Gets a value that indicates whether a System.Web.UI.WebControls.WebParts.WebPart control is currently closed on a Web Parts page.
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A System.Web.UI.WebControls.WebParts.WebPart control that is closed is not rendered on the page and does not participate in page events. However, it is maintained in a page catalog by the Web Parts application, and can be added back to the page by users if the appropriate user interface (UI) is provided. For more information, see WebPart.AllowClose.