PerformanceCounter.RemoveInstance Method
Definition
Important
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Deletes the category instance specified by the PerformanceCounter object InstanceName property.
public:
void RemoveInstance();
public void RemoveInstance ();
member this.RemoveInstance : unit -> unit
Public Sub RemoveInstance ()
Exceptions
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.
An error occurred when accessing a system API.
Remarks
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.
Note
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.
Note
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.
Applies to
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