PdfCompressorWriteAsyncCompletedEventArgs Class

using Leadtools; 
using Leadtools.Codecs; 
 
using Leadtools.PdfCompressor; 
 
/* This example shows a how to use the PdfCompressorEngine::WriteAsync method to create a Pdf asynchronously.  
 * The output file is very simple and contains a single image.  
 * We will store the RasterImage and RasterImage and PdfCompressorEngine in a user class so we can dispose them  
 * when WriteAsync finishes and fires the WriteAsyncCompleted event. 
*/ 
 
 
/* Class used to store the RasterImage and PdfCompressorEngine objects */ 
private class WriteAsyncDataStringObject 
{ 
    public RasterImage image;                 /* image to write as Pdf */ 
    public PdfCompressorEngine pdfCompressor; /* compressor object that will do the save */ 
}; 
 
/* Handler for the WriteAsyncCompleted event */ 
private static void OnWriteAsyncCompletedStringObject(object sender, PdfCompressorWriteAsyncCompletedEventArgs args) 
{ 
    if (args.Error != null) 
        Debug.WriteLine($"WriteAsyncThread: The save operation failed with exception = {args.Error.Message}."); 
    else if (args.Cancelled) 
        Debug.WriteLine($"WriteAsyncThread: The save operation was cancelled!"); 
    else 
        Debug.WriteLine($"WriteAsyncThread: The save operation succeeded! Saved as {args.FileName}"); 
    /* clean up the data used by WriteAsync operation */ 
    WriteAsyncDataStringObject data = (WriteAsyncDataStringObject)args.UserState; 
    data.pdfCompressor.Dispose(); 
    data.image.Dispose(); 
    if (args.Stream != null) 
        args.Stream.Close(); 
} 
 
/* Main function calling PdfCompressorEngine.WriteAsync. Note that WriteAsync will finish after this function returns */ 
public void TestPdfCompressorSaveAsyncStringObject() 
{ 
    string srcFile = Path.Combine(LEAD_VARS.ImagesDir, "glare.jpg"); 
    string dstFile = Path.Combine(LEAD_VARS.ImagesDir, "out.pdf"); 
 
    WriteAsyncDataStringObject data = new WriteAsyncDataStringObject(); 
    using (RasterCodecs codecs = new RasterCodecs()) 
        data.image = codecs.Load(srcFile); 
    data.pdfCompressor = new PdfCompressorEngine(); 
    data.pdfCompressor.Insert(data.image); 
 
    /* Register OnWriteAsyncCompleted as a handler for the WriteAsyncCompleted event */ 
    data.pdfCompressor.WriteAsyncCompleted += OnWriteAsyncCompletedStringObject; 
    data.pdfCompressor.WriteAsync(dstFile, data); 
 
    Debug.WriteLine("MainThread: WriteAsync returned..."); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}