Part Manager. Web Parts Connecting Event
public: event System::Web::UI::WebControls::WebParts::WebPartConnectionsCancelEventHandler ^ WebPartsConnecting;
public event System.Web.UI.WebControls.WebParts.WebPartConnectionsCancelEventHandler WebPartsConnecting;
member this.WebPartsConnecting : System.Web.UI.WebControls.WebParts.WebPartConnectionsCancelEventHandler
Public Custom Event WebPartsConnecting As WebPartConnectionsCancelEventHandler
The WebPartsConnecting event is raised by the OnWebPartsConnecting method, and it signals that the connection process has begun (for example, a user has selected a control and clicked a connect verb), but is not yet completed. The event provides an opportunity to cancel a connection before it is complete. If the connection is successfully completed, this event is followed by the WebPartsConnected event.
Page developers can add a custom handler for the event by adding the
OnWebPartsConnecting attribute to the
<asp:webpartmanager> element, and assigning a custom method name to the attribute.