如何在 C# 中靜默列印 PDF 及其他文件

using IronPrint;

// Print a PDF silently to the default printer
Printer.Print("quarterly-report.pdf");

// Print from a byte array (e.g., retrieved from a database or API)
byte[] pdfData = File.ReadAllBytes("shipping-label.pdf");
Printer.Print(pdfData);

Imports IronPrint

' Print a PDF silently to the default printer
Printer.Print("quarterly-report.pdf")

' Print from a byte array (e.g., retrieved from a database or API)
Dim pdfData As Byte() = File.ReadAllBytes("shipping-label.pdf")
Printer.Print(pdfData)

using IronPrint;

// Configure detailed print settings
var settings = new PrintSettings
{
    PrinterName = "HP LaserJet Pro",
    PaperSize = PaperSize.A4,
    Orientation = PaperOrientation.Portrait,
    DPI = 300,
    NumberOfCopies = 2,
    Grayscale = false,
    PaperMargins = new Margins(10, 10, 10, 10)
};

// Print with custom settings — still silent, no dialog
Printer.Print("monthly-summary.pdf", settings);

Imports IronPrint

' Configure detailed print settings
Dim settings As New PrintSettings With {
    .PrinterName = "HP LaserJet Pro",
    .PaperSize = PaperSize.A4,
    .Orientation = PaperOrientation.Portrait,
    .DPI = 300,
    .NumberOfCopies = 2,
    .Grayscale = False,
    .PaperMargins = New Margins(10, 10, 10, 10)
}

' Print with custom settings — still silent, no dialog
Printer.Print("monthly-summary.pdf", settings)

using IronPrint;

string[] invoices = Directory.GetFiles(@"C:\Invoices\Pending", "*.pdf");

var settings = new PrintSettings
{
    PrinterName = "Accounting Printer",
    NumberOfCopies = 1,
    Grayscale = true
};

int successCount = 0;
foreach (string invoice in invoices)
{
    try
    {
        Printer.Print(invoice, settings);
        successCount++;
        Console.WriteLine($"Printed: {Path.GetFileName(invoice)}");
    }
    catch (Exception ex)
    {
        Console.WriteLine($"Failed: {Path.GetFileName(invoice)} — {ex.Message}");
    }
}
Console.WriteLine($"Batch complete: {successCount}/{invoices.Length} documents printed.");

Imports IronPrint

Dim invoices As String() = Directory.GetFiles("C:\Invoices\Pending", "*.pdf")

Dim settings As New PrintSettings With {
    .PrinterName = "Accounting Printer",
    .NumberOfCopies = 1,
    .Grayscale = True
}

Dim successCount As Integer = 0
For Each invoice As String In invoices
    Try
        Printer.Print(invoice, settings)
        successCount += 1
        Console.WriteLine($"Printed: {Path.GetFileName(invoice)}")
    Catch ex As Exception
        Console.WriteLine($"Failed: {Path.GetFileName(invoice)} — {ex.Message}")
    End Try
Next
Console.WriteLine($"Batch complete: {successCount}/{invoices.Length} documents printed.")

using IronPrint;

// Non-blocking silent print
await Printer.PrintAsync("report.pdf");

// Async batch printing
string[] files = Directory.GetFiles(@"C:\Reports", "*.pdf");
foreach (string file in files)
{
    await Printer.PrintAsync(file);
}

Imports IronPrint

' Non-blocking silent print
Await Printer.PrintAsync("report.pdf")

' Async batch printing
Dim files As String() = Directory.GetFiles("C:\Reports", "*.pdf")
For Each file As String In files
    Await Printer.PrintAsync(file)
Next