Gets the handle of the currently processed master row in the current View.
NuGet Package: DevExpress.Win.Grid
An integer value representing a row handle.
Use the RowHandle property to identify the row for which an event has been raised. Note that in some instances, identifying the master row is insufficient. If a master row has several details, you also need to identify which detail is currently processed. For this purpose, read the CustomMasterRowEventArgs.RelationIndex property value.