C# System.Drawing.Bitmap.SetResolution方法代码示例

        public System.Drawing.Bitmap ToBitmap()
        {
            #if WindowsCE
             var bmp = new System.Drawing.Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
             var bmpData = bmp.LockBits(
            new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height),
            System.Drawing.Imaging.ImageLockMode.WriteOnly,
            System.Drawing.Imaging.PixelFormat.Format32bppRgb);
            #else
             var bmp = new System.Drawing.Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
             bmp.SetResolution(96, 96);
             var bmpData = bmp.LockBits(
            new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height),
            System.Drawing.Imaging.ImageLockMode.WriteOnly,
            System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            #endif
             try
             {
            //Copy the data from the byte array into BitmapData.Scan0
            System.Runtime.InteropServices.Marshal.Copy(Pixels, 0, bmpData.Scan0, Pixels.Length);
             }
             finally
             {
            //Unlock the pixels
            bmp.UnlockBits(bmpData);
             }

             return bmp;
        }

            public string CropImage(int x, int y, int w, int h, string imagePath)
            {
                var pathImage = Server.MapPath(imagePath);
                Image img = Image.FromFile(pathImage);
                Bitmap newBitmap = null;
                using (System.Drawing.Bitmap _bitmap = new System.Drawing.Bitmap(w, h))
                {
                    _bitmap.SetResolution(img.HorizontalResolution, img.VerticalResolution);
                    using (Graphics _graphic = Graphics.FromImage(_bitmap))
                    {
                        _graphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        _graphic.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                        _graphic.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
                        _graphic.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

                        _graphic.DrawImage(img, 0, 0, w, h);
                        _graphic.DrawImage(img, new Rectangle(0, 0, w, h), x, y, w, h, GraphicsUnit.Pixel);
                    }
                    var objImg = _bitmap.Clone();
                    newBitmap = (Bitmap)objImg;

                }
                var fileName = Path.GetFileNameWithoutExtension(imagePath) + "_Cropped" + Path.GetExtension(imagePath);
                newBitmap.Save(Server.MapPath("/Uploads/Temp/") + fileName, System.Drawing.Imaging.ImageFormat.Jpeg);
                return fileName;
            }

        private void Image_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            image.ReleaseMouseCapture();
           // Get actual rectangle
            if( selectBox.Visibility != Visibility.Visible)
                return;

            Vector imageOffset = VisualTreeHelper.GetOffset(image);
            double visualLeft = Canvas.GetLeft( selectBox );
            double visualTop = Canvas.GetTop(selectBox);

            double width = selectBox.Width;
            double height = selectBox.Height;

            BitmapSource bmpSource = image.Source as BitmapSource;

            double scaleX = bmpSource.PixelWidth / image.ActualWidth;
            double scaleY = bmpSource.PixelHeight / image.ActualHeight;

            double newWidth = width * scaleX;
            double newHeight = height * scaleY;

            double newX = (visualLeft - imageOffset.X) * scaleX;
            double newY = (visualTop - imageOffset.Y) * scaleY;


            System.Drawing.Bitmap src = System.Drawing.Image.FromFile(_sourceFile) as System.Drawing.Bitmap;
            var target = new System.Drawing.Bitmap((int)newWidth, (int)newHeight);
            target.SetResolution(src.HorizontalResolution, src.VerticalResolution);

            using (var g = System.Drawing.Graphics.FromImage(target))
            {
                var rect = new System.Drawing.Rectangle((int)newX, (int)newY, (int)newWidth, (int)newHeight);
                g.DrawImage(src, new System.Drawing.Rectangle(0, 0, target.Width, target.Height),
                                 rect,
                                 System.Drawing.GraphicsUnit.Pixel);
            }

           


            RegionSelectedEventArgs ev = new RegionSelectedEventArgs(new Rect(newX, newY, newWidth, newHeight), target);
            OnRegionSelected(ev);

            selectBox.Visibility = Visibility.Hidden;
        }

        private System.Drawing.Bitmap Dothumb(System.Drawing.Image imgPhoto, int Width, int Height)
        {
            int sourceWidth = imgPhoto.Width;
            int sourceHeight = imgPhoto.Height;
            int sourceX = 0;
            int sourceY = 0;
            int destX = 0;
            int destY = 0;

            float nPercent = 0;
            float nPercentW = 0;
            float nPercentH = 0;

            nPercentW = ((float)Width / (float)sourceWidth);
            nPercentH = ((float)Height / (float)sourceHeight);
            if (nPercentH < nPercentW)
            {
                nPercent = nPercentH;
                destX = System.Convert.ToInt16((Width - (sourceWidth * nPercent)) / 2);
            }
            else
            {
                nPercent = nPercentW;
                destY = System.Convert.ToInt16((Height - (sourceHeight * nPercent)) / 2);
            }

            int destWidth = (int)(sourceWidth * nPercent);
            int destHeight = (int)(sourceHeight * nPercent);

            System.Drawing.Bitmap bmPhoto = new System.Drawing.Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
            bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);

            System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(bmPhoto);
            grPhoto.Clear(System.Drawing.Color.Red);
            grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

            grPhoto.DrawImage(imgPhoto, new System.Drawing.Rectangle(destX, destY, destWidth, destHeight),
                new System.Drawing.Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
                System.Drawing.GraphicsUnit.Pixel);

            grPhoto.Dispose();
            return bmPhoto;
        }

        /// <summary>
        /// Saves cards with QSO info as JPEGs for photo printing
        /// </summary>
        /// <param name="startNumber">largest number (nnn) in file names QSLnnn.jpeg in print directory before printing starts</param>
        /// <param name="directoryName">path to directory that JPEG files are to be written to</param>
        /// <exception>DirectoryNotFoundException when directory has been deleted between time directory was selected and attempt
        /// to create or write file.</exception>
        /// <exception>SecurityException when user does not permission to access the directory or file (e.g. write permission on directory.</exception>
        /// <exception>IOException for an IO error</exception>
        /// <exception>PathTooLongException when the directory is longer than 248 characters, or filename is longer than 260 characters.</exception>
        /// <exception>Several others that definitely should never occur.</exception>
        private void SaveCardsAsJpegsForPrinting(int startNumber, string directoryName)
        {
            CardTabItem cti = mainTabControl.SelectedItem as CardTabItem;
            if(cti != null)
            {
                //create a list of QSOs for each card
                List<List<DispQso>> qsos = qsosView.DisplayQsos.GetDispQsosList(cti.cardPanel.QslCard);
                // now create file for each card
                for(int cardNum = 0; cardNum < qsos.Count; cardNum++)
                {
                    CardWF card = cti.cardPanel.QslCard.Clone();
                    card.IsInDesignMode = false;
                    FormsCardView cView = new FormsCardView(card);
                    // inform user of progress
                    StatusText.Text = "Creating card " + (cardNum+1) + " of " + qsos.Count;
                    StatusText.InvalidateVisual();
                    ForceUIUpdate();
                    // create the card and render it
                    float scale = (float)300F / 100.0F;
                    int bitmapWidth = (int)((float)card.Width * scale);
                    int bitmapHeight = (int)((float)card.Height * scale);
                    System.Drawing.Bitmap bitmap =
                        new System.Drawing.Bitmap(bitmapWidth, bitmapHeight);
                    bitmap.SetResolution(300F, 300F);
                    System.Drawing.Graphics graphics =
                        System.Drawing.Graphics.FromImage(bitmap);
                    graphics.ScaleTransform(scale, scale);
                    cView.PaintCard(graphics, qsos[cardNum], 96F / 300F);
                    graphics.Dispose();
                    string fileName = directoryName + "\\Qsl" +
                        (startNumber + cardNum + 1) + ".jpg";
                    bitmap.Save(fileName, System.Drawing.Imaging.ImageFormat.Jpeg);
                    bitmap.Dispose();

                    // force garbage collection to prevent Out of Memory exception
                    if(cardNum % 50 == 0)
                    {
                        System.GC.WaitForPendingFinalizers();
                        System.GC.Collect();
                    }
                }
                // tell user that all cards are created
                StatusText.Text = qsos.Count + " of " + qsos.Count + " cards created in directory: "
                    + directoryName;
            }
        }

        /// <summary>
        /// Save a card as JPEG file
        /// </summary>
        /// <param name="fileName">path to the file to save</param>
        /// <param name="resolution">image resolution</param>
        /// <param name="quality">image quality</param>
        /// <param name="showQsos">Boolean to indicate whether the card should include QSO info</param>
        private void SaveCardAsJpeg(string fileName, int resolution, int quality,
		                            bool showQsos)
        {
            // create visual of the card
            CardTabItem cti = mainTabControl.SelectedItem as CardTabItem;
            if(cti != null)
            {
                CardWF card = cti.cardPanel.QslCard.Clone();
                card.IsInDesignMode = false;
                FormsCardView cView = new FormsCardView(card);
                List<List<DispQso>> dispQsos = new List<List<DispQso>>();
                if(card.QsosBox != null)
                {
                    if(qsosView.DisplayQsos.Count > 0 && showQsos)
                    {
                        dispQsos = qsosView.DisplayQsos.GetDispQsosList(card);
                    }
                }

                float scale = (float)resolution / 100.0F;
                int bitmapWidth = (int)((float)card.Width * scale);
                int bitmapHeight = (int)((float)card.Height * scale);
                System.Drawing.Bitmap bitmap =
                    new System.Drawing.Bitmap(bitmapWidth, bitmapHeight);
                bitmap.SetResolution(resolution, resolution);
                System.Drawing.Graphics graphics =
                    System.Drawing.Graphics.FromImage(bitmap);
                graphics.ScaleTransform(scale, scale);
                cView.PaintCard(graphics, dispQsos.Count > 0 ? dispQsos[0] : null,
                               96F / resolution);
                graphics.Dispose();

                System.Drawing.Imaging.ImageCodecInfo jpgEncoder =
                    GetEncoder(System.Drawing.Imaging.ImageFormat.Jpeg);
                System.Drawing.Imaging.Encoder qualityEncoder = System.Drawing.Imaging.Encoder.Quality;
                System.Drawing.Imaging.EncoderParameter encoderParameter =
                    new System.Drawing.Imaging.EncoderParameter(qualityEncoder, quality);
                System.Drawing.Imaging.EncoderParameters encoderParams =
                    new System.Drawing.Imaging.EncoderParameters(1);
                encoderParams.Param[0] = encoderParameter;
                bitmap.Save(fileName, jpgEncoder, encoderParams);
                bitmap.Dispose();
            }
        }

        /// <summary>
        /// Helper method that saves 4 Up Cards in a JPEG file
        /// </summary>
        /// <param name="fileName">name of file to store image in</param>
        /// <param name="resolution">Resolution to store the image at</param>
        /// <param name="incBorders">Boolean indicating whether card edges should be included</param>
        private void Save4UpAsJpeg(string fileName, float resolution, bool incBorders)
        {
            // create visual of the card
            // create the card and render it
            CardTabItem cti = mainTabControl.SelectedItem as CardTabItem;
            CardWF cardToSave = cti.cardPanel.QslCard;
            float scale = resolution / 100.0F;
            int bitmapWidth = (int)((float)cardToSave.Width * scale * 2);
            int bitmapHeight = (int)((float)cardToSave.Height * scale * 2);
            System.Drawing.Bitmap bitmap =
                new System.Drawing.Bitmap(bitmapWidth, bitmapHeight);
            bitmap.SetResolution(resolution, resolution);
            System.Drawing.Graphics graphics =
                System.Drawing.Graphics.FromImage(bitmap);
            graphics.ScaleTransform(scale, scale);
            for (int cardNo = 0; cardNo <= 3; cardNo++)
            {
                CardWF card = cardToSave.Clone();
                card.IsInDesignMode = false;
                card.CardPrintProperties.PrintCardOutlines = incBorders;
                FormsCardView cView = new FormsCardView(card);

                System.Drawing.Drawing2D.GraphicsState state = graphics.Save();
                float offX = (cardNo % 2 == 0) ? 0 : card.Width;
                float offY = (cardNo < 2) ? 0 : card.Height;
                graphics.TranslateTransform(offX, offY);
                cView.PaintCard(graphics, null, 96F / resolution);
                graphics.Restore(state);
            }
            graphics.Dispose();
            bitmap.Save(fileName, System.Drawing.Imaging.ImageFormat.Jpeg);
            bitmap.Dispose();
        }

 public byte[] ResizeImageFile(byte[] imageFile, int targetWidth, int targetHeight)
 {
     System.Drawing.Image original = System.Drawing.Image.FromStream(new System.IO.MemoryStream(imageFile));
     int targetH, targetW;
     // if it is too tall and tall and skinny
     if (original.Height > targetHeight && ((float)original.Height / (float)original.Width) > ((float)targetHeight / (float)targetWidth))
     {
         targetH = targetHeight;
         targetW = (int)(original.Width * ((float)targetHeight / (float)original.Height));
     }
     // if it is too wide
     else if (original.Width > targetWidth)
     {
         targetW = targetWidth;
         targetH = (int)(original.Height * ((float)targetWidth / (float)original.Width));
     }
     else // leave it as is
     {
         targetH = original.Height;
         targetW = original.Width;
     }
     System.Drawing.Image imgPhoto = System.Drawing.Image.FromStream(new System.IO.MemoryStream(imageFile));
     // Create a new blank canvas.  The resized image will be drawn on this canvas.
     System.Drawing.Bitmap bmPhoto = new System.Drawing.Bitmap(targetW, targetH, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
     bmPhoto.SetResolution(72, 72);
     System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(bmPhoto);
     grPhoto.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
     grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
     grPhoto.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
     grPhoto.DrawImage(imgPhoto, new System.Drawing.Rectangle(0, 0, targetW, targetH), 0, 0, original.Width, original.Height, System.Drawing.GraphicsUnit.Pixel);
     // Save out to memory and then to a file.  We dispose of all objects to make sure the files don't stay locked.
     System.IO.MemoryStream mm = new System.IO.MemoryStream();
     bmPhoto.Save(mm, System.Drawing.Imaging.ImageFormat.Jpeg);
     original.Dispose();
     imgPhoto.Dispose();
     bmPhoto.Dispose();
     grPhoto.Dispose();
     return mm.GetBuffer();
 }

        protected void btnUpload_Click(object sender, EventArgs e)
        {
            if(flUploadReplace.HasFile) {
                try {
                    Extension = flUploadReplace.FileName.Substring(flUpload.FileName.LastIndexOf(".") + 1);
                    Extension = "png";
                    var fileName = (Server.MapPath(Folder) + FileName + "." + Extension);

                    //flUpload.SaveAs(fileName);
                    lblUplderr.Text = "<br>File size: " +
                            flUploadReplace.PostedFile.ContentLength + " kb<br>" +
                            "Content type: " +
                            flUploadReplace.PostedFile.ContentType;

                    var upImage = System.Drawing.Image.FromStream(flUploadReplace.PostedFile.InputStream);
                    // Get height and width of current image
                    int currWidth = (int)upImage.Width;
                    int currHeight = (int)upImage.Height;

                    Int32 newWidth = ImgWidth;
                    float ratio = 0;
                    Int32 newHeight = 0;
                    ratio = (float)currWidth / (float)newWidth;
                    newHeight = (int)(currHeight / ratio);

                    var newBmp = new System.Drawing.Bitmap(newWidth, newHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                    newBmp.SetResolution(72, 72);
                    newBmp.MakeTransparent();
                    var newGraphic = System.Drawing.Graphics.FromImage(newBmp);

                    //newGraphic.Clear(Color.DarkRed);\

                    newGraphic.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                    newGraphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                    newGraphic.DrawImage(upImage, 0, 0, newWidth, newHeight);
                    newBmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);

                    newBmp.Dispose();
                    newGraphic.Dispose();

                    if(CreateSmallThumbnail) {
                        fileName = Server.MapPath(Folder) + "\\" + SmallThumbnailPrefix + FileName + "." + Extension;
                        newWidth = SmallThumbnailWidth;
                        ratio = (float)currWidth / (float)newWidth;
                        newHeight = (int)(currHeight / ratio);

                        newBmp = new System.Drawing.Bitmap(newWidth, newHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                        newBmp.SetResolution(72, 72);
                        newBmp.MakeTransparent();
                        newGraphic = System.Drawing.Graphics.FromImage(newBmp);

                        //newGraphic.Clear(Color.DarkRed);
                        newGraphic.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                        newGraphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        newGraphic.DrawImage(upImage, 0, 0, newWidth, newHeight);
                        newBmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);

                        newBmp.Dispose();
                        newGraphic.Dispose();

                    }

                    if(CreateMediumThumbnail) {
                        fileName = Server.MapPath(Folder) + "\\" + MediumThumbnailPrefix + FileName + "." + Extension;
                        newWidth = MediumThumbnailWidth;
                        ratio = (float)currWidth / (float)newWidth;
                        newHeight = (int)(currHeight / ratio);

                        newBmp = new System.Drawing.Bitmap(newWidth, newHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                        newBmp.SetResolution(72, 72);
                        newBmp.MakeTransparent();
                        newGraphic = System.Drawing.Graphics.FromImage(newBmp);

                        //newGraphic.Clear(Color.DarkRed);
                        newGraphic.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                        newGraphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        newGraphic.DrawImage(upImage, 0, 0, newWidth, newHeight);
                        newBmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);

                        newBmp.Dispose();
                        newGraphic.Dispose();

                    }

                    upImage.Dispose();

                    // resize
                    // thumb
                    // medium

                    ProcessRender();

                } catch(Exception ex) {
                    lblUplderr1.Text = "<br><font color=red>ERROR: " + ex.Message.ToString() + "</font>";
                }
            } else {
                lblUplderr1.Text = "<br><font color=red>ERROR: You have not specified a file.</font>";
            }
        }

        private System.Drawing.Bitmap Crop(string img, int width, int height, int x, int y)
        {
            try
            {
                    System.Drawing.Image image = System.Drawing.Image.FromFile(img);
                    System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                    bmp.SetResolution(80, 60);

                    System.Drawing.Graphics gfx = System.Drawing.Graphics.FromImage(bmp);
                    gfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                    gfx.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                    gfx.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
                    gfx.DrawImage(image, new System.Drawing.Rectangle(0, 0, width, height), x, y, width, height, System.Drawing.GraphicsUnit.Pixel);
                gfx.Dispose();
                image.Dispose();
                    return bmp;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return null;
            }
        }

        private void toolStripMenuItem1_Click(object sender, EventArgs e)
        {
            System.Drawing.Image img = CaptureActiveWindow();
            
            img.Save(@thefilename, System.Drawing.Imaging.ImageFormat.Jpeg); 
            //markus' tweet code
            Random random = new Random();
            int number = random.Next(0, 100);
            //string base64String;
            byte[] imageBytes;
           /* using (System.Drawing.Bitmap bm = new System.Drawing.Bitmap(thefilename))
            {
                using (MemoryStream ms = new MemoryStream())
                {
                    bm.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
                    base64String = Convert.ToBase64String(ms.ToArray());
                }
            }*/

            MemoryStream ms = new MemoryStream();

            using (System.Drawing.Bitmap bitmap = (System.Drawing.Bitmap)System.Drawing.Image.FromFile(thefilename))
            {
                using (System.Drawing.Bitmap newBitmap = new System.Drawing.Bitmap(bitmap))
                {
                    newBitmap.SetResolution(300, 300); //que?
                    newBitmap.Save(@thefilename_res, System.Drawing.Imaging.ImageFormat.Jpeg);

                    img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

                    imageBytes = ms.ToArray();
                }
            }

            

            TwitPic tw = new TwitPic();
            Debug.WriteLine("image/jpeg " + "image_ " + number + " " + thefilename_res + " " + "f1df26cd49afe58d92fff17cdd1c94bf " + "494611009-ybbVnZ9ThmVUhN65QvH0x2l48BcXUtF0pNG8AUq4 " + "YZ2eGUbGnYz1ratWweQD1fpK1JuxAUtJ4nIZBA1Y " + "cflG9inzlNltp2Znw5zEWA " + "CDS4bQi9NRdRRBGR4Am1skJNRonHbGrsBFwUmpk ");
            string upload_script = tw.UploadPhoto(imageBytes, "image/jpeg", "image_" + number, thefilename_res, "f1df26cd49afe58d92fff17cdd1c94bf", "494611009-ybbVnZ9ThmVUhN65QvH0x2l48BcXUtF0pNG8AUq4", "YZ2eGUbGnYz1ratWweQD1fpK1JuxAUtJ4nIZBA1Y", "cflG9inzlNltp2Znw5zEWA", "CDS4bQi9NRdRRBGR4Am1skJNRonHbGrsBFwUmpk").ToString();
            Debug.WriteLine("Result of upload_script =" + upload_script);



        }

        public static System.Drawing.Image resizeImage(System.Drawing.Image imgPhoto, int Percent)
        {
            float nPercent = ((float)Percent / 100);

            int sourceWidth = imgPhoto.Width;
            int sourceHeight = imgPhoto.Height;
            int sourceX = 0;
            int sourceY = 0;

            int destX = 0;
            int destY = 0;
            int destWidth = (int)(sourceWidth * nPercent);
            int destHeight = (int)(sourceHeight * nPercent);

            System.Drawing.Bitmap bmPhoto = new System.Drawing.Bitmap(destWidth, destHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
            bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);

            System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(bmPhoto);
            grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

            grPhoto.DrawImage(imgPhoto,
                new System.Drawing.Rectangle(destX, destY, destWidth, destHeight),
                new System.Drawing.Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
                System.Drawing.GraphicsUnit.Pixel);

            grPhoto.Dispose();
            return bmPhoto;
        }

        private void cbUpload_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (!isBusy)
            {
                isBusy = true;

                try
                {

                    Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();

                    dlg.DefaultExt = ".jpg";
                    dlg.Filter = "Image Files (*.jpeg,*.jpg,*.png)|*.jpeg;*.png;*.jpg";

                    cam.VideoSourcePlayer.Stop();
                    imgSnap.Source = null;
                    cropArea.Visibility = Visibility.Visible;
                    cam.Visibility = Visibility.Hidden;

                    Nullable<bool> result = dlg.ShowDialog();

                    // Get the selected file name and display in a TextBox
                    if (result == true)
                    {
                        // Open document
                        string filename = dlg.FileName;

                        // Load the image and crop it if needed
                        System.Drawing.Bitmap bOrig = (System.Drawing.Bitmap)System.Drawing.Bitmap.FromFile(filename);

                        // Check aspect ratio
                        double cA = (bOrig.Height * 1.0) / (bOrig.Width * 1.0);
                        double fA = imgSnap.Height / imgSnap.Width;

                        System.Drawing.Bitmap img2;
                        if (cA > fA)
                        {
                            int idx = (bOrig.Height - Convert.ToInt32(bOrig.Width * fA)) / 2;
                            img2 = new System.Drawing.Bitmap(bOrig.Width, bOrig.Height - 2 * idx, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                            img2.SetResolution(bOrig.HorizontalResolution, bOrig.VerticalResolution);
                            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(img2);
                            g.DrawImage(bOrig, 0, -idx);
                        }
                        else
                        {
                            int idx = (bOrig.Width - Convert.ToInt32(bOrig.Height / fA)) / 2;
                            img2 = new System.Drawing.Bitmap(bOrig.Width - 2 * idx, bOrig.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                            img2.SetResolution(bOrig.HorizontalResolution, bOrig.VerticalResolution);
                            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(img2);
                            g.DrawImage(bOrig, -idx, 0);
                        }

                        BitmapSource bs = ImageHelper.Bitmap2BitmapSource(img2);
                        var bitmap = new TransformedBitmap(bs,
                             new ScaleTransform(imgSnap.Width / bs.PixelWidth,
                                                imgSnap.Height / bs.PixelHeight));

                        fromFile = true;

                        imgSnap.Source = bitmap;
                        cropArea.Visibility = Visibility.Visible;
                        cam.Visibility = Visibility.Hidden;

                        Canvas.SetLeft(DesignerItem, (imgSnap.Width - imgSnap.Height) / 2);
                        Canvas.SetTop(DesignerItem, 0);
                        DesignerItem.Width = imgSnap.Height;
                        DesignerItem.Height = imgSnap.Height;

                        rB1_0.Visibility = Visibility.Visible;
                        rB1_1.Visibility = Visibility.Visible;
                        rB1_2.Visibility = Visibility.Visible;
                        rB2_0.Visibility = Visibility.Hidden;
                        rB2_1.Visibility = Visibility.Hidden;
                        rB2_2.Visibility = Visibility.Hidden;

                        cbRetake.Visibility = Visibility.Visible;

                        labB2.Foreground = new SolidColorBrush(Color.FromArgb(255, 0, 0, 0));
                        labB1.Foreground = new SolidColorBrush(Color.FromArgb(255, 204, 204, 204));
                        imgB1.Source = new BitmapImage(new Uri("pack://application:,,,/Media/camera-inactive-btn.png"));
                        imgB2.Source = new BitmapImage(new Uri("pack://application:,,,/Media/crop-active-btn.png"));
                        mode = "crop";
                    }
                    else
                    {
                        cropArea.Visibility = Visibility.Hidden;
                        cam.VideoSourcePlayer.Start();
                        cam.Visibility = Visibility.Visible;
                    }

                }
                catch (Exception ex)
                {
                    LogError(ex);
                }

                isBusy = false;
            }
        }

        //ChangeImageSize
        public static System.Drawing.Image ChangeImageSize(System.Drawing.Image imgPhoto, int? Width, int? Height, bool IsEqual)
        {
            int sourceWidth = imgPhoto.Width;
              int sourceHeight = imgPhoto.Height;
              int sourceX = 0;
              int sourceY = 0;
              int destX = 0;
              int destY = 0;

              float nPercent = 0;
              float nPercentW = 0;
              float nPercentH = 0;

              int w, h;
              if (Width.HasValue && !Height.HasValue)
              {
            w = Width.Value;
            nPercentW = ((float)w / (float)sourceWidth);
            h = (IsEqual) ? w : (int)((float)nPercentW * (float)sourceHeight);
            nPercentH = ((float)h / (float)sourceHeight);
              }
              else if (!Width.HasValue && Height.HasValue)
              {
            h = Height.Value;
            nPercentH = ((float)h / (float)sourceHeight);
            w = (IsEqual) ? h : (int)((float)nPercentH * (float)sourceWidth);
            nPercentW = ((float)w / (float)sourceWidth);
              }
              else
              {
            w = Width.Value;
            h = Height.Value;
            nPercentW = ((float)w / (float)sourceWidth);
            nPercentH = ((float)h / (float)sourceHeight);
              }

              if (nPercentH < nPercentW)
              {
            nPercent = nPercentH;
            destX = System.Convert.ToInt16((w - (sourceWidth * nPercent)) * 0.5);
              }
              else
              {
            nPercent = nPercentW;
            destY = System.Convert.ToInt16((h - (sourceHeight * nPercent)) * 0.5);
              }

              int destWidth = (int)(sourceWidth * nPercent);
              int destHeight = (int)(sourceHeight * nPercent);

              System.Drawing.Bitmap bmPhoto = new System.Drawing.Bitmap(w, h, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
              bmPhoto.SetResolution(imgPhoto.VerticalResolution, imgPhoto.HorizontalResolution);

              System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(bmPhoto);
              grPhoto.Clear(System.Drawing.Color.White);
              grPhoto.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
              grPhoto.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
              grPhoto.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
              grPhoto.DrawImage(imgPhoto, new System.Drawing.Rectangle(destX, destY, destWidth, destHeight), new System.Drawing.Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), System.Drawing.GraphicsUnit.Pixel);

              grPhoto.Dispose();
              return bmPhoto;
        }

        private void HandleUpload(FileUpload fileControl)
        {
            if (fileControl.HasFile)
            {
                try
                {
                    Extension = fileControl.FileName.Substring(fileControl.FileName.LastIndexOf(".") + 1);
                    Extension = "png";
                    var fileName = (Server.MapPath(Folder) + FileName + "." + Extension);

                    lblUplderr.Text = "<br>File size: " +
                            fileControl.PostedFile.ContentLength + " kb<br>" +
                            "Content type: " +
                            fileControl.PostedFile.ContentType;

                    using (var upImage = System.Drawing.Image.FromStream(fileControl.PostedFile.InputStream))
                    {
                        // Get height and width of current image
                        int currWidth = (int)upImage.Width;
                        int currHeight = (int)upImage.Height;

                        Int32 newWidth = ImgWidth;
                        float ratio = 0;
                        Int32 newHeight = 0;
                        ratio = (float)currWidth / (float)newWidth;
                        newHeight = (int)(currHeight / ratio);


                        using (var newBmp = new System.Drawing.Bitmap(newWidth,
                            newHeight,
                            System.Drawing.Imaging.PixelFormat.Format24bppRgb))
                        {
                            newBmp.SetResolution(72, 72);
                            newBmp.MakeTransparent();
                            using (var newGraphic = System.Drawing.Graphics.FromImage(newBmp))
                            {
                                newGraphic.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
                                newGraphic.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                                newGraphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                                newGraphic.DrawImage(upImage, 0, 0, newWidth, newHeight);
                                newBmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);
                            }
                        }

                        if (CreateSmallThumbnail)
                        {
                            string thumbName = string.Format("{0}\\{1}{2}.{3}",
                                Server.MapPath(Folder),
                                SmallThumbnailPrefix,
                                FileName,
                                Extension);
                            CreateSquareImage(upImage, thumbName, SmallThumbnailWidth);
                        }

                        if (CreateMediumThumbnail)
                        {
                            string thumbName = string.Format("{0}\\{1}{2}.{3}",
                                Server.MapPath(Folder),
                                MediumThumbnailPrefix,
                                FileName,
                                Extension);
                            CreateSquareImage(upImage, thumbName, MediumThumbnailWidth);
                        }
                    }
                    ProcessRender();
                }
                catch (Exception ex)
                {
                    lblUplderr.Text = "<br><font color=red>ERROR: " + ex.Message.ToString() + "</font>";
                }
            }
            else {
                lblUplderr.Text = "<br><font color=red>ERROR: You have not specified a file.</font>";
            }

        }