Closing the DropDown of the ComboBox on Click Outside Its Bounds

Updated over 6 months ago

Environment

Product	Version
ComboBox for .NET MAUI	6.6.0

Description

To close the DropDown of the ComboBox when the user clicks outside of the component's bounds, you can use a workaround that involves attaching a gesture recognizer to the parent layout or main layout in the page and setting the IsDropDownOpen property of the ComboBox to false.

Solution

Follow these steps to implement the workaround:

1. In your XAML code, locate the parent layout or main layout that contains the ComboBox. 2. Add a GestureRecognizer to the parent layout and subscribe to its Tapped event. For example:

XAML

<VerticalStackLayout>
    <VerticalStackLayout.GestureRecognizers>
        <TapGestureRecognizer Tapped="TapGestureRecognizer_Tapped"/>
    </VerticalStackLayout.GestureRecognizers>
    <!-- Other controls and elements -->
</VerticalStackLayout>

3. In the event handler method, set the IsDropDownOpen property of the ComboBox to false. This will close the DropDown when someone clicks outside its boundaries. For example:

C#

private void TapGestureRecognizer_Tapped(object sender, TappedEventArgs e)
{
    this.comboBox.IsDropDownOpen = false;
}

Notes

• This workaround is applicable to both Android and iOS platforms.
• Make sure to replace comboBox with the actual name of your ComboBox control in the event handler method.

See Also

• ComboBox for .NET MAUI Documentation