barcode reader API in C# using PDF.co Web API

Write code in C# to make barcode reader API with this How-To tutorial

These source code samples are listed and grouped by their programming language and functions they use. PDF.co Web API was made to help with barcode reader API in C#. PDF.co Web API is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

C#, code samples for C#, developers help to speed up the application development and writing a code when using PDF.co Web API. C# sample code is all you need: copy and paste the code to your C# application’s code editor, add a reference to PDF.co Web API (if you haven’t added yet) and you are ready to go! Enhanced documentation and tutorials are available along with installed PDF.co Web API if you’d like to dive deeper into the topic and the details of the API.

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Program.cs
      
using System; using System.IO; using System.Net; using Newtonsoft.Json.Linq; namespace ByteScoutWebApiExample { class Program { // The authentication key (API Key). // Get your own by registering at https://app.pdf.co/documentation/api const String API_KEY = "***********************************"; // Direct URL of source file (image or PDF) to search barcodes in. const string SourceFileURL = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/barcode-reader/sample.pdf"; // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. const string Pages = ""; // Sample profile that sets advanced conversion options // Advanced options are properties of Reader class from Bytescout BarCodeReader used in the back-end: // https://cdn.bytescout.com/help/BytescoutBarCodeReaderSDK/html/ba101d21-3db7-eb54-d112-39cadc023d02.htm static string Profiles = File.ReadAllText("profile.json"); static void Main(string[] args) { // Create standard .NET web client instance WebClient webClient = new WebClient(); // Set API Key webClient.Headers.Add("x-api-key", API_KEY); // Prepare URL for `Barcode Reader` API call string query = Uri.EscapeUriString(string.Format("https://api.pdf.co/v1/barcode/read/from/url?pages={0}&url={1}&profiles={2}", Pages, SourceFileURL, Profiles)); try { // Execute request string response = webClient.DownloadString(query); // Parse JSON response JObject json = JObject.Parse(response); if (json["error"].ToObject<bool>() == false) { // Display found barcodes in console foreach (JToken token in json["barcodes"]) { Console.WriteLine("Found barcode:"); Console.WriteLine(" Type: " + token["TypeName"]); Console.WriteLine(" Value: " + token["Value"]); Console.WriteLine(" Document Page Index: " + token["Page"]); Console.WriteLine(" Rectangle: " + token["Rect"]); Console.WriteLine(" Confidence: " + token["Confidence"]); Console.WriteLine(); } } else { // Display service reported error Console.WriteLine(json["message"].ToString()); } } catch (WebException e) { // Display request error Console.WriteLine(e.ToString()); } webClient.Dispose(); Console.WriteLine(); Console.WriteLine("Press any key..."); Console.ReadKey(); } } }

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packages.config
      
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net40" /> </packages>

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