GridView.IsMasterRowEmptyEx(Int32, Int32) Method
Indicates whether a particular master row’s detail View is empty.
public virtual bool IsMasterRowEmptyEx( int rowHandle, int relationIndex )
Public Overridable Function IsMasterRowEmptyEx( rowHandle As Integer, relationIndex As Integer ) As Boolean
An integer value identifying the tested master row by its handle.
A zero-based integer specifying the index of the relationship in the data source.
true if the specified detail View has no data; otherwise, false.
Note that the method does not only depend on actual presence of data within a particular detail. If the master View’s GridOptionsDetail.EnableMasterViewMode option is disabled, the method returns false regardless of whether the detail is actually empty. In addition, the method raises the GridView.MasterRowEmpty event so that you can manually specify the presence of data within particular details.
If the View has a single detail, it is more convenient to use the GridView.IsMasterRowEmpty method.
Detail pattern Views do not contain data and they are never displayed within XtraGrid. So, the IsMasterRowEmptyEx member must not be invoked for these Views. The IsMasterRowEmptyEx member can only be used with real Views that are displayed within the Grid Control. The real Views with which an end-user interacts at runtime can be accessed using the following methods.
- GridControl.MainView - returns the top most View in a grid;
- GridControl.FocusedView - returns the focused View;
- GridControl.DefaultView - returns the currently maximized View;
- the sender parameter of View specific events;
- GridView.GetDetailView - returns a detail clone View for a specific master row.