Question

Suppose I have a context menu as a window resource:

<Window.Resources>
    <ContextMenu 
        x:Shared="false"
        x:Key="ContextMenu">
        <MenuItem Header="{??}" />
    </ContextMenu>
</Window.Resources>

And I want to bind MenuItem.Header to a dependency property called MenuItemHeader on the window. What should {??} be and what should the code behind in the window class look like?

Answer 1

You could name the window and reference it

<Window Name="Window" ...>

<MenuItem Header="{Binding MyDp, Source={x:Reference Window}}"...>

MyDp being the property. If you don’t know how to define a dependency property read the overview.

(I would use Source and x:Reference as ElementName usually does not work in disconnected places like ContextMenus)