Common Docking Events

Feb 02, 2023
2 minutes to read

All extensions included in the DevExpress MVC Docking suite (i.e. DockPanelExtension, DockZoneExtension and DockManagerExtension) provide advanced client-side event support that gives you the ability to completely control the behavior of dock panels and zones.

The most typical end-user actions (such as dragging and docking) invoke common events of all the key elements of the panel docking functionality.

StartDragging and EndDragging events, specific to DockPanel ( StartPanelDragging and EndPanelDragging specific to DockManager), allow you to respond to the corresponding end-user actions performed on a panel.
BeforeDock and AfterDock events are common for DockPanel, DockZone and DockManager. They fire before and after a panel is docked to a zone, allowing you to cancel panel docking if required.
BeforeFloat and AfterFloat events are common for DockPanel and DockManager. They fire before and after a panel is undocked from a zone, allowing you to cancel the action if required.

The table below lists available client-side common docking events.

Event	Dock Manager Events	Dock Zone Events	Dock Panel Events
StartDragging	ASPxClientDockManager.StartPanelDragging	-	ASPxClientDockPanel.StartDragging
EndDragging	ASPxClientDockManager.EndPanelDragging	-	ASPxClientDockPanel.EndDragging
BeforeDock	ASPxClientDockManager.BeforeDock	ASPxClientDockZone.BeforeDock	ASPxClientDockPanel.BeforeDock
AfterDock	ASPxClientDockManager.AfterDock	ASPxClientDockZone.AfterDock	ASPxClientDockPanel.AfterDock
BeforeFloat	ASPxClientDockManager.BeforeFloat	-	ASPxClientDockPanel.BeforeFloat
AfterFloat	ASPxClientDockManager.AfterFloat	-	ASPxClientDockPanel.AfterFloat

The image below demonstrates the sequence of events invoked when an end-user drags and docks a panel.