อยากทราบการเอารูปจาก PictureBox Save to DB C# อยากทราบว่าเราต้องเขียน Code อย่างไรครับ

BinaryReader BinaryRead = new BinaryReader(FileUpload1.PostedFile.InputStream); 
byte[] BinaryData = BinaryRead.ReadBytes(FileUpload1.PostedFile.ContentLength); 

byte[] imageBytes = (byte[])Dt.Rows[0]["BinaryData"];

        private  void DisplayImage(string ImagePath)
        {
            byte[] imageBytes = Security.DecryptStream(ImagePath, SecretKey);
 
            Image myImage  = Image.FromStream(new MemoryStream(imageBytes));
            Size fitImageSize = ScaledImageDimensions(myImage.Width, myImage.Height, PictureBox1.Width, PictureBox1.Height);
            Bitmap imgOutput = new Bitmap(myImage, fitImageSize.Width, fitImageSize.Height);
 
            PictureBox1.Image = null;
            PictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
            PictureBox1.Image = imgOutput;
        }

        private Size ScaledImageDimensions(int currentImageWidth, int currentImageHeight, int desiredImageWidth, int desiredImageHeight)
        {
            /* First, we must calculate a multiplier that will be used
             * to get the dimensions of the new, scaled image. */

            double scaleImageMultiplier = 0;

            /* This multiplier is defined as the ratio of the

             * Desired Dimension to the Current Dimension.
             * Specifically which dimension is used depends on the larger
             * dimension of the image, as this will be the constraining dimension
             * when we fit to the window. */

            /* Determine if Image is Portrait or Landscape. */    
            if (currentImageHeight > currentImageWidth) /* Image is Portrait */
            {
                /* Calculate the multiplier based on the heights. */
                if (desiredImageHeight > desiredImageWidth)
                {
                    scaleImageMultiplier = (double)desiredImageWidth / (double)currentImageWidth;
                }
                else
                {
                    scaleImageMultiplier = (double)desiredImageHeight / (double)currentImageHeight;
                }
            }
            else /* Image is Landscape */
            {
                /* Calculate the multiplier based on the widths. */
                if (desiredImageWidth > desiredImageHeight)
                {
                    scaleImageMultiplier = (double)desiredImageWidth / (double)currentImageWidth;
                }
                else
                {
                    scaleImageMultiplier = (double)desiredImageHeight / (double)currentImageHeight;
                }
            }

            /* Generate and return the new scaled dimensions.

             * Essentially, we multiply each dimension of the original image
             * by the multiplier calculated above to yield the dimensions
             * of the scaled image. The scaled image can be larger or smaller
             * than the original. */

            int outputWidth = (int)(currentImageWidth * scaleImageMultiplier);
            int outputHight = (int)(currentImageHeight * scaleImageMultiplier);

            return new Size((currentImageWidth > outputWidth) ? outputWidth : currentImageWidth, (currentImageHeight > outputHight) ? outputHight : currentImageHeight);
        }