Code:
FileStream obj = new FileStream(System.Convert.ToString(row.Cells["Lec_media"].Value), FileMode.Open, FileAccess.Read, FileShare.Read);
                

 
 if (Startdate2 == JCM_NOW2)
                {
                    if (checkBox1.Checked == true)
                    {

                        try
                        {


                            obj
...