WPF Ribbon ApplicationMenu open and close event

Question

I'm using the WPF Ribbon Application Menu:

https://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=11877

https://msdn.microsoft.com/de-de/library/ff799534(v=vs.110).aspx

• How can I close the Application (File) Menu programmatically?

• How can I detect if the user opens the Application Menu? I didn't found an appropriated event

Answer 1

You need IsDropDownOpen property and related event(s). XAML (this is for .NET 4.5+, but for 4.0 it will be almost the same, the difference will be in namespace prefix):

<StackPanel>
    <Ribbon>
        <Ribbon.ApplicationMenu>
            <RibbonApplicationMenu x:Name="Menu" DropDownOpened="RibbonApplicationMenu_DropDownOpened">
                <RibbonApplicationMenuItem Header="Foo"/>
                <RibbonApplicationMenuItem Header="Bar"/>
            </RibbonApplicationMenu>
        </Ribbon.ApplicationMenu>
    </Ribbon>
</StackPanel>

Code-behind:

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private void RibbonApplicationMenu_DropDownOpened(object sender, EventArgs e)
    {
        // user has opened menu
        Debug.WriteLine("Menu opened.");
        // let's close it from code
        Menu.IsDropDownOpen = false;
    }
}

Also, you may want to disable entire menu. This can be done using IsEnabled property.