WebPartManager.OnWebPartClosed Method (WebPartEventArgs)
Raises the WebPartClosed event to signal that a control has been removed from a page.
Assembly: System.Web (in System.Web.dll)
To close a WebPart control means to remove it from a page so that it is not rendered, and also to place it in a special holding object called a page catalog. A page catalog, which corresponds to the PageCatalogPart control, maintains references to closed WebPart controls for each page. If a PageCatalogPart control is declared on a page within a CatalogZone zone, users can switch the page into catalog display mode, and add back to the page any controls that were previously closed.
The WebPartClosed event. Page developers can add a custom handler for the event by adding an OnWebPartClosed attribute to the <asp:webpartmanager> element in a page, and then assigning a custom method name to the attribute. One useful task a developer might carry out in this method is to display a placeholder in place of the closed control, complete with a ToolTip that would inform users how to add the control back to the page.method provides an opportunity for developers to create a custom handler for the
Available since 2.0