The ReRegisterForFinalize method adds the obj parameter to the list of objects that request finalization before the garbage collector frees the object. The obj parameter must be the caller of this method.
Calling the ReRegisterForFinalize method does not guarantee that the garbage collector will call an object's finalizer.
By default, all objects that implement finalizers are added to the list of objects that require finalization; however, an object might have already been finalized or might have disabled finalization by calling the SuppressFinalize method.
A finalizer can use this method to resurrect itself or an object that it references.