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WebPartManager.WebPartClosed Event

Occurs when a WebPart control (or server or user control) is removed from a page.

Namespace:  System.Web.UI.WebControls.WebParts
Assembly:  System.Web (in System.Web.dll)

public event WebPartEventHandler WebPartClosed
<asp:WebPartManager OnWebPartClosed="WebPartEventHandler" />

The WebPartClosed event indicates that a control has been successfully closed, either by a user or programmatically. 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 a page into catalog display mode, and add back to a page any controls that were previously closed.

The WebPartClosed event is associated with the OnWebPartClosed method, which both raises the event and provides a handler for it.

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.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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