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RemoveInstance Method

PerformanceCounter.RemoveInstance Method

Deletes the category instance specified by the PerformanceCounter object InstanceName property.

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

public void RemoveInstance ()
public void RemoveInstance ()
public function RemoveInstance ()

Exception typeCondition

InvalidOperationException

This counter is read-only, so any instance that is associated with the category cannot be removed.

-or-

The instance is not correctly associated with a performance counter.

-or-

The InstanceLifetime property is set to Process when using global shared memory.

Win32Exception

An error occurred when accessing a system API.

PlatformNotSupportedException

The platform is Windows 98 or Windows Millennium Edition (Me), which does not support performance counters.

You can remove an instance only for a custom counter. All system counters are read-only, so attempting to remove one of them throws an exception.

NoteNote

To avoid a possible race condition when the performance counter shared memory is released, it is recommended that the RemoveInstance method be called from the DomainUnload event handler.

To create a performance category instance, specify an instanceName on the PerformanceCounter constructor. If the category instance specified by instanceName already exists the new object will reference the existing category instance.

NoteNote

If the value for the InstanceLifetime property is Process and the performance counter category was created with .NET Framework version 1.0 or 1.1, an InvalidOperationException is thrown. Performance counter categories created with earlier versions use global shared memory, and the value for InstanceLifetime must be Global. If the category is not used by applications running on versions 1.0 or 1.1 of the .NET Framework, delete and recreate the category.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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