dataGridView选中行显示图片

//选中行显示图片        private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)        {            using (SqlConnection sql = new SqlConnection(sqlconfig))            {                string temp;                temp = this.dataGridView1.SelectedRows[0].Cells[0].Value.ToString();                SqlCommand cmd = new SqlCommand("select SerialCode,ImagePath from dbo.ScannedCorrectInfo ", sql);                sql.Open();                SqlDataReader dr = cmd.ExecuteReader();                while (dr.Read())                {                    if (dr[0].ToString() == temp)                    {                        pictureBox1.Image = System.Drawing.Image.FromFile(sDr + dr[1].ToString());                        break;                    }                }                           }        }