C# を使用して画像をデータベースに保存するにはどうすればよいですか?

using System.Drawing;
using System.Drawing.Imaging;
using System.Data;

public static void PersistImage(string path, IDbConnection connection)
{
    using (var command = connection.CreateCommand ())
    {
        Image img = Image.FromFile (path);
        MemoryStream tmpStream = new MemoryStream();
        img.Save (tmpStream, ImageFormat.Png); // modify to desired format
        tmpStream.Seek (0, SeekOrigin.Begin);
        byte[] imgBytes = new byte[MAX_IMG_SIZE];
        tmpStream.Read (imgBytes, 0, MAX_IMG_SIZE);

        command.CommandText = "INSERT INTO images(payload) VALUES (:payload)";
        IDataParameter par = command.CreateParameter();
        par.ParameterName = "payload";
        par.DbType = DbType.Binary;
        par.Value = imgBytes;
        command.Parameters.Add(par);
        command.ExecuteNonQuery ();
    }
}