                            <Setter Property="Visibility" Value="Collapsed"/>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </ComboBox.Style>
        </ComboBox>

Obviously AnotherCollection needs to be an ObservableCollection so the UI will be notified every time item is being added\removed to it

Upvotes: 3

kenwarner
kenwarner

Reputation: 29120

You could bind to a Property on your ViewModel and put the boolean and INPC logic in the viewmodel

Upvotes: 2

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