I created a simple web part and closed it.  I restarted my project and now my page is blank.  How can I reset the web part so that it shows up again?

Thanks,
Greg

You will need to add a CatalogZone control with a PageCatalogPart. To display the CatalogZone you will need to set the DisplayMode propery of the WebPartManager to WebPartManager.CatalogDisplayMode (in a button click event handler, for example). To then switch back to normal, set the DisplayMode back to WebPartManager.BrowseDisplayMode.

-Brock

For static web parts, you can also reset the personalization state by calling: 
   WebPartManager1.Personalization.ResetPersonalizationState();
This will deletes the modifications done by the current user to the WebPart page and reset the state of the page. Which means that closed static webpart will be brought back.