public bool IsEmpty { get; set; }

Public Property IsEmpty As Boolean

private void gvMaster_MasterRowEmpty(object sender, DevExpress.XtraGrid.Views.Grid.MasterRowEmptyEventArgs e) {
    e.IsEmpty = false;
}

Product p = (Product)gridView1.GetRow(e.RowHandle);
    e.IsEmpty = p.Order_Details.Count == 0;
}

private void gridView1_MasterRowEmpty(object sender, DevExpress.XtraGrid.Views.Grid.MasterRowEmptyEventArgs e) {
    e.IsEmpty = false;
}

private void gridView1_MasterRowEmpty(object sender, MasterRowEmptyEventArgs e) {
    e.IsEmpty = false;
}

Private Sub gvMaster_MasterRowEmpty(ByVal sender As Object, ByVal e As MasterRowEmptyEventArgs)
    e.IsEmpty = False
End Sub

Dim p As Product = CType(gridView1.GetRow(e.RowHandle), Product)
    e.IsEmpty = p.Order_Details.Count = 0
End Sub

Private Sub gridView1_MasterRowEmpty(ByVal sender As Object, ByVal e As MasterRowEmptyEventArgs)
    e.IsEmpty = False
End Sub

Private Sub gridView1_MasterRowEmpty(ByVal sender As Object, ByVal e As MasterRowEmptyEventArgs) Handles gridView1.MasterRowEmpty
    e.IsEmpty = False
End Sub