PDF.co Web API - PDF Optimization API - C# - Optimize PDF From URL Asynchronously - ByteScout

PDF.co Web API – PDF Optimization API – C# – Optimize PDF From URL Asynchronously

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PDF.co Web API – PDF Optimization API – C# – Optimize PDF From URL Asynchronously

Program.cs

[csharp]
using System;
using System.IO;
using System.Net;
using Newtonsoft.Json.Linq;
using System.Threading;

// Cloud API asynchronous “Optimize PDF” job example.
// Allows to avoid timeout errors when processing huge or scanned PDF documents.

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 PDF file.
const string SourceFileUrl = “https://s3-us-west-2.amazonaws.com/bytescout-com/files/demo-files/cloud-api/pdf-optimize/sample.pdf”;
// PDF document password. Leave empty for unprotected documents.
const string Password = “”;
// Destination PDF file name
const string DestinationFile = @”.\result.pdf”;
// (!) Make asynchronous job
const bool Async = true;

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 `Optimize PDF` API call
string query = Uri.EscapeUriString(string.Format(
“https://api.pdf.co/v1/pdf/optimize?name={0}&password={1}&url={2}&async={3}”,
Path.GetFileName(DestinationFile),
Password,
SourceFileUrl,
Async));

try
{
// Execute request
string response = webClient.DownloadString(query);

// Parse JSON response
JObject json = JObject.Parse(response);

if (json[“error”].ToObject() == false)
{
// Asynchronous job ID
string jobId = json[“jobId”].ToString();
// URL of generated PDF file that will available after the job completion
string resultFileUrl = json[“url”].ToString();

// Check the job status in a loop.
// If you don’t want to pause the main thread you can rework the code
// to use a separate thread for the status checking and completion.
do
{
string status = CheckJobStatus(jobId); // Possible statuses: “InProgress”, “Failed”, “Aborted”, “Finished”.

// Display timestamp and status (for demo purposes)
Console.WriteLine(DateTime.Now.ToLongTimeString() + “: ” + status);

if (status == “Finished”)
{
// Download PDF file
webClient.DownloadFile(resultFileUrl, DestinationFile);

Console.WriteLine(“Generated PDF file saved as \”{0}\” file.”, DestinationFile);
break;
}
else if (status == “InProgress”)
{
// Pause for a few seconds
Thread.Sleep(3000);
}
else
{
Console.WriteLine(status);
break;
}
}
while (true);
}
else
{
Console.WriteLine(json[“message”].ToString());
}
}
catch (WebException e)
{
Console.WriteLine(e.ToString());
}

webClient.Dispose();

Console.WriteLine();
Console.WriteLine(“Press any key…”);
Console.ReadKey();
}

static string CheckJobStatus(string jobId)
{
using (WebClient webClient = new WebClient())
{
// Set API Key
webClient.Headers.Add(“x-api-key”, API_KEY);

string url = “https://api.pdf.co/v1/job/check?jobid=” + jobId;

string response = webClient.DownloadString(url);
JObject json = JObject.Parse(response);

return Convert.ToString(json[“Status”]);
}
}
}
}

[/csharp]


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