1016017 - How to Work with QR Codes in PDF Documents Using the .NET PDF Library

Videos/QRCode/QRCode.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36310.24 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QRCode", "QRCode\QRCode.csproj", "{6DDB423B-D124-42E5-88FD-FD20B7BB0D81}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6DDB423B-D124-42E5-88FD-FD20B7BB0D81}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6DDB423B-D124-42E5-88FD-FD20B7BB0D81}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6DDB423B-D124-42E5-88FD-FD20B7BB0D81}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6DDB423B-D124-42E5-88FD-FD20B7BB0D81}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {98FD6C68-6124-48F4-8CA5-31496FBA2055}
+	EndGlobalSection
+EndGlobal

Videos/QRCode/QRCode/Controllers/HomeController.cs

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+using Microsoft.AspNetCore.Mvc;
+using QRCode.Models;
+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Barcode;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Parsing;
+using System.Diagnostics;
+
+namespace QRCode.Controllers
+{
+    public class HomeController : Controller
+    {
+        private readonly ILogger<HomeController> _logger;
+
+        public HomeController(ILogger<HomeController> logger)
+        {
+            _logger = logger;
+        }
+
+        public IActionResult AddQRToPDF()
+        {
+            //Load the existing PDF file
+            PdfLoadedDocument loadedDocument = new PdfLoadedDocument("data/input.pdf");
+
+            //Create a QR code
+            PdfQRBarcode qrBarcode = new PdfQRBarcode();
+
+            qrBarcode.Text = "support@adventure-works.com";
+
+            qrBarcode.XDimension = 2.5f;
+
+            //Get the first page of the PDF document
+            PdfLoadedPage? loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
+
+            //Draw the QR code on that page
+            qrBarcode.Draw(loadedPage!, new PointF(50, 710));
+
+            // Return the PDF as a downloadable file
+            return ExportPDF(loadedDocument, "qrcode.pdf");
+        }
+
+        public IActionResult CustomizeQR()
+        {
+            //Load the existing PDF file
+            PdfLoadedDocument loadedDocument = new PdfLoadedDocument("data/input.pdf");
+
+            //Create a QR code
+            PdfQRBarcode qrBarcode = new PdfQRBarcode();
+
+            // Set QR code properties
+            qrBarcode.Text = "https://www.syncfusion.com/document-sdk";
+
+            //Set the QR size
+            qrBarcode.Size = new SizeF(75, 75);
+
+            qrBarcode.XDimension = 5;
+
+            // Error correction configuration
+            qrBarcode.ErrorCorrectionLevel = PdfErrorCorrectionLevel.High;
+
+            // Encoding mode optimization
+            qrBarcode.InputMode = InputMode.BinaryMode;
+
+            // Version control (1-40 or Auto)
+            qrBarcode.Version = QRCodeVersion.Version10;
+
+            // Foreground color for QR pattern
+            qrBarcode.ForeColor = Color.White;
+
+            // Background color
+            qrBarcode.BackColor = new PdfColor(46, 197, 190);
+
+            //Set quiet zone (margin) around the QR code
+            qrBarcode.QuietZone = new PdfBarcodeQuietZones() { All = 5 };
+
+            //Get the first page of the PDF document
+            PdfLoadedPage? loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
+
+            //Draw the QR code on that page
+            qrBarcode.Draw(loadedPage!, new PointF(50, 710));
+
+            // Return the PDF as a downloadable file
+            return ExportPDF(loadedDocument, "qrcode-customization.pdf");
+        }
+
+        public IActionResult QRWithLogo()
+        {
+            //Load the existing PDF file
+            PdfLoadedDocument loadedDocument = new PdfLoadedDocument("data/input.pdf");
+
+            //Create a QR code
+            PdfQRBarcode qrBarcode = new PdfQRBarcode();
+
+            // Set QR code properties
+            qrBarcode.Text = "https://www.syncfusion.com/document-sdk";
+
+            //Set the QR size
+            qrBarcode.Size = new SizeF(75, 75);
+
+            qrBarcode.XDimension = 5;
+
+            // Error correction configuration
+            qrBarcode.ErrorCorrectionLevel = PdfErrorCorrectionLevel.High;
+
+            // Encoding mode optimization
+            qrBarcode.InputMode = InputMode.BinaryMode;
+
+            // Version control (1-40 or Auto)
+            qrBarcode.Version = QRCodeVersion.Version10;
+
+            // Foreground color for QR pattern
+            qrBarcode.ForeColor = Color.White;
+
+            // Background color
+            qrBarcode.BackColor = new PdfColor(46, 197, 190);
+
+            //Set quiet zone (margin) around the QR code
+            qrBarcode.QuietZone = new PdfBarcodeQuietZones() { All = 5 };
+
+            //Get the first page of the PDF document
+            PdfLoadedPage? loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
+
+            //Create logo for QR code
+            QRCodeLogo logo = new QRCodeLogo(PdfBitmap.FromStream(new FileStream("data\\logo.png", FileMode.Open, FileAccess.Read)));
+
+            //Set logo in qrcode
+            qrBarcode.Logo = logo;
+
+            //Draw the QR code on that page
+            qrBarcode.Draw(loadedPage!, new PointF(50, 710));
+
+            // Return the PDF as a downloadable file
+            return ExportPDF(loadedDocument, "qrcode-with-logo.pdf");
+        }
+
+        public IActionResult QRToHeader()
+        {
+            PdfDocument document = new PdfDocument();
+
+            //Add page to the document
+            PdfPage page = document.Pages.Add();
+
+            //Get the page size
+            SizeF pageSize = page.GetClientSize();
+
+            //Create the header template and add to the document
+            document.Template.Top = CreateHeaderTemplate(new SizeF(pageSize.Width, 100));
+
+            //Read the text from the text file
+            string text = System.IO.File.ReadAllText("data\\input.txt");
+
+            PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 12);
+
+            PdfTextElement element = new PdfTextElement(text, font);
+
+            element.Draw(page, new PointF(0, 0));
+
+            // Create a memory stream to hold the output PDF
+            MemoryStream outputStream = new MemoryStream();
+
+            // Save the document to the memory stream
+            document.Save(outputStream);
+
+            // Reset the stream position to the beginning
+            outputStream.Position = 0;
+
+            // Close the document and release resources
+            document.Close(true);
+
+            // Return the PDF as a downloadable file
+            return File(outputStream, "application/pdf", "qrcode-in-header.pdf");
+        }
+
+        //Create header template and return
+        PdfPageTemplateElement CreateHeaderTemplate(SizeF headerSize)
+        {
+            //Create PdfPageTemplateElement
+            PdfPageTemplateElement header = new PdfPageTemplateElement(new RectangleF(0, 0, headerSize.Width, headerSize.Height));
+
+            string headerText = "PDF Succinctly";
+
+            PdfStandardFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 16, PdfFontStyle.Regular);
+
+            //Measure the text size
+            SizeF textSize = font.MeasureString(headerText);
+
+            //Draw the text with center alignment
+            header.Graphics.DrawString("PDF Succinctly", font, PdfBrushes.Black, new PointF(0, (headerSize.Height - font.Height) / 2));
+
+            //Create a QR code and draw
+            PdfQRBarcode qrBarcode = new PdfQRBarcode()
+            {
+                Text = "https://www.syncfusion.com/succinctly-free-ebooks/pdf",
+                Size = new SizeF(75, 75),
+            };
+
+            //Draw the QR code on the header
+            qrBarcode.Draw(header.Graphics, new PointF(headerSize.Width - (qrBarcode.Size.Width + 40), (headerSize.Height - qrBarcode.Size.Height) / 2));
+
+            //Draw line to separate header
+            header.Graphics.DrawLine(new PdfPen(PdfBrushes.LightGray, 0.5f), new PointF(0, headerSize.Height - 5), new PointF(headerSize.Width, headerSize.Height - 5));
+
+            return header;
+        }
+
+
+        // Helper method to save the modified PDF and return it as a file result
+        private FileStreamResult ExportPDF(PdfLoadedDocument document, string fileName)
+        {
+            // Create a memory stream to hold the output PDF
+            MemoryStream outputStream = new MemoryStream();
+
+            // Save the document to the memory stream
+            document.Save(outputStream);
+
+            // Reset the stream position to the beginning
+            outputStream.Position = 0;
+
+            // Close the document and release resources
+            document.Close(true);
+
+            // Return the PDF as a downloadable file
+            return File(outputStream, "application/pdf", fileName);
+        }
+
+        public IActionResult Index()
+        {
+            return View();
+        }
+
+        public IActionResult Privacy()
+        {
+            return View();
+        }
+
+        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+        public IActionResult Error()
+        {
+            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
+        }
+    }
+}