Is there a WPF show/hide panel component?

I'm looking for a show/hide component, much like the toolbox 开发者_高级运维from VS2010 and eclipse's panels when something is maximized. Could anybody please point me out?

Thanks in advance

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Try:

WPF Docking Library

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Try WPF Expande Control:

<Expander>
  Content
</Expander>