Dependecy属性ICommand在嵌套控件中不起作用

Question

I have a UserControl with DependecyProperty:

public static readonly DependencyProperty OpenCommandProperty =
        DependencyProperty.Register(
            "OpenCommand",
            typeof(ICommand),
            typeof(BaseRouteFlatView),
            new UIPropertyMetadata(null));

 public ICommand OpenCommand
 {
    get { return (ICommand)GetValue(OpenCommandProperty); }
    set { SetValue(OpenCommandProperty, value); }
 }

In Xaml:

<UserControl x:Name="myUserControl">
    <StackPanel>
        <Button x:Name="first" Command="{Binding OpenCommand, ElementName=myUserControl}"/> <!--Command works-->
        <controls:DropDownButtonControl>
            <controls:DropDownButtonControl.DropDownContent>
                <Button x:Name="second" Command="{Binding OpenCommand, ElementName=myUserControl}"/>  <!--Command doesn't work-->
            </controls:DropDownButtonControl.DropDownContent>
        </controls:DropDownButtonControl>
    </StackPanel>
</abstractions:UserControlBase>

What source I have to specify for working command in second button?

Answer 1

Try the following:

public UserControl()
{
    InitializeComponent();
    NameScope.SetNameScope(second, NameScope.GetNameScope(this));
}