datagridView1.Rows.Add to a log file

Question

I'm searching for information about to send all Info of the datagridview to a log file
mine datagridview code is as follow:
dataGridView1.Rows.Add(listBox1.Items[m].ToString(), count,+ ts.Days+"d"+ts.Hours+"h"+ts.Minutes+"M"+ts.Seconds+"sec", count * a * a, DateTime.Now.ToString());
                        
this datagridview is updated every second and it need to add in the log file.