Process.ExitCode Property

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

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

<BrowsableAttribute(False)> _
<MonitoringDescriptionAttribute("ProcessExitCode")> _
Public ReadOnly Property ExitCode As Integer

Property Value

Type: System.Int32
The code that the associated process specified when it terminated.


The process has not exited.


The process Handle is not valid.


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.

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.


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.

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.

Imports System
Imports System.Diagnostics

Namespace ProcessSample
    Class ProcessMonitorSample

        Public Shared Sub Main()

            ' Define variables to track the peak 
            ' memory usage of the process. 
            Dim peakPagedMem As Long = 0
            Dim peakWorkingSet As Long = 0
            Dim peakVirtualMem As Long = 0

            Dim myProcess As Process = Nothing 


                ' Start the process.
                myProcess = Process.Start("NotePad.exe")

                ' Display process statistics until 
                ' the user closes the program. 

                    If Not myProcess.HasExited Then 

                        ' Refresh the current process property values.


                        ' Display current process statistics.

                        Console.WriteLine("{0} -", myProcess.ToString())

                        Console.WriteLine("  physical memory usage: {0}", _
                        Console.WriteLine("  base priority: {0}", _
                        Console.WriteLine("  priority class: {0}", _
                        Console.WriteLine("  user processor time: {0}", _
                        Console.WriteLine("  privileged processor time: {0}", _
                        Console.WriteLine("  total processor time: {0}", _
                        Console.WriteLine("  PagedSystemMemorySize64: {0}", _
                        Console.WriteLine("  PagedMemorySize64: {0}", _

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

                        If myProcess.Responding Then
                            Console.WriteLine("Status = Running")
                            Console.WriteLine("Status = Not Responding")
                        End If 
                    End If 
                Loop While Not myProcess.WaitForExit(1000)

                Console.WriteLine("Process exit code: {0}", myProcess.ExitCode)

                ' Display peak memory statistics for the process.
                Console.WriteLine("Peak physical memory usage of the process: {0}", _
                Console.WriteLine("Peak paged memory usage of the process: {0}", _
                Console.WriteLine("Peak virtual memory usage of the process: {0}", _

                If Not myProcess Is Nothing Then
                End If 
            End Try 
        End Sub 'Main
    End Class 
End Namespace

.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

  • LinkDemand 

    for full trust for the immediate caller. This member cannot be used by partially trusted code.

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