[RESOLVED] win Forms -DataGrid Reset Current Cell to 0 on Checkbox changed

http://i56.tinypic.com/2qa2qmv.jpg

basically i m looking for if i click on my checkbox ,it should reset my datagrid column lastseqno to 0.

is it possible

vb Code:

foreach (DataGridViewRow dgv in dGVNewSeries.Rows)
                    {
                        dgv.Cells["LASTSEQNO"].Value = 0;
 
                    }
//Second Method
                    for (int i = 0; i <= dGVNewSeries.Rows.Count - 1; i++)
                    {
                        if (dGVNewSeries.Rows[i].Cells["LASTSEQNO"].Value.ToString().Length != 0)
                        {
                            dGVNewSeries.Rows[i].Cells["LASTSEQNO"].Value = 0;
                        }
                    }
 
 If Chkboxl.Checked = True Then
        For Each dr As DataGridViewRow In YourDataGridView.Rows
          dr.Cells("lastseqno").Value = 0
        Next
      End If