GridView.IsMasterRowEmptyEx(Int32, Int32) Method

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

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v19.2.dll

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 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.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the IsMasterRowEmptyEx(Int32, Int32) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-display-only-rows-with-non-empty-details-e465/CS/WindowsApplication28/Form1.cs#L45

int rowHandle = view.GetRowHandle(e.ListSourceRow);
e.Visible = !view.IsMasterRowEmptyEx(rowHandle, view.GetRelationIndex(rowHandle, "Detail"));
e.Handled = true;

VB.NET

how-to-display-only-rows-with-non-empty-details-e465/VB/WindowsApplication28/Form1.vb#L41

Dim rowHandle As Integer = view.GetRowHandle(e.ListSourceRow)
e.Visible = Not view.IsMasterRowEmptyEx(rowHandle, view.GetRelationIndex(rowHandle, "Detail"))
e.Handled = True