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Environment.FailFast Method

Terminates a process but does not execute any active try-finally blocks or finalizers.

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

'Declaration
Public Shared Sub FailFast ( _
	message As String _
)
'Usage
Dim message As String

Environment.FailFast(message)
public static void FailFast (
	String message
)
public static function FailFast (
	message : String
)
Not applicable.

Parameters

message

A message that explains why the process was terminated, or a null reference (Nothing in Visual Basic) if no explanation is provided.

The FailFast method writes a log entry to the Windows Application event log using the message parameter, creates a dump of your application, and then terminates the current process.

Use the FailFast method instead of the Exit method to terminate your application if the state of your application is damaged beyond repair, and executing your application's try-finally blocks and finalizers will corrupt program resources. The FailFast method terminates the current process and executes any CriticalFinalizerObject objects, but does not execute any active try-finally blocks or finalizers.

The following code example writes a log entry to the Windows Application event log and terminates the current process.


' This code example demonstrates the Environment.FailFast() 
' method.

Imports System

Class Sample
    Public Shared Sub Main() 
        Dim causeOfFailure As String = "A castrophic failure has occured."
        
        ' Assume your application has failed catastrophically and must 
        ' terminate immediately. The try-finally block is not executed 
        ' and is included only to demonstrate that instructions within 
        ' try-catch blocks and finalizers are not performed.

        Try
            Environment.FailFast(causeOfFailure)
        Finally
            Console.WriteLine("This finally block will not be executed.")
        End Try
    
    End Sub 'Main
End Class 'Sample

'
'This code example produces the following results:
'
'(No output is produced because the application is terminated. However, 
'an entry is made in the Windows Application event log, and the log 
'entry contains the text from the causeOfFailure variable.)
'

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, 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

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