How to hide a range of rows and columns in WinForms GridGroupingControl?

// to hide range of rows
private void buttonAdv1_Click(object sender, EventArgs e)
{
   // range of rows to hide
   int n = 3;
   // the count will be taken from caption and header rows (n +2)
   GridRowHidden[] hiddenrows = new GridRowHidden[n + 2];
   for(int i = 0; i < n + 2; i++)
   {
      hiddenrows[i] = new GridRowHidden(i + 1);
   }
   this.gridGroupingControl1.TableControl.Model.RowHiddenEntries.AddRange(hiddenrows);
}

// to hide range of columns
private void button1_Click(object sender, EventArgs e)
{
   // range of column to hide
   int n = 3;
   GridColHidden[] hiddenCols = new GridColHidden[n];
   for(int i = 0; i < n ; i++)
   {
      hiddenCols[i] = new GridColHidden(i + 1);
   }
   this.gridGroupingControl1.TableControl.Model.ColHiddenEntries.AddRange(hiddenCols);
}

'to hide range of rows
Private Sub buttonAdv1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles buttonAdv1.Click
   'range of rows to hide
   Dim n As Integer = 3
   'the count will be taken from caption and header rows (n +2)
   Dim hiddenrows(n + 2 - 1) As GridRowHidden
   For i As Integer = 0 To n + 2 - 1
       hiddenrows(i) = New GridRowHidden(i + 1)
   Next i
   Me.gridGroupingControl1.TableControl.Model.RowHiddenEntries.AddRange(hiddenrows)
End Sub

'to hide range of columns
Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles button1.Click
   'range of column to hide
   Dim n As Integer = 3
   Dim hiddenCols(n - 1) As GridColHidden
   For i As Integer = 0 To n - 1
      hiddenCols(i) = New GridColHidden(i + 1)
   Next i
   Me.gridGroupingControl1.TableControl.Model.ColHiddenEntries.AddRange(hiddenCols)
End Sub