how to save image into sql Database using c# windows application

  SqlConnection cn = new SqlConnection("data source=localhost;initial catalog=notitest;user id=sa;password=cos123");
  cn.Open();
  SqlCommand cmd = new SqlCommand("insert imgtest values(" + textBox1.Text + ",'" + ImageToBase64(pictureBox1.Image,
System.Drawing.Imaging.ImageFormat.Png) + "')", cn);
  SqlDataReader dr = cmd.ExecuteReader();
  cn.Close();

SqlConnection cn = new SqlConnection("data source=localhost;initial catalog=notitest;user id=sa;password=cos123");
cn.Open();
SqlCommand cmd = new SqlCommand("select * from imgtest", cn);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
    textBox2.Text = dr[0].ToString();
    pictureBox2.Image = Base64ToImage(dr[1].ToString());
}
cn.Close();

public string ImageToBase64(Image image,
          System.Drawing.Imaging.ImageFormat format)
        {
            using (MemoryStream ms = new MemoryStream())
            {
                // Convert Image to byte[]
                image.Save(ms, format);
                byte[] imageBytes = ms.ToArray();

                // Convert byte[] to Base64 String
                string base64String = Convert.ToBase64String(imageBytes);
                return base64String;
            }
        }

        public Image Base64ToImage(string base64String)
        {
            // Convert Base64 String to byte[]
            byte[] imageBytes = Convert.FromBase64String(base64String);
            MemoryStream ms = new MemoryStream(imageBytes, 0,
              imageBytes.Length);

            // Convert byte[] to Image
            ms.Write(imageBytes, 0, imageBytes.Length);
            Image image = Image.FromStream(ms, true);
            return image;
        }