NuGet Package: DevExpress.Win.Grid
public delegate void CustomMasterRowEventHandler( object sender, CustomMasterRowEventArgs e );
Public Delegate Sub CustomMasterRowEventHandler( sender As Object, e As CustomMasterRowEventArgs )
The event source. This parameter identifies the View that raised the event.
A CustomMasterRowEventArgs that contains event data.
When you create a CustomMasterRowEventHandler delegate, you identify the method that will handle the corresponding event. To associate an event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information on event handler delegates, see Events and Delegates in MSDN.