[c#] How to get the list of all printers in computer

I need to get the list of all printers that connect to computer?

How I can do it in C#, WinForms?

You can also use the LocalPrintServer class. See: System.Printing.LocalPrintServer

    public List<string>  InstalledPrinters
    {
        get
        {
            return (from PrintQueue printer in new LocalPrintServer().GetPrintQueues(new[] { EnumeratedPrintQueueTypes.Local,
                EnumeratedPrintQueueTypes.Connections }).ToList()
                    select printer.Name).ToList(); 
        } 
    }

As stated in the docs: Classes within the System.Printing namespace are not supported for use within a Windows service or ASP.NET application or service.

If you need more information than just the name of the printer you can use the System.Management API to query them:

var printerQuery = new ManagementObjectSearcher("SELECT * from Win32_Printer");
foreach (var printer in printerQuery.Get())
{
    var name = printer.GetPropertyValue("Name");
    var status = printer.GetPropertyValue("Status");
    var isDefault = printer.GetPropertyValue("Default");
    var isNetworkPrinter = printer.GetPropertyValue("Network");

    Console.WriteLine("{0} (Status: {1}, Default: {2}, Network: {3}", 
                name, status, isDefault, isNetworkPrinter);
}

If you are working with MVC C#, this is the way to deal with printers and serial ports for dropdowns.

using System.Collections.Generic;
using System.Linq;
using System.IO.Ports;
using System.Drawing.Printing;

    public class Miclass
    {
        private void AllViews()
        {
            List<PortClass> ports = new List<PortClass>();
            List<Printersclass> Printersfor = new List<Printersclass>();
            string[] portnames = SerialPort.GetPortNames();
            /*PORTS*/
            for (int i = 0; i < portnames.Count(); i++)
            {
                ports.Add(new PortClass() { Name = portnames[i].Trim(), Desc = portnames[i].Trim() });
            }
            /*PRINTER*/
            for (int i = 0; i < PrinterSettings.InstalledPrinters.Count; i++)
            {
                Printersfor.Add(new Printersclass() { Name = PrinterSettings.InstalledPrinters[i].Trim(), Desc = PrinterSettings.InstalledPrinters[i].Trim() });
            }
        }
    }
    public class PortClass
    {
        public string Name { get; set; }
        public string Desc { get; set; }

        public override string ToString()
        {
            return string.Format("{0} ({1})", Name, Desc);
        }
    }
    public class Printersclass
    {
        public string Name { get; set; }
        public string Desc { get; set; }

        public override string ToString()
        {
            return string.Format("{0} ({1})", Name, Desc);
        }
    }

Look at the static System.Drawing.Printing.PrinterSettings.InstalledPrinters property.

It is a list of the names of all installed printers on the system.

Get Network and Local Printer List in ASP.NET

This method uses the Windows Management Instrumentation or the WMI interface. It’s a technology used to get information about various systems (hardware) running on a Windows Operating System.

private void GetAllPrinterList()
        {
            ManagementScope objScope = new ManagementScope(ManagementPath.DefaultPath); //For the local Access
            objScope.Connect();

            SelectQuery selectQuery = new SelectQuery();
            selectQuery.QueryString = "Select * from win32_Printer";
            ManagementObjectSearcher MOS = new ManagementObjectSearcher(objScope, selectQuery);
            ManagementObjectCollection MOC = MOS.Get();
            foreach (ManagementObject mo in MOC)
            {
                lstPrinterList.Items.Add(mo["Name"].ToString());
            }
        }

Click here to download source and application demo

Demo of application which listed network and local printer