Conditional Binding Without using Converter

Question

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.

Answer 1

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

Answer 2

您可以在ViewModel上绑定到Property并将布尔值和INPC逻辑放入viewModel中