GridView.ExpandMasterRow(Int32, Int32) Method

Expands the specified detail View, which is identified by its master row and relationship index.

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v19.1.dll

Declaration

C#

public void ExpandMasterRow(
    int rowHandle,
    int relationIndex
)

VB.NET

Public Sub ExpandMasterRow(
    rowHandle As Integer,
    relationIndex As Integer
)

Parameters

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

Remarks

The ExpandMasterRow method expands the specified master row and this makes the specified detail visible. If the master row is already expanded this method selects the specified detail. The ExpandMasterRow method can be used as an alternative to the GridView.SetMasterRowExpanded method which requires an additional parameter that specifies how the row’s expanded state should be changed.

Before a master row is expanded, the GridView.MasterRowExpanding event is raised. If the event handler prohibits the row from being expanded, the ExpandMasterRow method does nothing. If the row has been expanded, the GridView.MasterRowExpanded event is raised.

Please refer to the Master-Detail Relationships topic for additional information.

Note

Detail pattern Views do not contain data and they are never displayed within XtraGrid. So, the ExpandMasterRow member must not be invoked for these Views. The ExpandMasterRow 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.