grabage collector

there are two types of Garbage Collector

managed garbage collector

see we will declaring variable object .. etc in our programes..once this kind of

variable object goes out of the scope they are put into the heap and they r checked r the further existence . once its beeing no longer used garbage collector wil deallcate mem for the that variable and objects.

Umanaged garbage collector

this was done mannually and u will be happen to open a connection with database will be open the file .etc. while this kind of the thing goes out of the scope

we have to explicitly call the garage colector by calling the closecommand of the datbase ...once te connection is closed it puts this memmory ino the heep .. and process follws the same

FYI .net doesn't support the mutiple inheritance perhaps you may talk about multi-level inheritance.

In the later case if a class is inherited from another class at the time of creating instance it will obviously give a call to its base class constructor (ie bottom - top approach). Like wise the constructor execution is takes place in top down approach (ie. base class constructor is executed and the derived class constructor is executed).

So for GC it will collect only when an object does not have any reference. As we see previously the derived is constructed based on base class. There is a reference is set to be. Obviously GC cannot be collected.