https://learn.microsoft.com/it-it/dotnet/api/system.componentmodel.asyncoperation.postoperationcompleted?view=netframework-4.8.1&viewFallbackFrom=net-8.0
AsyncOperation.PostOperationCompleted(SendOrPostCallback, Object) Method (System.ComponentModel) |...
Ends the lifetime of an asynchronous operation.
objectmethodsystem