[killerdoob420]

This tutorial will explain inheritance and virtual methods and how to use them in C#(im assuming you have a basic knowledge of oop concepts). Inhertance is when a class uses another class has a base and aquires all its variables and methods, take this class for example:

Code

class Derp
    {
  public int var;
  public void Write(string text)
  {
    Console.Write(text);
  }
    }

this next class uses that one a base( it inherits from it)

Code

class Herp : Derp
    {
  public void WriteLine(string text)
  {
    Write(text + "\n");
  }
    }

[IMG]http://i37.[censored].com/fxax5u.png[/IMG]
As you can see the class Herp contains the method and varible from its base class as well has the other method we added to it.

---

Virtual methods are a way of changing the behavior of inherited methods:

Code

class Derp
    {
  public virtual void DoWork()
  {
    Console.WriteLine("Doing base class work");
  }
    }

Code

class Herp : Derp
    {
  public override void DoWork()
  {
    Console.WriteLine("Doing inherited class work");
    base.DoWork();
  }
    }

As you can see the inherited class is overriding the virtual method DoWork, the line 'base.DoWork();' calls the original DoWork method from the base class so the output of DoWork from the class Herp would be:
Doing inherited class work
Doing base class work

please leave a comment if you liked this tutorial or if you have any problems or questions about it

[laptopguy]

Very nice tutorial. Not the biggest but it's straight to the point and informative. Nice one, and rated 5 stars 😝

[killerdoob420]

Very nice tutorial. Not the biggest but it's straight to the point and informative. Nice one, and rated 5 stars 😝

thanks, i tried to be a clear as possible

[enacje]

the problem with this kind of subjects is that it is kinda hard to explain when to use it. I'm working on a polymorphism tutorial but I can't think of some good examples when to use it on a way people understand it :P

Same for you you didn't mention when and why you should use it

[killerdoob420]

the problem with this kind of subjects is that it is kinda hard to explain when to use it. I'm working on a polymorphism tutorial but I can't think of some good examples when to use it on a way people understand it :P

Same for you you didn't mention when and why you should use it

I use this alot for games, but polymorphism is a tricky one 😧

[laptopguy]

I use this alot for games, but polymorphism is a tricky one 😧

Could you give an example in how to use this in a standard Windows Application ? Like what is it's values ?

[killerdoob420]

Could you give an example in how to use this in a standard Windows Application ? Like what is it's values ?

well i guess you could use it for user profiles or something, i can code and actuall example if you like

[laptopguy]

well i guess you could use it for user profiles or something, i can code and actuall example if you like

Sure, that would be good mate.

[b0tn3rd]

Well the typical example of the usecase is in multiple implementations of things that act alike:

e.g. 5 different types of buttons...
e.g. 5 different commands called from a single parser.

Make a bassclass IrcCommand.

Make a derived class IrcCommandScan
Make a derived class IrcCommandDownload

Make a string map to IrcCommand reference and register your implementations there. Makes it easy to have your commands extendable without having a huge if then else clause...

[killerdoob420]

bringing some of my old tuts up

[killerdoob420]

                                                      

[eliteh4xer]

Constructor Can't Be Inherited Why