WebPartManager::OnWebPartAdding Method
Raises the WebPartAdding event, which occurs during the process of adding a WebPart control (or a server or user control) to a WebPartZoneBase zone.
Assembly: System.Web (in System.Web.dll)
Parameters
- e
- Type: System.Web.UI.WebControls.WebParts::WebPartAddingEventArgs
A WebPartAddingEventArgs that contains the event data.
The OnWebPartAdding method raises the WebPartAdding event to indicate that a control is in the process of being added. The method also provides the option to cancel the adding process. If the control is successfully added, the WebPartAdded event follows.
Page developers can provide a custom handler for the associated event by adding the OnWebPartAdding attribute to the <asp:webpartmanager> element on a Web page, and then assigning a custom method name to the attribute.
Notes to InheritorsDevelopers who create derived WebPartManager classes can override the OnWebPartAdding method to customize the event handling.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.