MasterRowGetRelationCountEventArgs.RelationCount Property

Gets or sets the number of relations for the master row.

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v19.1.dll

Declaration

C#

public int RelationCount { get; set; }

VB.NET

Public Property RelationCount As Integer

Property Value

Type	Description
Int32	An integer value specifying the number of relations for the master row.

Remarks

Initially, the RelationCount property contains the default number of relations specified by the grid control’s data source. You can change this value to specify your own number of relations. For instance, you can provide detail data manually by handling the GridView.MasterRowGetChildList event while the data source actually has no detail data. To do so, set the RelationCount to a positive value specifying the number of details for the current row. In this case, the GridView.MasterRowEmpty and GridView.MasterRowGetRelationName events will also be raised for each row the number of times specified by the relation number.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the RelationCount property.

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-detail-views-under-each-other-e259/CS/DetailsUnderEachOther/Form1.cs#L45

private void gvMaster_MasterRowGetRelationCount(object sender, DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs e) {
    e.RelationCount = 1;
}

a-master-detail-grid-with-entity-framework-objects-e417/CS/CS/Entities/Form1.cs#L31

private void gridView1_MasterRowGetRelationCount(object sender, DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs e) {
    e.RelationCount = 1;
}

how-to-display-ef-objects-in-a-grid-within-master-detail-mode-when-entities-have-many-to-man-e2766/CS/Entities/Form1.cs#L23

private void OnMasterRowGetRelationCount(object sender, DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs e) {
    e.RelationCount = 1;
}

how-to-display-additional-field-values-at-the-detail-level-e931/CS/Form1.cs#L174

{
    e.RelationCount = 1;
}

how-to-dynamically-load-and-refresh-detail-data-from-the-database-e1173/CS/WindowsApplication297/Form1.cs#L81

private void gridView1_MasterRowGetRelationCount(object sender, DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs e) {
    e.RelationCount = 1;
}

VB.NET

how-to-display-detail-views-under-each-other-e259/VB/DetailsUnderEachOther/Form1.vb#L47

Private Sub gvMaster_MasterRowGetRelationCount(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs) Handles gvMaster.MasterRowGetRelationCount
    e.RelationCount = 1
End Sub

a-master-detail-grid-with-entity-framework-objects-e417/VB/CS/Entities/Form1.vb#L32

Private Sub gridView1_MasterRowGetRelationCount(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs) Handles gridView1.MasterRowGetRelationCount
    e.RelationCount = 1
End Sub

how-to-display-ef-objects-in-a-grid-within-master-detail-mode-when-entities-have-many-to-man-e2766/VB/Entities/Form1.vb#L25

Private Sub OnMasterRowGetRelationCount(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs) Handles gridView1.MasterRowGetRelationCount
    e.RelationCount = 1
End Sub

how-to-display-additional-field-values-at-the-detail-level-e931/VB/Form1.vb#L154

Private Sub gridView1_MasterRowGetRelationCount(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs) Handles gridView1.MasterRowGetRelationCount
    e.RelationCount = 1
End Sub

how-to-dynamically-load-and-refresh-detail-data-from-the-database-e1173/VB/WindowsApplication297/Form1.vb#L90

Private Sub gridView1_MasterRowGetRelationCount(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Grid.MasterRowGetRelationCountEventArgs) Handles gridView1.MasterRowGetRelationCount
    e.RelationCount = 1
End Sub