PDFからPostScriptへの変換

次のコードスニペットは、Aspose.PDF.Drawingライブラリでも動作します。

C#でのPDFからPostScriptへの変換

PdfViewerクラスは、PDF文書を印刷する機能を提供し、このクラスの助けを借りてPDFファイルをPostScript形式に変換することもできます。PDFファイルをPostScriptに変換するには、まず任意のPSプリンターをインストールし、PdfViewerの助けを借りてファイルに印刷します。PSプリンターをインストールするには、プリンターベンダーが提供する指示を参照してください。次のコードスニペットは、PDFをPostScript形式に印刷および変換する方法を示しています。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void PrintToPostscriptFile()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Create PdfViewer object
    using (var viewer = new Aspose.Pdf.Facades.PdfViewer())
    {
        // Bind PDF document
        viewer.BindPdf(dataDir + "PrintDocument.pdf");

        // Set PrinterSettings and PageSettings
        var printerSettings = new Aspose.Pdf.Printing.PrinterSettings();
        printerSettings.Copies = 1;

        // Set PS printer, one can find this driver in the list of preinstalled printer drivers in Windows
        printerSettings.PrinterName = "HP LaserJet 2300 Series PS";

        // Set output file name and PrintToFile attribute
        printerSettings.PrintFileName = dataDir + "PdfToPostScript_out.ps";
        printerSettings.PrintToFile = true;
        
        // Disable print page dialog
        viewer.PrintPageDialog = false;
        
        // Pass printer settings object to the method
        viewer.PrintDocumentWithSettings(printerSettings);
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void PrintToPostscriptFile()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Create PdfViewer object
    using var viewer = new Aspose.Pdf.Facades.PdfViewer();

    // Bind PDF document
    viewer.BindPdf(dataDir + "PrintDocument.pdf");

    // Set PrinterSettings and PageSettings
    var printerSettings = new Aspose.Pdf.Printing.PrinterSettings();
    printerSettings.Copies = 1;

    // Set PS printer, one can find this driver in the list of preinstalled printer drivers in Windows
    printerSettings.PrinterName = "HP LaserJet 2300 Series PS";

    // Set output file name and PrintToFile attribute
    printerSettings.PrintFileName = dataDir + "PdfToPostScript_out.ps";
    printerSettings.PrintToFile = true;
        
    // Disable print page dialog
    viewer.PrintPageDialog = false;
        
    // Pass printer settings object to the method
    viewer.PrintDocumentWithSettings(printerSettings);
}

印刷ジョブのステータスを確認する

PDFファイルは、物理プリンターやMicrosoft XPS Document Writerに印刷でき、印刷ダイアログを表示せずにPdfViewerクラスを使用して印刷できます。大きなPDFファイルを印刷する場合、プロセスに時間がかかることがあるため、ユーザーは印刷プロセスが完了したか、問題が発生したかどうかを確信できないことがあります。印刷ジョブのステータスを確認するには、PrintStatusプロパティを使用します。次のコードスニペットは、PDFファイルをXPSファイルに印刷し、印刷ステータスを取得する方法を示しています。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void CheckingPrintJobStatus()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Instantiate PdfViewer object
    using (var viewer = new Aspose.Pdf.Facades.PdfViewer())
    {
        // Bind PDF document
        viewer.BindPdf(dataDir + "PrintDocument.pdf");

        // Print the file with adjusted size
        viewer.AutoResize = true;

        // Hide printing dialog
        viewer.PrintPageDialog = false;

        // Create Printer Settings object
        var ps = new Aspose.Pdf.Printing.PrinterSettings();
        var pgs = new Aspose.Pdf.Printing.PageSettings();

        // Specify the printer name
        ps.PrinterName = "Microsoft XPS Document Writer";

        // Resultant Printout name
        ps.PrintFileName = dataDir + "CheckingPrintJobStatus_out.xps";

        // Print the output to file
        ps.PrintToFile = true;

        // Set a range of pages to print
        ps.FromPage = 1;
        ps.ToPage = 2;
        ps.PrintRange = Aspose.Pdf.Printing.PrintRange.SomePages;

        // Specify the page size of printout
        pgs.PaperSize = Aspose.Pdf.Printing.PaperSizes.A4;
        ps.DefaultPageSettings.PaperSize = pgs.PaperSize;

        // Specify page margins
        pgs.Margins = new Aspose.Pdf.Devices.Margins(0, 0, 0, 0);

        // Print the document with settings specified above
        viewer.PrintDocumentWithSettings(pgs, ps);

        // Check the print status
        if (viewer.PrintStatus != null)
        {
            // An exception was thrown
            if (viewer.PrintStatus is Exception ex)
            {
                // Get exception message
                Console.WriteLine(ex.Message);
            }
        }
        else
        {
            // No errors were found. Printing job has completed successfully
            Console.WriteLine("Printing completed without any issue.");
        }
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void CheckingPrintJobStatus()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Instantiate PdfViewer object
    using var viewer = new Aspose.Pdf.Facades.PdfViewer();

    // Bind PDF document
    viewer.BindPdf(dataDir + "PrintDocument.pdf");

    // Print the file with adjusted size
    viewer.AutoResize = true;

    // Hide printing dialog
    viewer.PrintPageDialog = false;

    // Create Printer Settings object
    var ps = new Aspose.Pdf.Printing.PrinterSettings();
    var pgs = new Aspose.Pdf.Printing.PageSettings();

    // Specify the printer name
    ps.PrinterName = "Microsoft XPS Document Writer";

    // Resultant Printout name
    ps.PrintFileName = dataDir + "CheckingPrintJobStatus_out.xps";

    // Print the output to file
    ps.PrintToFile = true;

    // Set a range of pages to print
    ps.FromPage = 1;
    ps.ToPage = 2;
    ps.PrintRange = Aspose.Pdf.Printing.PrintRange.SomePages;

    // Specify the page size of printout
    pgs.PaperSize = Aspose.Pdf.Printing.PaperSizes.A4;
    ps.DefaultPageSettings.PaperSize = pgs.PaperSize;

    // Specify page margins
    pgs.Margins = new Aspose.Pdf.Devices.Margins(0, 0, 0, 0);

    // Print the document with settings specified above
    viewer.PrintDocumentWithSettings(pgs, ps);

    // Check the print status
    if (viewer.PrintStatus != null)
    {
        // An exception was thrown
        if (viewer.PrintStatus is Exception ex)
        {
            // Get exception message
            Console.WriteLine(ex.Message);
        }
    }
    else
    {
        // No errors were found. Printing job has completed successfully
        Console.WriteLine("Printing completed without any issue.");
    }
}

印刷ジョブの所有者名を取得/設定する

時々、印刷ジョブの所有者名（つまり、ウェブページで印刷ボタンを押した実際のユーザー）を取得または設定する必要があります。この情報は、PDFファイルを印刷する際に必要です。この要件を満たすために、PrinterJobNameプロパティが使用されます。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void SetPrinterJobName()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Create PdfViewer object
    using (var viewer = new Aspose.Pdf.Facades.PdfViewer())
    {
        // Bind PDF document
        viewer.BindPdf(dataDir + "PrintDocument.pdf");

        // Specify the name of Print job
        viewer.PrinterJobName = GetCurrentUserCredentials();

        // Fill the necessary settings and print the documents, as shown in examples in this section
    }
}

private static string GetCurrentUserCredentials()
{
    // The implementation depends on type of running application (ASP.NET, Windows forms, etc.)
    var userCredentials = string.Empty;
    return userCredentials;
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void SetPrinterJobName()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Create PdfViewer object
    using var viewer = new Aspose.Pdf.Facades.PdfViewer();

    // Bind PDF document
    viewer.BindPdf(dataDir + "PrintDocument.pdf");

    // Specify the name of Print job
    viewer.PrinterJobName = GetCurrentUserCredentials();

    // Fill the necessary settings and print the documents, as shown in examples in this section
}

private static string GetCurrentUserCredentials()
{
    // The implementation depends on type of running application (ASP.NET, Windows forms, etc.)
    var userCredentials = string.Empty;
    return userCredentials;
}

インパーソネーションの使用

印刷ジョブの所有者名を取得する別のアプローチは、インパーソネーション（別のユーザーコンテキストで印刷ルーチンを実行する）を使用することです。また、ユーザーはSetJobルーチンを使用して所有者名を直接変更することもできます。

セキュリティ上の理由から、Aspose.PDF印刷APIを使用して所有者値を設定することはできませんのでご注意ください。PrinterJobNameプロパティは、スプーラ印刷アプリケーションのドキュメント名列の値を設定するために使用できます。上記のコードスニペットは、ユーザーがドキュメント名列にユーザー名を追加する方法を示しています（例えば、UserName\documentNameの構文を使用）。しかし、所有者列の設定は、ユーザーによって次の方法で直接実装できます。

1. インパーソネーション。所有者列の値には印刷コードを実行するユーザーの値が含まれているため、別のユーザーコンテキスト内でAspose.PDF印刷APIを呼び出す方法があります。例えば、ここで説明されているソリューションを見てください。このインパーソネータークラスを使用することで、ユーザーは目標を達成できます。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void PrintWithImpersonation()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Create PdfViewer object
    using (var viewer = new Aspose.Pdf.Facades.PdfViewer())
    {
        // Bind PDF document
        viewer.BindPdf(dataDir + "PrintDocument.pdf");

        // Do not produce the page number dialog when printing
        viewer.PrintPageDialog = false;

        // Impersonate another user
        using (new Impersonator("OwnerUserName", "SomeDomain", "OwnerUserPassword"))
        {
            // Set PrinterSettings
            var ps = new Aspose.Pdf.Printing.PrinterSettings();

            // Set the name of the printer
            ps.PrinterName = "Microsoft XPS Document Writer";

            // Pass printer settings object to the method
            viewer.PrintDocumentWithSettings(ps); // OwnerUserName is a value of Owner column in spooler app
        }
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void PrintWithImpersonation()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    // Create PdfViewer object
    using var viewer = new Aspose.Pdf.Facades.PdfViewer();

    // Bind PDF document
    viewer.BindPdf(dataDir + "PrintDocument.pdf");

    // Do not produce the page number dialog when printing
    viewer.PrintPageDialog = false;

    // Impersonate another user
    using var impersonator = new Impersonator("OwnerUserName", "SomeDomain", "OwnerUserPassword");

    // Set PrinterSettings
    var ps = new Aspose.Pdf.Printing.PrinterSettings();

    // Set the name of the printer
    ps.PrinterName = "Microsoft XPS Document Writer";

    // Pass printer settings object to the method
    viewer.PrintDocumentWithSettings(ps); // OwnerUserName is a value of Owner column in spooler app
}

2. スプーラAPIとSetJobルーチンの使用

次のコードスニペットは、PDFファイルの一部のページを単面印刷し、他のページを両面印刷する方法を示しています。

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
struct PrintingJobSettings
{
    public int ToPage { get; set; }
    public int FromPage { get; set; }
    public string OutputFile { get; set; }
    public Aspose.Pdf.Printing.Duplex Mode { get; set; }
}

private static void PrintUsingSpoolerApi()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    int printingJobIndex = 0;
    string outputDir = dataDir;
    var printingJobs = new List<PrintingJobSettings>();

    // Create multiple printing jobs to print different page ranges with different duplex settings
    var printingJob1 = new PrintingJobSettings();
    printingJob1.FromPage = 1;
    printingJob1.ToPage = 3;
    printingJob1.OutputFile = outputDir + "PrintUsingSpoolerApi_p1-3_out.xps";
    printingJob1.Mode = Aspose.Pdf.Printing.Duplex.Default;

    printingJobs.Add(printingJob1);

    PrintingJobSettings printingJob2 = new PrintingJobSettings();
    printingJob2.FromPage = 4;
    printingJob2.ToPage = 6;
    printingJob2.OutputFile = outputDir + "PrintUsingSpoolerApi_p4-6_out.xps";
    printingJob2.Mode = Aspose.Pdf.Printing.Duplex.Simplex;

    printingJobs.Add(printingJob2);

    PrintingJobSettings printingJob3 = new PrintingJobSettings();
    printingJob3.FromPage = 7;
    printingJob3.ToPage = 7;
    printingJob3.OutputFile = outputDir + "PrintUsingSpoolerApi_p7_out.xps";
    printingJob3.Mode = Aspose.Pdf.Printing.Duplex.Default;

    printingJobs.Add(printingJob3);

    // Create PdfViewer object
    using (var viewer = new Aspose.Pdf.Facades.PdfViewer())
    {
        // Bind PDF document
        viewer.BindPdf(dataDir + "Print-PageRange.pdf");

        // Set attributes for printing
        // Print the file with adjusted size
        viewer.AutoResize = true;
        // Print the file with adjusted rotation
        viewer.AutoRotate = true;
        // Do not produce the page number dialog when printing
        viewer.PrintPageDialog = false;

        // Create objects for printer and page settings
        var ps = new Aspose.Pdf.Printing.PrinterSettings();
        var pgs = new Aspose.Pdf.Printing.PageSettings();

        // Set printer name
        ps.PrinterName = "Microsoft XPS Document Writer";

        // Set output file name and PrintToFile attribute
        ps.PrintFileName = Path.GetFullPath(printingJobs[printingJobIndex].OutputFile);
        ps.PrintToFile = true;

        // Set parameters for the first print job
        ps.FromPage = printingJobs[printingJobIndex].FromPage;
        ps.ToPage = printingJobs[printingJobIndex].ToPage;
        ps.Duplex = printingJobs[printingJobIndex].Mode;
        ps.PrintRange = Aspose.Pdf.Printing.PrintRange.SomePages;

        // Set paper size and margins
        pgs.PaperSize = Aspose.Pdf.Printing.PaperSizes.A4;
        ps.DefaultPageSettings.PaperSize = pgs.PaperSize;
        pgs.Margins = new Aspose.Pdf.Devices.Margins(0, 0, 0, 0);

        // Chain other print jobs at the end of the finished job
        viewer.EndPrint += (sender, args) =>
        {
            if (++printingJobIndex < printingJobs.Count)
            {
                // Set the next print job parameters
                ps.PrintFileName = Path.GetFullPath(printingJobs[printingJobIndex].OutputFile);
                ps.FromPage = printingJobs[printingJobIndex].FromPage;
                ps.ToPage = printingJobs[printingJobIndex].ToPage;
                ps.Duplex = printingJobs[printingJobIndex].Mode;

                // Run the next print job
                viewer.PrintDocumentWithSettings(pgs, ps);
            }
        };

        // Run the first print job
        viewer.PrintDocumentWithSettings(pgs, ps);
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET

struct PrintingJobSettings
{
    public int ToPage { get; set; }
    public int FromPage { get; set; }
    public string OutputFile { get; set; }
    public Aspose.Pdf.Printing.Duplex Mode { get; set; }
}

private static void PrintUsingSpoolerApi()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();

    int printingJobIndex = 0;
    var printingJobs = new List<PrintingJobSettings>();

    // Create multiple printing jobs to print different page ranges with different duplex settings
    var printingJob1 = new PrintingJobSettings();
    printingJob1.FromPage = 1;
    printingJob1.ToPage = 3;
    printingJob1.OutputFile = dataDir + "PrintUsingSpoolerApi_p1-3_out.xps";
    printingJob1.Mode = Aspose.Pdf.Printing.Duplex.Default;

    printingJobs.Add(printingJob1);

    PrintingJobSettings printingJob2 = new PrintingJobSettings();
    printingJob2.FromPage = 4;
    printingJob2.ToPage = 6;
    printingJob2.OutputFile = dataDir + "PrintUsingSpoolerApi_p4-6_out.xps";
    printingJob2.Mode = Aspose.Pdf.Printing.Duplex.Simplex;

    printingJobs.Add(printingJob2);

    PrintingJobSettings printingJob3 = new PrintingJobSettings();
    printingJob3.FromPage = 7;
    printingJob3.ToPage = 7;
    printingJob3.OutputFile = dataDir + "PrintUsingSpoolerApi_p7_out.xps";
    printingJob3.Mode = Aspose.Pdf.Printing.Duplex.Default;

    printingJobs.Add(printingJob3);

    // Create PdfViewer object
    using var viewer = new Aspose.Pdf.Facades.PdfViewer();

    // Bind PDF document
    viewer.BindPdf(dataDir + "Print-PageRange.pdf");

    // Set attributes for printing
    // Print the file with adjusted size
    viewer.AutoResize = true;
    // Print the file with adjusted rotation
    viewer.AutoRotate = true;
    // Do not produce the page number dialog when printing
    viewer.PrintPageDialog = false;

    // Create objects for printer and page settings
    var ps = new Aspose.Pdf.Printing.PrinterSettings();
    var pgs = new Aspose.Pdf.Printing.PageSettings();

    // Set printer name
    ps.PrinterName = "Microsoft XPS Document Writer";

    // Set output file name and PrintToFile attribute
    ps.PrintFileName = Path.GetFullPath(printingJobs[printingJobIndex].OutputFile);
    ps.PrintToFile = true;

    // Set parameters for the first print job
    ps.FromPage = printingJobs[printingJobIndex].FromPage;
    ps.ToPage = printingJobs[printingJobIndex].ToPage;
    ps.Duplex = printingJobs[printingJobIndex].Mode;
    ps.PrintRange = Aspose.Pdf.Printing.PrintRange.SomePages;

    // Set paper size and margins
    pgs.PaperSize = Aspose.Pdf.Printing.PaperSizes.A4;
    ps.DefaultPageSettings.PaperSize = pgs.PaperSize;
    pgs.Margins = new Aspose.Pdf.Devices.Margins(0, 0, 0, 0);

    // Chain other print jobs at the end of the finished job
    viewer.EndPrint += (sender, args) =>
    {
        if (++printingJobIndex < printingJobs.Count)
        {
            // Set the next print job parameters
            ps.PrintFileName = Path.GetFullPath(printingJobs[printingJobIndex].OutputFile);
            ps.FromPage = printingJobs[printingJobIndex].FromPage;
            ps.ToPage = printingJobs[printingJobIndex].ToPage;
            ps.Duplex = printingJobs[printingJobIndex].Mode;

            // Run the next print job
            viewer.PrintDocumentWithSettings(pgs, ps);
        }
    };

    // Run the first print job
    viewer.PrintDocumentWithSettings(pgs, ps);
}