SPWebPartManager.ActivateConnections Method
SharePoint 2010
Makes active all connections on a webpage that are currently inactive.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: No
Available in SharePoint Online
This override activates existing connections between the Web Part and other server controls residing in zones.
In some cases, if there is a conflict in the connections being activated, this method will disconnect a connection. During the disconnection process, the WebPartsDisconnecting() event is raised. Usually, developers can cancel this event, but in the case where there is a conflict among the connections, it cannot be canceled because the SPWebPartManager must resolve the conflict in order to complete the process of activating the connections.