从sql server 中读取二进制图片

/**//// <summary>
        /// 显示示带图片的记录
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            string sql = "";
            sql = "SELECT OrName,OrTel, Orimage FROM Organize  WHERE OrID = 1"; //
            SqlConnection conn = new SqlConnection(DBConnectioin.conStr);          
            SqlCommand cmd = new SqlCommand(sql, conn);
            conn.Open();
            SqlDataReader reader = cmd.ExecuteReader();
            reader.Read();
            this.textBox1.Text =(string) reader["OrName"];
            textBox2.Text = (string)reader["OrTel"];
            MemoryStream ms = new MemoryStream((byte[])reader["Orimage"]);
            Image image = Image.FromStream(ms, true);
            reader.Close();
            conn.Close();
            pictureBox1.Image = image;
        }