Assembly: System.Web (in system.web.dll)
A WebPartConnectionsCancelEventArgs that contains the event data.
The OnWebPartsConnecting method raises the WebPartsConnecting event, which occurs when two controls attempt to establish a connection. The method provides the opportunity to cancel the connection attempt. If the connection is successful, the WebPartsConnected event follows.
Page developers can provide a custom handler for the associated event by adding the OnWebPartsConnecting attribute to the <asp:webpartmanager> element on a Web page, and then assigning a custom method name to the attribute.Notes to Inheritors Developers who create derived WebPartManager classes can override the OnWebPartsConnecting method to customize the event handling.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.