How to Bind to a Custom Controls Button Visibility from Within Another Control

Question

I have a custom control, which has a button:

Answer 1

You can create DependencyProperty in your UserControl:

public partial class SomeView : UserControl
{
    ...

    public static DependencyProperty ButtonVisibilityProperty = DependencyProperty.Register("ButtonVisibility", typeof(Visibility), typeof(SomeView));

    public Visibility ButtonVisibility
    {
        get { return (Visibility)GetValue(ButtonVisibilityProperty); }
        set { SetValue(ButtonVisibilityProperty, value); }
    }
}

bind it to Button.Visibility:

and then you can control Visibility from outside like so:

and because it's a DependencyProperty you can use Binding as well