CODEWITHSUNDEEP
wpfxamlcomboboxbindingcommand
Y. Ramoz
Y. Ramoz

Reputation: 67

Bind Command to a ComboBoxItem in WPF

I have a wpf project with a ComboBox. The items there inside are filled in dynamically. So it is bound to a model which contains a Label and a Command.

If the User selects an item in the Dropdown / ComboBox the Command should be executed. I tried it with a DataTemplate containing a TextBlock and a Hyperlink for the Command. But the Command will only execute if a select the Label (Hyperlink) and not if I click on the whole item.

<ComboBox ItemsSource="{Binding Path=States}" SelectedItem="{Binding CurrentState}" >
    <ComboBox.ItemTemplate>
        <DataTemplate>
            <TextBlock>
                <Hyperlink Command="{Binding Command}" TextDecorations="None" Foreground="Black">
                    <TextBlock Text="{Binding Path=Label}"/>
                </Hyperlink>
            </TextBlock>
        </DataTemplate>
    </ComboBox.ItemTemplate>
</ComboBox>

So the question is now, how can I bind my Command to a ComboBoxItem?

Upvotes: 0

Views: 949

Answers (1)

mm8
mm8

Reputation: 169160

A ComboBoxItem has no Command property but you could execute the command from the setter of the CurrentState property:

private State _currentState;
public State CurrentState
{
    get { return _currentState; }
    set
    {
        _currentState = value;
        if (_currentState != null)
        {
            _currentState.Command.Execute(null);
        }
    }
}

This property will be set whenever you select an item in the ComboBox. The other option would be to handle the SelectionChanged event in the view.

Upvotes: 1

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