Whether you want to use C# to build web apps, mobile apps, desktop apps or games, understanding C# classes, interfaces and principles of object-oriented programming is crucial.
This course is the second part of Mosh's best-selling C# series and is all about classes, interfaces and object-oriented programming. In essence, you'll learn:
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Whether you want to use C# to build web apps, mobile apps, desktop apps or games, understanding C# classes, interfaces and principles of object-oriented programming is crucial.
This course is the second part of Mosh's best-selling C# series and is all about classes, interfaces and object-oriented programming. In essence, you'll learn:
Whether you want to use C# to build web apps, mobile apps, desktop apps or games, understanding C# classes, interfaces and principles of object-oriented programming is crucial.
This course is the second part of Mosh's best-selling C# series and is all about classes, interfaces and object-oriented programming. In essence, you'll learn:
- How to work with classes, constructors, fields, properties, methods and indexers
- How to use encapsulation to reduce the impact of change
- How to improve the robustness of your code
- How to re-use code using inheritance and composition
- Why composition is better than inheritance
- How to build extensible applications using polymorphism
- How to develop loosely-coupled, extensible and testable applications using interfaces
Why would you want to take this course?
The answer is simple: quality of teaching.
Mosh is a passionate software engineer with over 13 years of experience developing applications in C#. He is the author of several best-selling C# courses on Udemy and knows how to lead you through a series of baby steps in a logical way.
So, from the very beginning to the very end, you'll be confident that you'll be in good hands and watching every minute of the course, unlike the reading many free tutorials and videos, does not waste your precious time.
Each section is equipped with a balanced mix of theory and practice. At the end of each section you'll get exercises to master the concepts you learn in that section.
And one last reason: all videos are produced with high quality video/audio, to provide you the best learning experience.
I owe a lot of it to you because your courses have been May God bless you and your efforts to create high quality courses. This has really changed my life from working as a security guard and doing websites for free, now I am a professional." -Danish Jafri
"Your courses have given me the confidence to get out of my dead end job and apply for a full time coding job. I am very happy to say that I just finished the job interview and they gave me the job. " -Dan Farnell
"Outstanding quality. I have come to learn that all Mosh's courses are top notch. This course is no different. The content is beautifully designed, well organized with great examples, and delivered in a clear and concise manner (with great video and audio quality). I also loved that this course includes exercises. Fantastic stuff. " -Roger Sæle
"Love it. This guy definitely knows what he's talking about. He strives to make his courses as comprehensive as possible and he teaches you several tricks along the way." -Jeb Watson
"As with all of his courses his passion and love for programming is infectious. He does a great job of intermixing theory with hard examples and cautions with practicality. If you learn better by watching and examples then reading and theory this is a must watch to move beyond the learning the syntax of c#." -Michael Paul
"Excellent course. All of Mosh's courses are very much worth taking if you really want to learn C# in a professional way. Not only does Mosh clearly describe the syntax of the language and explain the language concepts, but he also constantly emphasizes the importance of good programming practices" -Tony Zampini
NET Framework in 2002). Mosh is a full-time developer and what you are going to learn in this course is the result of his day-to-day work as a hardcore programmer along with years of studying,
100% MONEY- Take the course, go through the lectures, do the exercises, and if you're not happy, ask for a refund within 30 days. All your money back, no questions asked.
So do you want to take your C# skills to the next level? Then take this course now and get started.
Here's a deal for you
UDEAFNULP2024
What's inside
Learning objectives
- Work with classes, constructors, fields, properties, methods and indexers
- Use encapsulation to improve the robustness of the code and reduce the impact of change
- Re-use code using inheritance and composition
- Understand the problems with inheritance and how composition solves these problems
- Change the behaviour of an application by extending its code, rather than changing it
- Develop loosely-coupled, testable and extensible applications using interfaces
- Work with classes, constructors, fields, properties, methods and indexers
- Use encapsulation to improve the robustness of the code and reduce the impact of change
- Re-use code using inheritance and composition
- Understand the problems with inheritance and how composition solves these problems
- Change the behaviour of an application by extending its code, rather than changing it
- Develop loosely-coupled, testable and extensible applications using interfaces
Syllabus
About this Course
What You are Going to Learn
Who is Your Instructor
Source Code
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Syllabus
- What are classes and why we need them
- What is the difference between a class and object
- How to create classes, fields and methods
- The var keyword
- Static members
- How to quickly initialize objects without a constructor
- What is method signature
- What is method overloading
- Method parameter modifiers: params, out and ref
- Why ref is a smell in the design of C# and why you should avoid it.
- Defensive programming and how it improves the robustness of your applications.
- Two ways to initialize fields (directly and via constructor) and the pros and cons of each
- The readonly modifier and how it improves the robustness of your code
- Public and Private access modifiers
- What is encapsulation?
- Why we should declare fields as private and provider public accessors
- What are properties and how to create them
- A quick way to create a property
- What are indexers, how they are useful and how to create them
- The Dictionary type
- What is class coupling
- What are tightly coupled and loosely coupled applications like
- Three ways to reduce coupling
- What is inheritance
- An example of inheritance in a real-world scenario: building an application like Power Point
- How to represent inheritance using UML
- How to re-use code using inheritance
- What is composition
- An example of composition in a real-world scenario: DbMigrator and Logger
- How to represent composition using UML
- How to create a composition relationship between classes in C#
- Why inheritance can easily be abused by amateur designers / developers
- Problems with inheritance hierarchies
- Why inheritance results in tight coupling between classes
- How composition provides a more flexible and loosely coupled design
- Why access modifiers are important and how they help writing better code
- Examples of public, private, protected, internal and protected internal
- Why protected breaks encapsulation and it's better to be avoided
- Rules about constructors in inheritance hierarchies
- The base keyword and how we can use that to pass control to base class constructors
- What is upcasting and down casting
- Rules about casting an object to a base or derived class reference
- The as and is keywords
- StreamReader and ArrayList classes
- What are value types and reference types
- What is boxing and unboxing
- Why boxing and unboxing comes with a performance penalty
- Why generic lists are better to use than ArrayList
- What is polymorphism and how we can achieve it by method overriding
- The virtual and override keywords
- How to get rid of long switch/case or if/else statements and re-write them in an object-oriented way with polymorphism
- What are abstract classes and members
- The abstract and override keywords
- Rules about abstract classes and inheriting from them
- When to use abstract classes
- What are sealed classes and members
- The sealed modifier
- Introduction to Unit Testing with MS Tests framework
- How interfaces improve the testability of your applications
I'll show you how we can change an application's behaviour without changing its code, simply by using interfaces as extensibility points. I'll also introduce you to the open-closed principle of object-oriented programming.
One of the common misconceptions about interfaces is that they are used for implementing multiple inheritance. This view is fundamentally wrong yet there are many books, videos and posts that make such claim. In this video I'll explain why interfaces got nothing to do with inheritance, single or multiple.
Interfaces provide polymorphic behaviour, which is extremely powerful. In this video, you'll see how we can use an interfaces in a polymorphic way to design a loosely-coupled and extensible application.
Good to know
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Activities
Compile a glossary of key terms
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Creating a glossary will help you memorize and understand the key terms used in this course.
Browse courses on
Classes
Show steps
-
Review course materials and identify key terms.
-
Define each term in your own words.
-
Organize the terms alphabetically or by topic.
Seek out a mentor
Show steps
Finding a mentor can provide you with guidance and support throughout your learning journey.
Show steps
-
Identify individuals in the field you would like to learn from.
-
Attend industry events or meetups to connect with potential mentors.
-
Reach out to individuals and express your interest in mentorship.
Review basic programming concepts
Show steps
Revisiting basic programming concepts will provide a strong foundation for understanding the more advanced topics covered in this course.
Browse courses on
Variables
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-
Review online tutorials or documentation on basic programming concepts.
-
Complete practice problems to reinforce your understanding.
Seven other activities
Expand to see all activities and additional details
Show all ten activities
Read Head First Java
Show steps
This book provides a comprehensive overview of Java and object-oriented programming concepts, which will complement the topics covered in this course.
View
Head First Java: A Brain-Friendly Guide
on Amazon
Show steps
-
Obtain a copy of the book.
-
Read one chapter per week.
-
Take notes and highlight important concepts.
Join a study group
Show steps
Collaborating with peers can provide a supportive environment for learning and help you stay motivated.
Show steps
-
Reach out to classmates and form a study group.
-
Set regular meeting times and discuss course materials.
-
Share notes and quiz each other.
Review tutorials on inheritance
Show steps
Watching tutorials can provide an alternative perspective on the concepts covered in this course and help you reinforce your understanding.
Browse courses on
Inheritance
Show steps
-
Search for tutorials on inheritance.
-
Select a tutorial that aligns with your learning style.
-
Watch the tutorial and take notes.
Work through practice problems
Show steps
Practicing with sample problems will help you apply the concepts you learn in this course and identify areas where you need more support.
Browse courses on
Classes
Show steps
-
Identify a problem set related to the topic you are studying.
-
Set a timer for 30 minutes.
-
Solve as many problems as you can within the time limit.
-
Review your answers and identify any errors.
Implement a class in your favorite programming language
Show steps
Building a class from scratch will help you solidify your understanding of their structure and functionality.
Browse courses on
Classes
Show steps
-
Choose a class to implement.
-
Design the class interface, including properties, methods, and constructors.
-
Implement the class and test it thoroughly.
Build a simple application using object-oriented principles
Show steps
Applying your knowledge to build a real-world project will help you synthesize and retain the concepts covered in this course.
Browse courses on
Classes
Show steps
-
Define the requirements and design for your application.
-
Implement the application using object-oriented principles.
-
Test and debug your application.
Volunteer to mentor students struggling with the course
Show steps
Mentoring others can not only strengthen your understanding of the course material but also positively impact your peers' learning experience.
Show steps
-
Reach out to your instructor or classmates to express your interest in mentoring.
-
Identify students who could benefit from your support.
-
Provide guidance and support on course-related topics.
Compile a glossary of key terms
Show steps
Creating a glossary will help you memorize and understand the key terms used in this course.
Browse courses on
Classes
Show steps
- Review course materials and identify key terms.
- Define each term in your own words.
- Organize the terms alphabetically or by topic.
Seek out a mentor
Show steps
Finding a mentor can provide you with guidance and support throughout your learning journey.
Show steps
- Identify individuals in the field you would like to learn from.
- Attend industry events or meetups to connect with potential mentors.
- Reach out to individuals and express your interest in mentorship.
Review basic programming concepts
Show steps
Revisiting basic programming concepts will provide a strong foundation for understanding the more advanced topics covered in this course.
Browse courses on
Variables
Show steps
- Review online tutorials or documentation on basic programming concepts.
- Complete practice problems to reinforce your understanding.
Read Head First Java
Show steps
This book provides a comprehensive overview of Java and object-oriented programming concepts, which will complement the topics covered in this course.
View
Head First Java: A Brain-Friendly Guide
on Amazon
Show steps
- Obtain a copy of the book.
- Read one chapter per week.
- Take notes and highlight important concepts.
Join a study group
Show steps
Collaborating with peers can provide a supportive environment for learning and help you stay motivated.
Show steps
- Reach out to classmates and form a study group.
- Set regular meeting times and discuss course materials.
- Share notes and quiz each other.
Review tutorials on inheritance
Show steps
Watching tutorials can provide an alternative perspective on the concepts covered in this course and help you reinforce your understanding.
Browse courses on
Inheritance
Show steps
- Search for tutorials on inheritance.
- Select a tutorial that aligns with your learning style.
- Watch the tutorial and take notes.
Work through practice problems
Show steps
Practicing with sample problems will help you apply the concepts you learn in this course and identify areas where you need more support.
Browse courses on
Classes
Show steps
- Identify a problem set related to the topic you are studying.
- Set a timer for 30 minutes.
- Solve as many problems as you can within the time limit.
- Review your answers and identify any errors.
Implement a class in your favorite programming language
Show steps
Building a class from scratch will help you solidify your understanding of their structure and functionality.
Browse courses on
Classes
Show steps
- Choose a class to implement.
- Design the class interface, including properties, methods, and constructors.
- Implement the class and test it thoroughly.
Build a simple application using object-oriented principles
Show steps
Applying your knowledge to build a real-world project will help you synthesize and retain the concepts covered in this course.
Browse courses on
Classes
Show steps
- Define the requirements and design for your application.
- Implement the application using object-oriented principles.
- Test and debug your application.
Volunteer to mentor students struggling with the course
Show steps
Mentoring others can not only strengthen your understanding of the course material but also positively impact your peers' learning experience.
Show steps
- Reach out to your instructor or classmates to express your interest in mentoring.
- Identify students who could benefit from your support.
- Provide guidance and support on course-related topics.
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