How to copy and paste the selected records data into excel sheet in WinForms GridGroupingControl?

private void TableModel_ClipboardCopy(object sender, GridCutPasteEventArgs e)
{
    this.CopySelectedRecords(false);
    e.Handled = true;
}
private void CopySelectedRecords(bool cut)
{
    string s = "";
    //Copying visible column names to the string buffer.
    foreach (GridVisibleColumnDescriptor cd in this.gridGroupingControl1.TableDescriptor.VisibleColumns)
    {
        int index = this.gridGroupingControl1.TableDescriptor.VisibleColumns.IndexOf(cd);
        if (index != 0)
        {
            s += "\t";
        }
        s += cd.Name;
    }
    s += Environment.NewLine;
    //Copying the selected records.
    if (this.gridGroupingControl1.Table.SelectedRecords.Count > 0)
    {
        //Selection is made in the parent table
        foreach (SelectedRecord selRec in this.gridGroupingControl1.Table.SelectedRecords)
        {
            s = CopySelectedRecordsToBuffer(s, selRec.Record, gridGroupingControl1.TableDescriptor, cut);
        }
    }
    else
    {
        //Selection is made in the child table.
        s = "";
        GridTable child = gridGroupingControl1.GetTable("MarkSheet");
        if (child.SelectedRecords.Count > 0)
        {
            //Copying visible column names of the child table into the string buffer.
            foreach (GridVisibleColumnDescriptor cd in child.TableDescriptor.VisibleColumns)
            {
                int index = child.TableDescriptor.VisibleColumns.IndexOf(cd);
                if (index != 0)
                {
                    s += "\t";
                }
                s += cd.Name;
            }
            s += Environment.NewLine;
            foreach (SelectedRecord r in child.SelectedRecords)
            {
                s = CopySelectedRecordsToBuffer(s, r.Record, child.TableDescriptor, cut);
            }
        }
    }
    Clipboard.SetDataObject(new DataObject(s), true);
}

Private Sub TableModel_ClipboardCopy(ByVal sender As Object, ByVal e As GridCutPasteEventArgs)
        Me.CopySelectedRecords(False)
        e.Handled = True
End Sub
Private Sub CopySelectedRecords(ByVal cut As Boolean)
        Dim s As String = ""
        'Copying visible column names to the string buffer.
        For Each cd As GridVisibleColumnDescriptor In Me.gridGroupingControl1.TableDescriptor.VisibleColumns
            Dim index As Integer = Me.gridGroupingControl1.TableDescriptor.VisibleColumns.IndexOf(cd)
                If index <> 0 Then
                    s &= Constants.vbTab
                End If
                    s &= cd.Name
                    Next cd
                    s &= Environment.NewLine
        'Copying the selected records.
        If Me.gridGroupingControl1.Table.SelectedRecords.Count > 0 Then
            'Selection is made in the parent table
            For Each selRec As SelectedRecord In Me.gridGroupingControl1.Table.SelectedRecords
                s = CopySelectedRecordsToBuffer(s, selRec.Record, gridGroupingControl1.TableDescriptor, cut)
                Next selRec
        Else
            'Selection is made in the child table.
                s = ""
                Dim child As GridTable = gridGroupingControl1.GetTable("MarkSheet")
                If child.SelectedRecords.Count > 0 Then
                    'Copying visible column names of the child table into the string buffer.
                    For Each cd As GridVisibleColumnDescriptor In child.TableDescriptor.VisibleColumns
                        Dim index As Integer = child.TableDescriptor.VisibleColumns.IndexOf(cd)
                            If index <> 0 Then
                                s &= Constants.vbTab
                            End If
                            s &= cd.Name
                            Next cd
                            s &= Environment.NewLine
                            For Each r As SelectedRecord In child.SelectedRecords
                                    s = CopySelectedRecordsToBuffer(s, r.Record, child.TableDescriptor, cut)
                                    Next r
                End If
        End If
        Clipboard.SetDataObject(New DataObject(s), True)
End Sub