C# Beyond Basics

1. Additional Structures & File Handling

In this section we will learn data structures like Lists and Dictionaries. We will also learn how to read and write files. In the end we will look at how to deal with unexpected errors which can occur during the program's execution.

What are Lists?

Practicing List Declaration

List Methods

What are Dictionaries?

Practicing Dictionaries

Reading Files using StreamReader

Reading Files using File Methods

Writing Files

Error Handling

Practicing Error Handling

2. Structs & Enumerators

In this section we will learn about some more advanced structures for storing data, namely Structs and Enumerators. We will learn how to use them and we will look at some practice examples as well.

What are Structs?

Defining & Using a Structure

Practicing Structs

Structs with Other Data Structures

Struct Methods

Correctly Accessing Fields in Struct Methods

Practicing Methods

Struct Constructors

Practicing Constructors

Enumerators

Practicing Enumerator

3. Introduction to Object-Oriented Programming (OOP)

In this section, we will learn what Object-Oriented Programming (OOP) is and how we can create programs that use the concept of OOP. We will also practice this concept with many hands-on tasks that are fun to solve.

What is Object-Oriented Programming?

Defining Classes

Practice: Creating Classes

Class Objects

Class Objects vs Struct Objects

Practice: Constructors

4. OOP Essentials

In this section, we delve deeper into the essentials of Object-Oriented Programming (OOP). We explore advanced topics to enhance your understanding and proficiency in OOP. From managing object lifecycles through destructors to refining class structures with access modifiers, and harnessing the power of derived classes and method overloading, this section equips you with the knowledge and practical skills needed to design robust and flexible object-oriented systems.

Derived Classes

Derived Classes Practice

Common Access Modifiers

Access Modifiers Practice

The `static` Keyword

Practicing `static` Keyword

Method Overloading

Method Overloading Practice

5. OOP Principles

This will be a detailed chapter in which we will dive deep into the main principles of Object-Oriented Programming (OOP). We will also look at many practical applications and hands-on examples of these principles to understand them better. In this section we will revise some of the concepts from the previous section in a bit more detail and combine the concepts together to understand it more thoroughly.

What are the Principles of OOP?

Inheritance

Practicing Inheritance

Polymorphism

Practicing Polymorphism

Encapsulation

Encapsulation Practice

Abstraction

Abstraction Practice

What's Next?

Defining & Using a Structure

We define a structure using the following syntax:

index.cs

For-example we can define a structure for storing some student data:

index.cs

Now for storing data we need to create an instance (also called an object) using this structure. A structure is basically a custom datatype, and hence it can be treated as such. So for creating a new object of the structure, we simply use the following syntax:

index.cs

We can create multiple objects of the Student class, all of which can store data:

index.cs

Each object we created has the set of fields defined in the Student structure and we can store and access data from those fields using the variableName.fieldName syntax. For example we can access and output the name field of student2:

index.cs

When an empty object is created, the fields take up zero values depending upon their datatypes:

string - empty string ""
char - empty character ''
int - 0
float - 0.0
bool - false

Therefore the student2.name will give an empty output.

We can store data in it using the assignment operator (=):

index.cs

This way we can store data in all of the three objects:

index.cs

The expression variableName.fieldName as a whole can be treated as a variable and hence it is valid to use it in string formatting like how it is used in the example above.

1. Which keyword is used for defining a structure?

2. What is the output of the following code?

Все було зрозуміло?

Секція 2. Розділ 2

Зміст курсу

C# Beyond Basics

1. Additional Structures & File Handling

What are Lists?Practicing List Declaration List Methods What are Dictionaries?Practicing Dictionaries Reading Files using StreamReader Reading Files using File Methods Writing Files Error Handling Practicing Error Handling

2. Structs & Enumerators

What are Structs?Defining & Using a Structure Practicing Structs Structs with Other Data Structures Struct Methods Correctly Accessing Fields in Struct Methods Practicing Methods Struct Constructors Practicing Constructors Enumerators Practicing Enumerator

3. Introduction to Object-Oriented Programming (OOP)

What is Object-Oriented Programming?Defining Classes Practice: Creating Classes Class Objects Class Objects vs Struct Objects Practice: Objects Class Methods Practice: Methods Class Constructors Practice: Constructors

4. OOP Essentials

Derived Classes Derived Classes Practice Common Access Modifiers Access Modifiers Practice The `static` Keyword Practicing `static` Keyword Method Overloading Method Overloading Practice

5. OOP Principles

What are the Principles of OOP?Inheritance Practicing Inheritance Polymorphism Practicing Polymorphism Encapsulation Encapsulation Practice Abstraction Abstraction Practice What's Next?

C# Beyond Basics

Defining & Using a Structure

We define a structure using the following syntax:

index.cs

For-example we can define a structure for storing some student data:

index.cs

We can create multiple objects of the Student class, all of which can store data:

index.cs

When an empty object is created, the fields take up zero values depending upon their datatypes:

string - empty string ""
char - empty character ''
int - 0
float - 0.0
bool - false

Therefore the student2.name will give an empty output.

We can store data in it using the assignment operator (=):

index.cs

This way we can store data in all of the three objects:

index.cs

The expression variableName.fieldName as a whole can be treated as a variable and hence it is valid to use it in string formatting like how it is used in the example above.

1. Which keyword is used for defining a structure?

2. What is the output of the following code?

Все було зрозуміло?

Секція 2. Розділ 2