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Process.ExitCode Property

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

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

'Declaration
Public ReadOnly Property ExitCode As Integer
'Usage
Dim instance As Process
Dim value As Integer

value = instance.ExitCode

/** @property */
public int get_ExitCode ()

public function get ExitCode () : int

Not applicable.

Property Value

The code that the associated process specified when it terminated.

Exception typeCondition

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.

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.

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. In either case, 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

         Try

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

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

                If Not myProcess.HasExited Then

                    ' Refresh the current process property values.
                    myProcess.Refresh()

                    Console.WriteLine()
                        
                    ' Display current process statistics.

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

                    Console.WriteLine("  physical memory usage: {0}", _
                         myProcess.WorkingSet64)
                    Console.WriteLine("  base priority: {0}", _
                         myProcess.BasePriority)
                    Console.WriteLine("  priority class: {0}", _
                         myProcess.PriorityClass)
                    Console.WriteLine("  user processor time: {0}", _
                         myProcess.UserProcessorTime)
                    Console.WriteLine("  privileged processor time: {0}", _
                         myProcess.PrivilegedProcessorTime)
                    Console.WriteLine("  total processor time: {0}", _
                         myProcess.TotalProcessorTime)

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

            Console.WriteLine()
            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}", _
                peakWorkingSet)
            Console.WriteLine("Peak paged memory usage of the process: {0}", _
                peakPagedMem)
            Console.WriteLine("Peak virtual memory usage of the process: {0}", _
                peakVirtualMem)

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

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

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

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