Part 32 – C# Tutorial – Abstract classes in c#.avi

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9 responses to “Part 32 – C# Tutorial – Abstract classes in c#.avi”

1. Raghvendra Pratap Singh says:

   17/07/2013 at 9:40 am

   thanks a lot…ur videos are really helpful..

   Reply
2. qwertyguy76 says:

   17/07/2013 at 10:22 am

   Thank you soo much

   Reply
3. Satya Budhani says:

   17/07/2013 at 10:38 am

   very useful videos. Thank you.

   Reply
4. treasure2387 says:

   17/07/2013 at 11:11 am

   ChildClass C = new ChildClass()
   C.callMethodVirtual();

   or BaseClass B = new ChildClass();
   B.callMethodVirtual();

   But this can not be done
   BaseClass B = new BaseClass();
   B.callMethodVirtual();

   A sealed member can only be used in the Base class, can not be used in the Derived class.
   So an abstract sealed member is impossible.
   IF a class contains non-abstract variables and functions it can NOT be instantiated, it still has to be inherited by another class(I hate ABSTRACT)

   Reply
5. treasure2387 says:

   17/07/2013 at 11:31 am

   An abstract function does not have a body
   An abstract class can not be instantiated
   An abstract class can only be used as a Base Class(Inheritance)
   The child class has to provide the implementation for all the abstract members, otherwise you get an error.
   To provide the implementation in the child class you have to use the keyword: !! override !!
   If the child class is also abstract it doesnt have to implement the abstract members of the Base Class.

   Reply
6. Yolo Selski says:

   17/07/2013 at 11:59 am

   Thank you

   Reply
7. SuperMichielv says:

   17/07/2013 at 12:22 pm

   You can not create an object from an abstract class, but you can you use the static non abstract methods by calling classname.method() because there is implementation if the method itself is not abstract.

   Reply
8. baswaa raj says:

   17/07/2013 at 12:51 pm

   really very nice …

   Reply
9. oguzhanozhan says:

   17/07/2013 at 1:27 pm

   Thank you so much Bro,,You are the best so far…I am praying for you….Thanks…

   Reply