What is the significance of finalize method in .net

In particular, you should note that calling Finalize is nondeterministic in time. This may postpone the release of resources the object holds and threaten the scalability and performance of the application. There are, however, ways to provide deterministic object finalization, addressed later in this chapter.

To end this section, here are a number of points to be mindful of when implementing the Finalize method:. Note that the canonical. NET type System. Object has a do-nothing, protected Finalize method so that you can always call it, regardless of whether your base classes actually provide their own Finalize methods. Make sure to define Finalize as a protected method. Avoid defining Finalize as a private method, because that precludes your subclasses from calling your Finalize method.

Interestingly enough,. Finalization must not rely on thread affinity to do the cleanup. Thread affinity is the assumption by a component designer that an instance of the component will always run on the same thread although different objects can run on different threads.

Finalize will be called on a garbage-collection thread, not on any user thread. Thus, you will be unable to access any of your resources that are thread-specific, such as thread local storage or thread-relative static variables. Finalization must not rely on a specific order e. The two objects may be added to the finalization queue in any order. Because these points are generic enough to apply to every class, the C compiler has built-in support for generating template Finalize code.

For example, for this C class definition:. If you try to define both a destructor and a Finalize method, the compiler generates a compilation error. Finally, in the case of a class hierarchy, if all classes have destructors, the compiler-generated code calls every destructor, in order, from that of the lowest subclass to that of the topmost base class.

Skip to main content. Start your free trial. Object Finalization. Explicit Garbage Collection. Why is it preferred to not use finalize for clean up Why is it preferred to not use finalize for clean up? Problem with finalize is that garbage collection has to make two rounds in order to remove objects which have finalize methods. Below figure will make things clear regarding the two rounds of garbage collection rounds performed for the objects ha How can we suppress a finalize method How can we suppress a finalize method?

Dispose method belongs to IDisposable interface. We had seen in the previous section how bad it can be to override the finalize method for writing the cleaning of unmanaged resources.

So if any object wants to release its unmanaged code best is to implement IDispos In what instances you will declare a constructor to be private In what instances you will declare a constructor to be private? When we create a private constructor, we can not create object of the class directly from a client. So you will use private constructors when you do not want instances of the class to be created by any external client.

What is Operator Overloading in. This allows programmers to make their custom types look and feel like simp What is nested Classes What is nested Classes?

Nested classes are classes within classes. Techopedia Terms. Connect with us. Sign up. Term of the Day. Best of Techopedia weekly. News and Special Offers occasional. Techopedia Explains Finalize. What Does Finalize Mean? Techopedia Explains Finalize While finalize is designed to be implicitly called by GC, the dispose method may be explicitly called by user code to free resources. Share this Term. Related Terms. C Programming Language Code Object.