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GetProcesses Method (String)
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Process.GetProcesses Method (String)

Creates a new Process component for each process resource on the specified computer.

Namespace:  System.Diagnostics
Assembly:  System (in System.dll)

public static Process[] GetProcesses(
	string machineName
)

Parameters

machineName
Type: System.String

The computer from which to read the list of processes.

Return Value

Type: System.Diagnostics.Process[]
An array of type Process that represents all the process resources running on the specified computer.

ExceptionCondition
ArgumentException

The machineName parameter syntax is invalid. It might have length zero (0).

ArgumentNullException

The machineName parameter is null.

PlatformNotSupportedException

The operating system platform does not support this operation on remote computers.

InvalidOperationException

There are problems accessing the performance counter API's used to get process information. This exception is specific to Windows NT, Windows 2000, and Windows XP.

Win32Exception

A problem occurred accessing an underlying system API.

Use this method to create an array of new Process components and associate them with all the process resources on the specified (usually remote) computer. The process resources must already exist on the local computer, because GetProcesses does not create system resources but rather associates resources with application-generated Process components. Because the operating system itself is running background processes, this array is never empty.

If you do not want to retrieve all the processes running on the computer, you can restrict their number by using the GetProcessById or GetProcessesByName method. GetProcessById creates a Process component that is associated with the process identified on the system by the process identifier that you pass to the method. GetProcessesByName creates an array of Process components whose associated process resources share the executable file you pass to the method.

This overload of the GetProcesses method is generally used to retrieve the list of process resources running on a remote computer on the network, but you can specify the local computer by passing ".".

NoteNote

Multiple Windows services can be loaded within the same instance of the Service Host process (svchost.exe). GetProcesses does not identify those individual services; for that, see GetServices.

Windows 98, Windows Millennium Edition Platform Note: The machineName parameter is not supported on Windows 98 or Windows Millennium Edition (Windows Me).

The following example retrieves information of the current process, processes running on the local computer, all instances of Notepad running on the local computer, and a specific process on the local computer. It then retrieves information for the same processes on a remote computer.

using System;
using System.Diagnostics;
using System.ComponentModel;

namespace MyProcessSample
{
    class MyProcess
    {
        void BindToRunningProcesses()
        {
            // Get the current process.
            Process currentProcess = Process.GetCurrentProcess();

            // Get all processes running on the local computer.
            Process[] localAll = Process.GetProcesses();

            // Get all instances of Notepad running on the local computer. 
            // This will return an empty array if notepad isn't running.
            Process[] localByName = Process.GetProcessesByName("notepad");

            // Get a process on the local computer, using the process id. 
            // This will throw an exception if there is no such process.
            Process localById = Process.GetProcessById(1234);


            // Get processes running on a remote computer. Note that this 
            // and all the following calls will timeout and throw an exception 
            // if "myComputer" and 169.0.0.0 do not exist on your local network.

            // Get all processes on a remote computer.
            Process[] remoteAll = Process.GetProcesses("myComputer");

            // Get all instances of Notepad running on the specific computer, using machine name.
            Process[] remoteByName = Process.GetProcessesByName("notepad", "myComputer");

            // Get all instances of Notepad running on the specific computer, using IP address.
            Process[] ipByName = Process.GetProcessesByName("notepad", "169.0.0.0");

            // Get a process on a remote computer, using the process id and machine name.
            Process remoteById = Process.GetProcessById(2345, "myComputer");
        }

        static void Main()
        {
            MyProcess myProcess = new MyProcess();
            myProcess.BindToRunningProcesses();
        }
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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