ByteScout PDF Renderer SDK – C# – Rendering In Background Thread

ByteScout PDF Renderer SDK – C# – Rendering In Background Thread

Program.cs

using System;
using System.IO;
using System.Threading;
using Bytescout.PDFRenderer;

namespace RenderingInBackgroundThread
{
class Program
{
private static ManualResetEvent _doneEvent = new ManualResetEvent(false); // synchronization event
private static int _counter; // thread counter

static void Main(string[] args)
{
// Get all PDF files in current directory
string[] pdfFiles = Directory.GetFiles(“.”, “*.pdf”);
_counter = pdfFiles.Length;

// Render PDF files in separate threads
foreach (string pdfFile in pdfFiles)
{
Thread backgroundThread = new Thread(BackgroundThreadProc);
backgroundThread.Start(pdfFile);
Console.WriteLine(pdfFile + ” – conversion started.”);
}

// Wait until threads finished
_doneEvent.WaitOne();

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

// Rendering thread function
private static void BackgroundThreadProc(object data)
{
string fileName = (string) data;

try
{
// Create renderer
using (RasterRenderer renderer = new RasterRenderer())
{
renderer.LoadDocumentFromFile(fileName);

// Setup rendering
RenderingOptions renderingOptions = new RenderingOptions();
renderingOptions.JPEGQuality = 90;

float renderingResolution = 300;

// Render document pages
for (int i = 0; i < renderer.GetPageCount(); i++) { renderer.Save(fileName + ".page" + i + ".jpg", RasterImageFormat.JPEG, i, renderingResolution, renderingOptions); } } Console.WriteLine(fileName + " - successfully converted."); } catch (Exception exception) { Console.WriteLine(exception.ToString()); } if (Interlocked.Decrement(ref _counter) == 0) { // Set event if all threads finished _doneEvent.Set(); } } } } [/csharp]

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