Source code documentation samples give simple and easy method to install a needed feature into your application. ByteScout PDF Suite is the bundle that provides six different SDK libraries to work with PDF from generating rich PDF reports to extracting data from PDF documents and converting them to HTML. This bundle includes PDF (Generator) SDK, PDF Renderer SDK, PDF Extractor SDK, PDF to HTML SDK, PDF Viewer SDK and PDF Generator SDK for Javascript. It can regular expression search and highlight in PDF in C#.
This prolific sample source code in C# for ByteScout PDF Suite contains various functions and other necessary options you should do calling the API to regular expression search and highlight in PDF. Just copy and paste the code into your C# application’s code and follow the instructions. This basic programming language sample code for C# will do the whole work for you to regular expression search and highlight in PDF.
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using System.Diagnostics; using System.Drawing; using Bytescout.PDFExtractor; using Bytescout.PDF; using Pen = Bytescout.PDF.Pen; using SolidBrush = Bytescout.PDF.SolidBrush; namespace SearchAndHighlightExample { class Program { static void Main(string[] args) { const string inputFile = @"sample.pdf"; const int pageIndex = 0; const string searchPattern = "\\d+\\.\\d+"; // Prepare TextExtractor using (TextExtractor textExtractor = new TextExtractor("demo", "demo")) { textExtractor.RegexSearch = true; textExtractor.LoadDocumentFromFile(inputFile); // Load document with PDF SDK using (Document pdfDocument = new Document(inputFile)) { pdfDocument.RegistrationName = "demo"; pdfDocument.RegistrationKey = "demo"; Page pdfDocumentPage = pdfDocument.Pages[pageIndex]; Canvas canvas = pdfDocumentPage.Canvas; SolidBrush fillBrush = new SolidBrush(new ColorRGB(255, 0, 0)); fillBrush.Opacity = 50; // make the brush transparent // Search for pattern and highlight found pieces if (textExtractor.Find(pageIndex, searchPattern, caseSensitive: false)) { do { foreach (var foundPiece in textExtractor.FoundText.Elements) { // Inflate the rectangle a bit RectangleF rect = RectangleF.Inflate(foundPiece.Bounds, 1, 2); // Draw rectangle over the PDF page canvas.DrawRectangle(fillBrush, rect); } } while (textExtractor.FindNext()); } // Save as new PDF document pdfDocument.Save("result.pdf"); // Open result document in default associated application (for demo purposes) Process.Start("result.pdf"); } } } } }
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60 Day Free Trial or Visit ByteScout PDF Suite Home Page
Explore ByteScout PDF Suite Documentation
Explore Samples
Sign Up for ByteScout PDF Suite Online Training
Get Your API Key
Explore Web API Docs
Explore Web API Samples