cannot display image in data gridview

int i = 0;

dataGridView1.Rows.Clear();

cn.Open();

cmd = new SqlCommand("select *from tblNewStudentEntry where status like 'Active'", cn);

dr = cmd.ExecuteReader();

while (dr.Read())

{

i++;

dataGridView1.Rows.Add(i, dr["academicyear"].ToString(), dr["currentglevel"].ToString(), dr["strand"].ToString(), dr["section"].ToString(), dr["lrn"].ToString(), dr["Photo"].ToString(), dr["lname"].ToString(), dr["fname"].ToString(), dr["mname"].ToString(),DateTime.Parse( dr["bdate"].ToString()).ToShortDateString(), dr["age"].ToString(), dr["birthplace"].ToString(), dr["studcontactno"].ToString(), dr["gender"].ToString());

}

dr.Close();

cn.Close();