How to set a MenuItem's IsChecked property for a child of type Enum via XAML?

Question

I\'ve bound a MenuItem to a Enum using this solution.

The Enum Values are displayed correctly, yet I cannot seem to set a default checked value for the MenuItem\'s

Answer 1

You can do this. This will Bind to the child MenuItem's DataContext, which is "ItemA" for the first item.

<MenuItem.ItemContainerStyle> 
    <Style TargetType="MenuItem">
        <Setter Property="MenuItem.IsCheckable" Value="True"/>
        <Style.Triggers> 
            <DataTrigger Binding="{Binding}" Value="ItemA">
                <Setter Property="MenuItem.IsChecked" Value="True"/>
            </DataTrigger>
        </Style.Triggers>
    </Style>
</MenuItem.ItemContainerStyle>

Answer 2

in your solution consider changing

<Trigger Property="MenuItem.Header" Value="enums:AnEnum.ItemA" >

to

<Trigger Property="MenuItem.Header" Value="{x:Static enums:AnEnum.ItemA}" >

in your example you check that header is equal to sting "enums:AnEnum.ItemA" not to enum AnEnum member ItemA.