Process.ExitCode Property

Definition

Namespace:

System.Diagnostics

Assemblies:

netstandard.dll, System.Diagnostics.Process.dll

Source:

Process.cs

Gets the value that the associated process specified when it terminated.

C#

public int ExitCode { get; }

Property Value

Int32

The code that the associated process specified when it terminated.

Exceptions

InvalidOperationException

The process has not exited.

-or-

The process Handle is not valid.

NotSupportedException

You are trying to access the ExitCode property for a process that is running on a remote computer. This property is available only for processes that are running on the local computer.

Examples

The following example starts an instance of Notepad. The example then retrieves and displays various properties of the associated process. The example detects when the process exits, and displays the process's exit code.

C#

using System;
using System.Diagnostics;

namespace ProcessSample
{
    class ProcessMonitorSample
    {
        public static void Main()
        {
            // Define variables to track the peak
            // memory usage of the process.
            long peakPagedMem   = 0,
                 peakWorkingSet = 0,
                 peakVirtualMem = 0;

            // Start the process.
            using (Process myProcess = Process.Start("NotePad.exe"))
            {
                // Display the process statistics until
                // the user closes the program.
                do
                {
                    if (!myProcess.HasExited)
                    {
                        // Refresh the current process property values.
                        myProcess.Refresh();

                        Console.WriteLine();

                        // Display current process statistics.

                        Console.WriteLine($"{myProcess} -");
                        Console.WriteLine("-------------------------------------");

                        Console.WriteLine($"  Physical memory usage     : {myProcess.WorkingSet64}");
                        Console.WriteLine($"  Base priority             : {myProcess.BasePriority}");
                        Console.WriteLine($"  Priority class            : {myProcess.PriorityClass}");
                        Console.WriteLine($"  User processor time       : {myProcess.UserProcessorTime}");
                        Console.WriteLine($"  Privileged processor time : {myProcess.PrivilegedProcessorTime}");
                        Console.WriteLine($"  Total processor time      : {myProcess.TotalProcessorTime}");
                        Console.WriteLine($"  Paged system memory size  : {myProcess.PagedSystemMemorySize64}");
                        Console.WriteLine($"  Paged memory size         : {myProcess.PagedMemorySize64}");

                        // Update the values for the overall peak memory statistics.
                        peakPagedMem   = myProcess.PeakPagedMemorySize64;
                        peakVirtualMem = myProcess.PeakVirtualMemorySize64;
                        peakWorkingSet = myProcess.PeakWorkingSet64;

                        if (myProcess.Responding)
                        {
                            Console.WriteLine("Status = Running");
                        }
                        else
                        {
                            Console.WriteLine("Status = Not Responding");
                        }
                    }
                }
                while (!myProcess.WaitForExit(1000));

                Console.WriteLine();
                Console.WriteLine($"  Process exit code          : {myProcess.ExitCode}");

                // Display peak memory statistics for the process.
                Console.WriteLine($"  Peak physical memory usage : {peakWorkingSet}");
                Console.WriteLine($"  Peak paged memory usage    : {peakPagedMem}");
                Console.WriteLine($"  Peak virtual memory usage  : {peakVirtualMem}");
            }
        }
    }
}

Remarks

Use ExitCode to get the status that the system process returned when it exited. You can use the exit code much like an integer return value from a main() procedure.

The ExitCode value for a process reflects the specific convention implemented by the application developer for that process. If you use the exit code value to make decisions in your code, be sure that you know the exit code convention used by the application process.

Developers usually indicate a successful exit by an ExitCode value of zero, and designate errors by nonzero values that the calling method can use to identify the cause of an abnormal process termination. It is not necessary to follow these guidelines, but they are the convention.

If you try to get the ExitCode before the process has exited, the attempt throws an exception. Examine the HasExited property first to verify whether the associated process has terminated.

Бележка

When standard output has been redirected to asynchronous event handlers, it is possible that output processing will not have completed when HasExited returns true. To ensure that asynchronous event handling has been completed, call the WaitForExit() overload that takes no parameter before checking HasExited.

You can use the CloseMainWindow or the Kill method to cause an associated process to exit.

There are two ways of being notified when the associated process exits: synchronously and asynchronously. Synchronous notification relies on calling the WaitForExit method to pause the processing of your application until the associated component exits. Asynchronous notification relies on the Exited event. When using asynchronous notification, EnableRaisingEvents must be set to true for the Process component to receive notification that the process has exited.

Applies to

See also

• HasExited
• CloseMainWindow()
• Kill()
• WaitForExit(Int32)
• EnableRaisingEvents