GridView.IsMasterRowEmptyEx(Int32, Int32) Method

Indicates whether a particular master row’s detail View is empty.

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v23.2.dll

NuGet Packages: DevExpress.Win.Grid, DevExpress.Win.Navigation

Declaration

C#

public virtual bool IsMasterRowEmptyEx(
    int rowHandle,
    int relationIndex
)

VB.NET

Public Overridable Function IsMasterRowEmptyEx(
    rowHandle As Integer,
    relationIndex As Integer
) As Boolean

Parameters

Name	Type	Description
rowHandle	Int32	An integer value identifying the tested master row by its handle.
relationIndex	Int32	A zero-based integer specifying the index of the relationship in the data source.

Returns

Type	Description
Boolean	true if the specified detail View has no data; otherwise, false.

Remarks

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.

Note

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 Views that display real data within the Grid Control. Use the following methods to access these Views with which an end user interacts at runtime.

• 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.