This is a presentation I did for the Cedar Rapids .NET User Group (CRineta.org). It was intended to present object oriented concepts and their application in .NET and C#.

1. Object Oriented Programming in .NET Presented by Greg Sohl © 2004, Gregory M. Sohl

17. Solution Project X Project Y Class A Class B Class C Class M Class N private int a; protected int b; internal int c; protected internal int d; public int e; Derived from A Derived from A

18. Demonstration Class Members Take a look at the various types of class members.

20. Demonstration Value Types vs. Reference Types Compare the behavior of value type and reference type variables.

22. Solution Project X Project Y Class A Class B Class C Class M Class N private int a; protected int b; internal int c; protected internal int d; public int e; Derived from A Derived from A

23. Demonstration Class Inheritance Show how classes can inherit the members of other classes, creating a base class, child class relationship.

25. Demonstration Polymorphism Shows treating derived classes as base classes and the dynamicity of overridden functionality.

27. Demonstration Abstract Classes Showing how an abstract class is implemented and derived from.

29. Demonstration Interfaces Showing how an interface is defined and implemented by a class.

35. Thank You! Questions?