save & retrieve images in/from mysql windows app

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C#

Hello..
I want to save/fetch image from picturebox/mysql to mysql/picturebox
I'm able to store the image into mysql. Lemme tel u one thing is, after saving i checked that image is saving in bytes format. Moreover im unable to fetch it back.

What i did to fetch the image is ..

con.Open();
            MySqlCommand da=new MySqlCommand("select smn_pho from smn where smn_nme='testing'",con);
            MySqlDataReader ds = da.ExecuteReader();
            DataTable dt = new DataTable();
            dt.Load(ds);
using (MemoryStream ms = new MemoryStream((byte[])dt.Rows[0]["smn_pho"]))
        {
            ms.Position = 0;
            ms.Seek(0, SeekOrigin.Begin);
            pictureBox2.Image = System.Drawing.Image.FromStream(ms);//Throwing error at this location as Parameter not found...
            ms.Flush();
            ms.Close();
        }