    private void createPdfButton_Click(object sender, EventArgs e)
    {
        // Create a PDF document
        Document pdfDocument = new Document();

        // Set license key received after purchase to use the converter in licensed mode
        // Leave it not set to use the converter in demo mode
        pdfDocument.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

        Cursor = Cursors.WaitCursor;
        string outPdfFile = @"DemoAppFiles\Output\PDF_Creator\Image_Elements.pdf";
        try
        {
            // The result of adding elements to PDF document
            AddElementResult addElementResult = null;

            // The titles font used to mark various sections of the PDF document
            PdfFont titleFont = pdfDocument.AddFont(new Font("Times New Roman", 12, FontStyle.Bold, GraphicsUnit.Point));
            PdfFont subtitleFont = pdfDocument.AddFont(new Font("Times New Roman", 8, FontStyle.Bold, GraphicsUnit.Point));

            // The position on X anf Y axes where to add the next element
            float yLocation = 5;
            float xLocation = 5;

            // Create a PDF page in PDF document
            PdfPage pdfPage = pdfDocument.AddPage();

            // Add section title
            TextElement titleTextElement = new TextElement(xLocation, yLocation, "Images Scaling", titleFont);
            titleTextElement.ForeColor = Color.Black;
            addElementResult = pdfPage.AddElement(titleTextElement);
            yLocation = addElementResult.EndPageBounds.Bottom + 10;
            pdfPage = addElementResult.EndPdfPage;

            float titlesYLocation = yLocation;

            // Add an unscaled image

            // Add section title
            TextElement subtitleTextElement = new TextElement(xLocation, titlesYLocation, "Unscaled small image with normal resolution", subtitleFont);
            subtitleTextElement.ForeColor = Color.Navy;
            addElementResult = pdfPage.AddElement(subtitleTextElement);

            pdfPage = addElementResult.EndPdfPage;
            float imagesYLocation = addElementResult.EndPageBounds.Bottom + 10;

            string imagePath = @"DemoAppFiles\Input\Images\picture_small.jpg";
            ImageElement unscaledImageElement = new ImageElement(xLocation, imagesYLocation, imagePath);
            addElementResult = pdfPage.AddElement(unscaledImageElement);

            RectangleF scaledDownImageRectangle = new RectangleF(addElementResult.EndPageBounds.Right + 30, addElementResult.EndPageBounds.Y,
                        addElementResult.EndPageBounds.Width, addElementResult.EndPageBounds.Height);

            // Add a large image scaled down to same size in PDF

            // Add section title
            subtitleTextElement = new TextElement(scaledDownImageRectangle.X, titlesYLocation, "Scaled down large image has higher resolution", subtitleFont);
            subtitleTextElement.ForeColor = Color.Navy;
            pdfPage.AddElement(subtitleTextElement);

            imagePath = @"DemoAppFiles\Input\Images\picture_large.jpg";
            ImageElement scaledDownImageElement = new ImageElement(scaledDownImageRectangle.X, scaledDownImageRectangle.Y, scaledDownImageRectangle.Width, imagePath);
            AddElementResult scaledDownImageResult = pdfPage.AddElement(scaledDownImageElement);

            // Add a border around the scaled down image
            RectangleElement borderElement = new RectangleElement(scaledDownImageRectangle);
            pdfPage.AddElement(borderElement);

            // Add an unscaled small image

            float columnX = scaledDownImageResult.EndPageBounds.Right + 30;

            // Add section title
            subtitleTextElement = new TextElement(columnX, titlesYLocation, "Unscaled small image", subtitleFont);
            subtitleTextElement.ForeColor = Color.Navy;
            pdfPage.AddElement(subtitleTextElement);

            imagePath = @"DemoAppFiles\Input\Images\picture_smaller.jpg";
            unscaledImageElement = new ImageElement(columnX, imagesYLocation, imagePath);
            AddElementResult unscaledImageResult = pdfPage.AddElement(unscaledImageElement);

            RectangleF unscaledImageRectangle = unscaledImageResult.EndPageBounds;

            // Add an enlarged image

            // Add section title
            subtitleTextElement = new TextElement(columnX, unscaledImageRectangle.Bottom + 10, "Enlarged small image has lower resolution", subtitleFont);
            subtitleTextElement.ForeColor = Color.Navy;
            AddElementResult enlargedImageTitle = pdfPage.AddElement(subtitleTextElement);

            float enlargedImageWidth = unscaledImageRectangle.Width + 35;

            imagePath = @"DemoAppFiles\Input\Images\picture_smaller.jpg";
            ImageElement enlargedImageElement = new ImageElement(columnX, enlargedImageTitle.EndPageBounds.Bottom + 10, enlargedImageWidth, imagePath);
            // Allow the image to be enlarged
            enlargedImageElement.EnlargeEnabled = true;
            AddElementResult enalargedImageResult = pdfPage.AddElement(enlargedImageElement);

            yLocation = addElementResult.EndPageBounds.Bottom + 10;

            // Scale an image preserving the aspect ratio

            titlesYLocation = yLocation;

            // Add section title
            subtitleTextElement = new TextElement(xLocation, titlesYLocation, "Scaled down image preserving aspect ratio", subtitleFont);
            subtitleTextElement.ForeColor = Color.Navy;
            addElementResult = pdfPage.AddElement(subtitleTextElement);

            pdfPage = addElementResult.EndPdfPage;
            yLocation = addElementResult.EndPageBounds.Bottom + 10;

            RectangleF boundingRectangle = new RectangleF(xLocation, yLocation, scaledDownImageRectangle.Width, scaledDownImageRectangle.Width);
            imagesYLocation = boundingRectangle.Y;

            imagePath = @"DemoAppFiles\Input\Images\landscape.jpg";
            ImageElement keepAspectImageElement = new ImageElement(boundingRectangle.X, imagesYLocation, boundingRectangle.Width, boundingRectangle.Width, true, imagePath);
            addElementResult = pdfPage.AddElement(keepAspectImageElement);

            borderElement = new RectangleElement(boundingRectangle);
            borderElement.ForeColor = Color.Black;
            pdfPage.AddElement(borderElement);

            // Scale an image without preserving aspect ratio
            // This can produce a distorted image

            boundingRectangle = new RectangleF(addElementResult.EndPageBounds.Right + 30, addElementResult.EndPageBounds.Y, scaledDownImageRectangle.Width, scaledDownImageRectangle.Width);

            // Add section title
            subtitleTextElement = new TextElement(boundingRectangle.X, titlesYLocation, "Scaled down image without preserving aspect ratio", subtitleFont);
            subtitleTextElement.ForeColor = Color.Navy;
            pdfPage.AddElement(subtitleTextElement);

            imagePath = @"DemoAppFiles\Input\Images\landscape.jpg";
            ImageElement notKeepAspectImageElement = new ImageElement(boundingRectangle.X, imagesYLocation, boundingRectangle.Width, boundingRectangle.Width, false, imagePath);
            addElementResult = pdfPage.AddElement(notKeepAspectImageElement);

            borderElement = new RectangleElement(boundingRectangle);
            borderElement.ForeColor = Color.Black;
            pdfPage.AddElement(borderElement);

            pdfPage = addElementResult.EndPdfPage;
            yLocation = addElementResult.EndPageBounds.Bottom + 20;

            // Add transparent images

            // Add section title
            titleTextElement = new TextElement(xLocation, yLocation, "Transparent Images", titleFont);
            titleTextElement.ForeColor = Color.Black;
            addElementResult = pdfPage.AddElement(titleTextElement);
            yLocation = addElementResult.EndPageBounds.Bottom + 10;
            pdfPage = addElementResult.EndPdfPage;

            imagePath = @"DemoAppFiles\Input\Images\transparent.png";
            ImageElement trasparentImageElement = new ImageElement(xLocation, yLocation, 150, imagePath);
            addElementResult = pdfPage.AddElement(trasparentImageElement);

            imagePath = @"DemoAppFiles\Input\Images\rose.png";
            trasparentImageElement = new ImageElement(addElementResult.EndPageBounds.Right + 60, yLocation + 20, 150, imagePath);
            pdfPage.AddElement(trasparentImageElement);

            pdfPage = addElementResult.EndPdfPage;
            yLocation = addElementResult.EndPageBounds.Bottom + 20;

            // Rotate images

            // Add section title
            titleTextElement = new TextElement(xLocation, yLocation, "Rotated Images", titleFont);
            titleTextElement.ForeColor = Color.Black;
            addElementResult = pdfPage.AddElement(titleTextElement);
            yLocation = addElementResult.EndPageBounds.Bottom + 10;
            pdfPage = addElementResult.EndPdfPage;

            // Add a not rotated image
            imagePath = @"DemoAppFiles\Input\Images\compass.png";
            ImageElement noRotationImageElement = new ImageElement(xLocation, yLocation, 125, imagePath);
            addElementResult = pdfPage.AddElement(noRotationImageElement);

            float imageXLocation = addElementResult.EndPageBounds.X;
            float imageYLocation = addElementResult.EndPageBounds.Y;
            float imageWidth = addElementResult.EndPageBounds.Width;
            float imageHeight = addElementResult.EndPageBounds.Height;

            // The rotated coordinates system location
            float rotatedImageXLocation = imageXLocation + imageWidth + 20 + imageHeight;
            float rotatedImageYLocation = imageYLocation;

            // Add the image rotated 90 degrees
            ImageElement rotate90ImageElement = new ImageElement(0, 0, 125, imagePath);
            rotate90ImageElement.Translate(rotatedImageXLocation, rotatedImageYLocation);
            rotate90ImageElement.Rotate(90);
            pdfPage.AddElement(rotate90ImageElement);

            rotatedImageXLocation += 20 + imageWidth;
            rotatedImageYLocation = imageYLocation + imageHeight;

            // Add the image rotated 180 degrees
            ImageElement rotate180ImageElement = new ImageElement(0, 0, 125, imagePath);
            rotate180ImageElement.Translate(rotatedImageXLocation, rotatedImageYLocation);
            rotate180ImageElement.Rotate(180);
            pdfPage.AddElement(rotate180ImageElement);

            rotatedImageXLocation += 20;
            rotatedImageYLocation = imageYLocation + imageWidth;

            // Add the image rotated 270 degrees
            ImageElement rotate270ImageElement = new ImageElement(0, 0, 125, imagePath);
            rotate270ImageElement.Translate(rotatedImageXLocation, rotatedImageYLocation);
            rotate270ImageElement.Rotate(270);
            pdfPage.AddElement(rotate270ImageElement);

            pdfPage = addElementResult.EndPdfPage;
            yLocation = addElementResult.EndPageBounds.Bottom + 20;

            // Save the PDF document in a memory buffer
            byte[] outPdfBuffer = pdfDocument.Save();

            // Write the memory buffer in a PDF file
            System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer);
        }
        catch (Exception ex)
        {
            // The PDF creation failed
            MessageBox.Show(String.Format("Create PDF Document Error. {0}", ex.Message));
            return;
        }
        finally
        {
            // Close the PDF document
            pdfDocument.Close();

            Cursor = Cursors.Arrow;
        }

        // Open the created PDF document in default PDF viewer
        try
        {
            System.Diagnostics.Process.Start(outPdfFile);
        }
        catch (Exception ex)
        {
            MessageBox.Show(String.Format("Cannot open created PDF file '{0}'. {1}", outPdfFile, ex.Message));
        }
    }