Intermediate C# Course (How To)

This course builds on what we learned in C# Objects. We'll learn more essential principles of object-oriented programming as we improve the Treehouse Defense game.

What you'll learn

• Polymorphism
• Abstraction
• Interfaces
• System.Object
• Static classes

Polymorphism

We'll learn about overriding virtual methods and properties.

Chevron 11 steps

• Welcome

  3:09

• Review

  10:03

• Virtual Methods

  9:20

• Another Example

  3:09

• Virtual Methods

  3 objectives

• Virtual Properties

  4:37

• Virtual Properties

  1 objective

• Accessor Access Modifiers

  5:57

• Accessor Access Modifiers

  1 objective

• Override vs New

  6:07

• Polymorphism

  6 questions

System.Object

All classes inherit from System.Object. Let's learn all about it.

Chevron 11 steps

• Introducing System.Object

  2:28

• Object.ToString

  4:40

• Object.ToString

  1 objective

• System.Object

  2 questions

• Object Equality

  4:13

• Object.Equals

  3:40

• Object.Equals

  1 objective

• Object.GetHashCode

  5:05

• Object.GetHashCode

  1 objective

• Wrap Up

  2:42

• Object Equality

  2 questions

Abstraction

We'll create an abstract base class and an interface for developers to use when extending the Treehouse Defense game.

Chevron 12 steps

• Abstraction

  3:36

• Abstract Classes

  3:12

• Abstract Classes

  1 objective

• Abstract Members

  3:46

• Abstract Members

  1 objective

• Interfaces

  4:27

• Interfaces

  2 objectives

• Interfaces vs Abstract Classes

  4:57

• Composition

  9:07

• Static Classes

  5:11

• Wrap Up

  0:58

• Abstraction

  3 questions