Read Barcode From URL - C#
Barcode Reader sample in C# demonstrating ‘Read Barcode From URL’
Program.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
namespace ByteScoutWebApiExample
{
class Program
{
// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const String API_KEY = "***********************************";
// Direct URL of source file (image or PDF) to search barcodes in.
// You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
const string SourceFileURL = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/barcode-reader/sample.pdf";
// Comma-separated list of barcode types to search.
// See valid barcode types in the documentation https://apidocs.pdf.co
const string BarcodeTypes = "Code128,Code39,Interleaved2of5,EAN13";
// Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
const string Pages = "";
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 requests params as JSON
// See documentation: https://apidocs.pdf.co/?#barcode-reader
Dictionary<string, string> parameters = new Dictionary<string, string>();
parameters.Add("url", SourceFileURL);
parameters.Add("type", BarcodeTypes);
parameters.Add("pages", Pages);
// Convert dictionary of params to JSON
string jsonPayload = JsonConvert.SerializeObject(parameters);
try
{
// URL of "Barcode Reader" endpoint
string url = "https://api.pdf.co/v1/barcode/read/from/url";
// Execute POST request with JSON payload
string response = webClient.UploadString(url, jsonPayload);
// 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());
}
finally
{
webClient.Dispose();
}
Console.WriteLine();
Console.WriteLine("Press any key...");
Console.ReadKey();
}
}
}
PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.
Download Source Code (.zip)
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