How to display image data in message box

SqlConnection cnn = new SqlConnection(@"Data Source=DANNY-PC\SQLEXPRESS;Initial Catalog=coba;Integrated Security=True;Pooling=False");
                byte[] imgData = File.ReadAllBytes(pictureBox1.ImageLocation);
                MessageBox.Show(Convert.ToString(imgData)); // How to display image data in message box?
                int varID = Convert.ToInt16(textBox1.Text);
                string varNama = textBox2.Text;
                SqlCommand cmd = new SqlCommand("INSERT INTO Table2 (ID,Nama,Foto) VALUES (@ID,@Nama,@Foto)", cnn);
                cmd.Parameters.Add("@ID", varID);
                cmd.Parameters.Add("@Nama", varNama);
                cmd.Parameters.Add("@Foto", imgData);
                cnn.Open();
                cmd.ExecuteNonQuery();
                cnn.Close();