Where does Printer live in the IronPrint API?

Printer is a static class in the IronPrint namespace, shipped in IronPrint.dll. Call its static Print, ShowPrintDialog, GetPrinterNames, and GetPrinterTrays methods directly; there is no instance to construct.

How do you print a file silently in C#?

Call Printer.Print with a file path or byte array. Printing is silent by default, so no dialog appears. Pass an optional PrintSettings to set the printer name, number of copies, and paper options.

How do you list the available printers in C#?

Call Printer.GetPrinterNames to get the installed printer names, or Printer.GetPrinterNamesAsync for the non-blocking form. Use Printer.GetPrinterTrays to list the trays for a named printer.

Class Printer

The Printer class allows you to easily print various file types including:

PDF
PNG
JPG
BMP
TIFF

You can achieve this by passing either a file path or file data as a byte[].

Call `Printer.Print()` for silent printing

Call `Printer.ShowPrintDialog()` for display the print dialog.

We also provide an `Async` functions to prevent the print operation from blocking your thread.

Inheritance

System.Object

Printer

Namespace: IronPrint

Assembly: IronPrint.dll

Syntax

public static class Printer : Object

Printer sends a document to a physical printer from C#, and it does so on Windows, macOS, Linux, Android, and iOS through one API. Hand it a file path or a byte[] of file data and it queues the job on the default printer or on one named through PrintSettings. Jobs print silently by default, so a server or background service can print with no user present.

The members fall into three groups. Printing methods (Print and PrintAsync) send a job straight to the device. The interactive methods (ShowPrintDialog and ShowPrintDialogAsync) open the operating system print dialog so the user picks the printer and options. The discovery methods (GetPrinterNames and GetPrinterTrays) list the printers and trays available on the machine. Because the class is static, there is nothing to construct: call the methods directly after rendering or loading the file you want on paper. Every printing and dialog call takes an optional PrintSettings, and each has an asynchronous form that returns a Task to keep the operation off the calling thread.

A typical job builds a PrintSettings, sets the values that matter, and passes it to Print. When the target device is not known ahead of time, call GetPrinterNames first and assign the chosen name to PrintSettings.PrinterName, or call ShowPrintDialog and let the user choose. Where blocking the thread is a concern, prefer PrintAsync or ShowPrintDialogAsync and await the returned Task. The print settings guide covers the options each call accepts.

using IronPrint;

PrintSettings settings = new PrintSettings { NumberOfCopies = 2 };
Printer.Print("invoice.pdf", settings);

The silent printing guide walks through unattended jobs, the print with dialog guide covers interactive printing, and the retrieve printer names guide shows how to enumerate devices first.

Methods

GetPrinterNames()

Retrieves a list of printer names available on the system.

Declaration

public static List<string> GetPrinterNames()

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of strings, each representing a printer name.

GetPrinterNamesAsync()

Asynchronously retrieves a list of printer names available on the system.

Declaration

public static Task<List<string>> GetPrinterNamesAsync()

Returns

Type	Description
System.Threading.Tasks.Task<System.Collections.Generic.List<System.String>>	The task result contains a list of strings, each representing a printer name.

GetPrinterTrays(String)

Retrieves a list of printer tray available on the specified printer, or for a default printer if no specific printer is provided.

Declaration

public static List<string> GetPrinterTrays(string printerName = null)

Parameters

Type	Name	Description
System.String	printerName	The name of the printer for which to retrieve tray information. Default `null` for a default printer

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of strings, each representing a tray name.

GetPrinterTraysAsync(String)

Asynchronously retrieves a list of printer tray available on the specified printer, or for a default printer if no specific printer is provided.

Declaration

public static Task<List<string>> GetPrinterTraysAsync(string printerName = null)

Parameters

Type	Name	Description
System.String	printerName	The name of the printer for which to retrieve tray information. Default `null` for a default printer

Returns

Type	Description
System.Threading.Tasks.Task<System.Collections.Generic.List<System.String>>	The task result contains a list of strings, each representing a tray name.

Print(Byte[], PrintSettings)

Silently print (without a dialog) from a PDF or an image file data.

Declaration

public static void Print(byte[] fileData, PrintSettings settings = null)

Parameters

Type	Name	Description
System.Byte[]	fileData	A PDF or an image file data in byte[]
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Remarks

Note: If this operation block your thread, Please use PrintAsync(Byte[], PrintSettings) instead

Note: In mobile, Silently print is not possible. This operation will show print dialog anyways

Print(String, PrintSettings)

Silently print (without a dialog) from a PDF or an image file path.

Declaration

public static void Print(string path, PrintSettings settings = null)

Parameters

Type	Name	Description
System.String	path	The path of a PDF or an image.
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Remarks

Note: If this operation block your thread, Please use PrintAsync(String, PrintSettings) instead

Note: In mobile, Silently print is not possible. This operation will show print dialog anyways

PrintAsync(Byte[], PrintSettings)

Silently print asynchronously (without a dialog) from a PDF or an image file data.

Declaration

public static Task PrintAsync(byte[] fileData, PrintSettings settings = null)

Parameters

Type	Name	Description
System.Byte[]	fileData	A PDF or an image file data in byte[]
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Returns

Type	Description
System.Threading.Tasks.Task	An awaitable task that starts printing.

Remarks

Note: In mobile, Silently print is not possible. This operation will show print dialog anyways

PrintAsync(String, PrintSettings)

Silently print asynchronously (without a dialog) from a PDF or an image file path.

Declaration

public static Task PrintAsync(string path, PrintSettings settings = null)

Parameters

Type	Name	Description
System.String	path	The path of a PDF or an image file.
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Returns

Type	Description
System.Threading.Tasks.Task	An awaitable task that starts printing.

Remarks

Note: In mobile, Silently print is not possible. This operation will show print dialog anyways

ShowPrintDialog(Byte[], PrintSettings)

Shows a print dialog asynchronously for a PDF or an image file data in byte[].

The visual and functional aspects of the print dialog may vary based on your platform.

Declaration

public static void ShowPrintDialog(byte[] fileData, PrintSettings settings = null)

Parameters

Type	Name	Description
System.Byte[]	fileData	A PDF or an image file data in byte[]
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Remarks

Note: If this operation block your thread, Please use ShowPrintDialogAsync(Byte[], PrintSettings) instead

ShowPrintDialog(String, PrintSettings)

Shows a print dialog for a PDF or an image path.

The visual and functional aspects of the print dialog may vary based on your platform.

Declaration

public static void ShowPrintDialog(string path, PrintSettings settings = null)

Parameters

Type	Name	Description
System.String	path	The path of a document.
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Remarks

Note: If this operation block your thread, Please use ShowPrintDialogAsync(String, PrintSettings) instead

ShowPrintDialogAsync(Byte[], PrintSettings)

Shows a print dialog asynchronously for a PDF or an image file data in byte[].

The visual and functional aspects of the print dialog may vary based on your platform.

Declaration

public static Task ShowPrintDialogAsync(byte[] fileData, PrintSettings settings = null)

Parameters

Type	Name	Description
System.Byte[]	fileData	A PDF or an image file data in byte[]
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Returns

Type	Description
System.Threading.Tasks.Task	An awaitable task that shows a printing dialog.

ShowPrintDialogAsync(String, PrintSettings)

Shows a print dialog asynchronously for a PDF or an image path.

The visual and functional aspects of the print dialog may vary based on your platform.

Declaration

public static Task ShowPrintDialogAsync(string path, PrintSettings settings = null)

Parameters

Type	Name	Description
System.String	path	The path of a document.
PrintSettings	settings	(Optional) The PrintSettings to use for printing.

Returns

Type	Description
System.Threading.Tasks.Task	An awaitable task that shows a printing dialog.