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wpfbindingdatacontextcontentcontrol

Why do I have to set the content in ContentControl?

I have a relatively simple question that I do not understand. Suppose I have a ContentControl and a ContentTemplate specified and I would like to do the following:

<ContentControl ContentTemplate="{StaticResource UserView}" DataContext="{Binding User}" />

However to my surprise, this completely fails, while the following line works perfectly:

<ContentControl ContentTemplate="{StaticResource UserView}" Content="{Binding User}" />

Upon closer examination, the first line gives a surprising null as its DataContext, whereas the latter one has the correct DataContext.

Could someone explain to me what is going on?

Thanks for everything!

Solution

  • I suppose that you bind to property User that is defined is some ViewModel. Than you don't have to set DataContext:

    <ContentControl ContentTemplate="{StaticResource UserView}" Content="{Binding}" DataContext="{Binding User}" />

    And is more common write this:

    <ContentControl ContentTemplate="{StaticResource UserView}" Content="{Binding User}"/>