How to get the current ProcessID?

Question

What's the simplest way to obtain the current process ID from within your own application, using the .NET Framework?

True. I guess something went wrong here :D @VictorYarema – Deniz Jun 03 '20 at 15:36 — Deniz, Jun 03 '20 at 15:36

score 133 · Accepted Answer · edited Jan 19 '15 at 11:31

133

Get a reference to the current process and use System.Diagnostics's Process.Id property:

int nProcessID = Process.GetCurrentProcess().Id;

edited Jan 19 '15 at 11:31

Patrick Hofman

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answered Jun 09 '10 at 08:00

luvieere

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using System.Diagnostics; or System.Diagnostics.Process.GetCurrentProcess().Id; I always protect myself and assume that current or future policy rules will restrict this call in some locked down or restrictive mode because it access the process areas. – Sql Surfer Jul 31 '16 at 14:29

Joe · Answer 2 · 2020-03-04T20:50:52.663

Process.GetCurrentProcess().Id

Or, since the Process class is IDisposable, and the Process ID isn't going to change while your application's running, you could have a helper class with a static property:

public static int ProcessId
{
    get 
    {
        if (_processId == null)
        {
            using(var thisProcess = System.Diagnostics.Process.GetCurrentProcess())
            {
                _processId = thisProcess.Id;
            }
        }
        return _processId.Value;
    }
}
private static int? _processId;

score 17 · Answer 3 · answered Jul 14 '20 at 14:26

The upcoming .NET 5 introduces Environment.ProcessId which should be preferred over Process.GetCurrentProcess().Id as it avoids allocations and the need to dispose the Process object.

https://devblogs.microsoft.com/dotnet/performance-improvements-in-net-5/ shows a benchmark where Environment.ProcessId only takes 3ns instead of 68ns with Process.GetCurrentProcess().Id.

How to get the current ProcessID?

3 Answers3

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