How do I create a WPF Dropdown panel

Posted by Mitch on Stack Overflow See other posts from Stack Overflow or by Mitch
Published on 2010-05-20T08:37:25Z Indexed on 2010/05/20 8:40 UTC
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I'd like to create a dropdown panel in WPF the acts like a ComboBox/Expander hybrid. I'm currently using an Expander but it pushes the the controls underneath it down when it expands.

I simply want it to act like a ComboBox and overlay it's dropdown. I've looked at using Popups but they don't move with the underlying window if it's moved.

So, I've concluded that the closest control to my needs is a ComboBox with allows me to put a Grid or StackPanel into its dropdown area.

Any ideas how to achieve this?

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