How to select the first row by using arrow key when the current selection is in last row and viceversa of WinForms GridListControl?

//Sets the CellType and data source for gridlistcontrol.
this.gridGroupingControl1.TableDescriptor.Columns[3].Appearance.AnyRecordFieldCell.CellType = GridCellTypeName.GridListControl;    
this.gridGroupingControl1.TableDescriptor.Columns[3].Appearance.AnyRecordFieldCell.DataSource = countries;            
this.gridGroupingControl1.TableDescriptor.Columns[3].Appearance.AnyRecordFieldCell.ValueMember = "CountryCode";
//Hooks the event in TableControl_CurrentCellShowingDropDown event
this.gridGroupingControl1.TableControlCurrentCellKeyDown += gridGroupingControl1_TableControlCurrentCellKeyDown;
void gridGroupingControl1_TableControlCurrentCellKeyDown(object sender, Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlKeyEventArgs e)
{
    //Gets the Currentcell rendere as the drop down gridlistcontrol renderer.
    GridDropDownGridListControlCellRenderer rend = e.TableControl.CurrentCell.Renderer as GridDropDownGridListControlCellRenderer;
    if (rend != null)
    {
        GridControl grid = rend.ListControlPart.Grid as GridControl;
        if (e.Inner.KeyCode == Keys.Down)
        {
            if (grid.CurrentCell.HasCurrentCellAt(grid.RowCount))
            {
                //Moves the selection to first record.
                grid.CurrentCell.MoveTo(GridRangeInfo.Row(0));
            }
        }
        if (e.Inner.KeyCode == Keys.Up)
        {
            if (!grid.CurrentCell.IsActive)
                grid.CurrentCell.MoveTo(1, 0);
            if (grid.CurrentCell.HasCurrentCellAt(1))
            {
                //moves the selection to last record.
                grid.CurrentCell.MoveTo(GridRangeInfo.Row(grid.RowCount));
            }
        }
    }
}

'Sets the CellType and data source for gridlistcontrol
Me.gridGroupingControl1.TableDescriptor.Columns(3).Appearance.AnyRecordFieldCell.CellType = GridCellTypeName.GridListControl
Me.gridGroupingControl1.TableDescriptor.Columns(3).Appearance.AnyRecordFieldCell.DataSource = countries
Me.gridGroupingControl1.TableDescriptor.Columns(3).Appearance.AnyRecordFieldCell.ValueMember = "CountryCode"
'Hooks the event in TableControl_CurrentCellShowingDropDown event
Private Me.gridGroupingControl1.TableControlCurrentCellKeyDown += AddressOf gridGroupingControl1_TableControlCurrentCellKeyDown
Private Sub gridGroupingControl1_TableControlCurrentCellKeyDown(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlKeyEventArgs)
   'Gets the Currentcell rendere as the drop down gridlistcontrol renderer.
   Dim rend As GridDropDownGridListControlCellRenderer = TryCast(e.TableControl.CurrentCell.Renderer, GridDropDownGridListControlCellRenderer)
   If rend IsNot Nothing Then
      Dim grid As GridControl = TryCast(rend.ListControlPart.Grid, GridControl)
      If e.Inner.KeyCode = Keys.Down Then
         If grid.CurrentCell.HasCurrentCellAt(grid.RowCount) Then
            'Moves the selection to first record.
            grid.CurrentCell.MoveTo(GridRangeInfo.Row(0))
         End If
      End If
      If e.Inner.KeyCode = Keys.Up Then
         If Not grid.CurrentCell.IsActive Then
            grid.CurrentCell.MoveTo(1, 0)
         End If
         If grid.CurrentCell.HasCurrentCellAt(1) Then
            'moves the selection to last record.
            grid.CurrentCell.MoveTo(GridRangeInfo.Row(grid.RowCount))
         End If
      End If
   End If
End Sub