Ultimate C# Masterclass for 2023

سرفصل های دوره

In-depth .NET programming course from basics to advanced. Focus on clean code, performance and practice.

1. Introduction

1. Welcome! Basic information & how to get help

2. 46 seconds about your instructor

3. 72 seconds about what this course is

4. 105 seconds about what this course isnt

5. 97 seconds about practicing what you learn

6.1 The complete list of topics.html

6. 112 seconds about time optimization

7.1 Visual Studio on other systems than Windows.pdf

7. Installing Visual Studio Community

8.1 Link to the repository.html

8. Accessing the code

9.1 Code snippets list.html

9.2 List of topics you will learn in this course.html

9.3 visual studio keyboard shortcuts 1920 1080.zip

9. Resources you can download.html

2. C# Fundamentals

1.1 TODO List - requirements.html

1. Section introduction

2. Our first C# program

3. From a text file to an executable program

4. Programmers most important skill

5.1 TODO List - requirements.html

5. The goal for this section

6. Variables

7.1 Microsoft-recommended C# coding convention.html

7.2 Reserved keywords.html

7. Naming variables & introduction to clean code

8. Variables.html

9.1 Operators precedence.html

9. Operators

10. Implicitly typed variables

11.1 Code snippets.html

11. User input

12. Debugging with breakpoints

13. Coding exercises introduction

14. Variables and operators.html

15. Comments

16. Boolean type. Logical negation, equality, comparison, and modulo operators

17. Bools & operators.html

18. AND and OR logical operators

19. Boolean type and operators.html

20. ifelse conditional statement

21. ifelse conditional statement.html

22. The scope of local variables

23. Booleans, operators and ifelse conditional statement..html

24. Methods - part 1 - void methods

25. Methods - part 2 - non-void methods

26. Methods - AbsoluteOfSum method.html

27. Methods - part 3 - parameters types and the return type. Static typing in C#

28. Methods and typing.html

29. Parsing a string to an int (int.Parse method)

30. The first exception

31. Adding a new project to a solution

32. Assignments - Introduction

33.1 Requirements.html

33. Assignment - Simple Calculator - Description and requirements

34. Assignment - Simple Calculator - Its time for you to implement it.html

35. Assignment - Simple Calculator - Solution

36. String interpolation

37. String interpolation - FormatDate.html

38. Switch statement

39. Switch statement - DescribeDay.html

40. Char

41. A need for loops

42. While loop - part 1

43.1 ++i vs i++.html

43. += and ++ operators. Infinite loops

44. While loop - part 2

45. While loop - CalculateSumOfNumbersBetween.html

46. Do while loop

47. Do-while loop - RepeatCharacter.html

48. For loop

49. For loop - Factorial.html

50. Break

51. Continue

52. Break and continue.html

53. Nested loops

54. Loops performance

55. Arrays

56. Arrays.html

57. Arrays (1) - BuildHelloString.html

58. Arrays (2) - IsWordPresentInCollection.html

59. Multi-dimensional arrays

60. Multi-dimensional arrays - FindMax.html

61. Foreach loop

62. Foreach loop - IsAnyWordLongerThan.html

63. Lists

64. Lists - GetOnlyUpperCaseWords.html

65. out keyword

66. TryParse method

67.1 Requirements.html

67. Assignment - TODO List - Description and requirements

68. Assignment - TODO List - Its time for you to try to solve it.html

69. Assignment - TODO List - Implementation - User options & adding a TODO

70. Assignment - TODO List - Implementation - Listing and Removing TODOs

71. Assignment - TODO List - Refactoring

72. Section final quiz.html

3. Basics of Object-Oriented Programming

1. Section introduction

2. The issues in our code. A need for Object-Oriented Programming

3. Introduction to object-oriented programming

4. Understanding OOP with the DateTime type

5. Basics of OOP.html

6. Abstraction

7. Our first class

8. Data hiding

9.1 Microsoft C# Coding convention.html

9. Custom constructor

10. HotelBooking class.html

11.1 Top-level statements in .NET 6 and later.html

11. C# restrictions on code outside classes. Top-level statements

12. Adding methods to classes

13. Basics of classes.html

14. Encapsulation

15. The Triangle class.html

16. Methods overloading

17. Constructors overloading. Calling one constructor from another

18. Encapsulation & overloading.html

19. this keyword (current instance reference)

20. Optional parameters

21. Dog class.html

22. Expression-bodied methods

23. Validation of constructor parameters

24.1 Benefits of immutable objects.html

24. Readonly and const

25. Optional parameters and more.html

26. Limitations of fields. A need for properties

27. Properties

28. Properties of the Order class.html

29. Object initializers

30. Computed properties

31. Computed properties - DailyAccountState class.html

32. Static methods and classes

33. Static classes - NumberToDayOfWeekTranslator.html

34. Static fields, properties and constructors

35. Properties & static.html

36. string.Split and string.Join methods.html

37. Single Responsibility Principle - Introduction

38. Single Responsibility Principle - Refactoring (part 1)

39. Single Responsibility Principle - Refactoring (part 2)

40. Single Responsibility Principle - Refactoring (part 3)

41. Single Responsibility Principle.html

42. Files, namespaces and the using directive

43. Global using directives

44.1 Requirements.html

44. Assignment - Dice Roll Game - Description and requirements

45. Assignment - Dice Roll Game - Its time for you to try to solve it.html

46. Assignment - Dice Roll Game - Random

47. Assignment - Dice Roll Game - Magic Number Antipattern

48. Assignment - Dice Roll Game - Designing classes

49. Assignment - Dice Roll Game - Enums

50. Assignment - Dice Roll Game - Ternary conditional operator

51. Section final quiz.html

4. Object-Oriented Programming Polymorphism, Inheritance, Interfaces

1. Section introduction

2. A need for polymorphism

3. Inheritance

4. Inheriting members from the base class. Protected access modifier

5. Basics of polymorphism.html

6.1 new modifier documentation.html

6.2 Method hiding and the new modifier.html

6. Overriding members from the base class. Virtual methods and properties

7. Virtual methods - practice

8. Inheritance & Overriding - Animals.html

9. Virtual methods - StringsProcessor classes.html

10. A deeper inheritance hierarchy

11. Multiple inheritance

12. System.Object and the ToString method

13. Virtual methods and properties.html

14. Inheriting constructors and the base keyword

15. Implicit conversion

16. Explicit conversion

17. Conversion.html

18. Upcasting and downcasting

19. is operator

20. Null

21. is operator and null object -NumericTypesDescriber class.html

22. as operator

23. Abstract classes

24. Abstract methods

25. Abstract methods - Shapes.html

26. A need for abstract methods

27. Sealed classes and methods

28. Static classes are always sealed

29. Abstract & sealed.html

30. Extension methods

31. Extension methods - List extensions.html

32. A need for interfaces

33.1 Default implementations in interfaces.html

33.2 Default implementations in interfaces (official documentation).html

33. Interfaces

34. Interfaces - Applying multiple transformations to a number.html

35. Interfaces vs abstract classes

36. Interfaces.html

37.1 JSON tutorial.html

37.2 Using JSON with C#.html

37. JSON

38.1 Requirements.html

38. Assignment - Cookies Cookbook - Description and requirements

39. Assignment - Cookies Cookbook - Its time for you to try to solve it.html

40. Assignment - Cookies Cookbook - High-level design

41. Assignment - Cookies Cookbook - Dependency Inversion and Dependency Injection

42. Assignment - Cookies Cookbook - Designing data types

43. Assignment - Cookies Cookbook - Printing data object. LINQ.

44. Assignment - Cookies Cookbook - Printing the ingredients

45. Assignment - Cookies Cookbook - Composing the recipe by the user

46. Assignment - Cookies Cookbook - Reading and writing from and to a .txt file

47. Assignment - Cookies Cookbook - Reading and writing from and to a .json file

48. Assignment - Cookies Cookbook - Template Method Design Pattern

49. Assignment - Cookies Cookbook - Cleanup and project organizing

50. Section final quiz.html

5. Exceptions and error handling

1. Section introduction

2. Exception object

3. Stack trace

4. Handling exceptions. Try-catch-finally

5. Try-catch-finally. DivideNumbers.html

6. Multiple catch blocks

7. Basics of exceptions.html

8. Throwing exceptions explicitly

9. Built-in exception types

10. Built-in exceptions.html

11. StackOverflowException. Recursive methods

12. Precise exceptions

13. Rethrowing exceptions. throw vs throw ex

14. Rethrowing exceptions.html

15. Rethrowing a System.Exception object

16. Global try-catch block

17. Code inside the catch block

18. Exception filters

19. Exception handling.html

20.1 How to create user-defined exceptions.html

20.2 Serializable exceptions.html

20. Custom exceptions

21. When to define custom exceptions

22. Custom exception - InvalidTransactionException.html

23. Exceptions as a hidden part of a method signature

24. Two extreme schools of using exceptions

25. Smart usage of exceptions - throw

26. Smart usage of exceptions - catch

27. Smart usage of exceptions.html

28.1 jsonFiles.zip

28.2 Requirements.html

28. Assignment - Game Data Parser - Description and requirements

29. Assignment - Game Data Parser - Its time for you to try to solve it.html

30. Assignment - Game Data Parser - Sunny day scenario

31. Assignment - Game Data Parser - Flow controlled by exceptions

32. Assignment - Game Data Parser - Adding details to JsonException

33.1 log4net introduction.html

33.2 Serilog introduction.html

33. Assignment - Game Data Parser - Custom logger

34. Assignment - Game Data Parser - Reducing usage of exception

35. Assignment - Game Data Parser - Refactoring - Extracting methods

36. Assignment - Game Data Parser - Refactoring - SRP, DI and classes decoupling

37. Section final quiz.html

6. Generic types & advanced use of methods

1. Section introduction

2. Introduction to generic types

3. Understanding how List works under the hood

4. Simplified List (adding a new item)

5. Simplified List (deleting an item at given index)

6. A need for generic types. Implementing a generic type

7. Generic types - Pair class.html

8. A need for tuples

9. Tuples

10. Generic types introduction.html

11. C# without generics. ArrayList

12. Generic methods

13. Generic methods with multiple type parameters

14. Generic methods - SwapTupleItems method.html

15. Convert.ChangeType method. typeof keyword and the Type object

16. Generic types and methods.html

17. A need for type constraints

18. Improving the performance of the List. Measuring the time of the code execution

19. Type constraints - the constraint on the base type

20. IComparable interface. Ordering objects

21. Type constraints - the constraint on the implemented interface

22. Type constraints & IComparable - SortedList of FullNames.html

23. Type constraints - numeric types. Generic math

24.1 Type constraints in C# - the complete list.html

24. Type constraints - summary. Multiple type constraints

25. Type constraints.html

26. Advanced use of methods - introduction

27. Funcs and Actions

28. Basics of Funcs and Actions.html

29. Lambda expressions

30. Basics of lambda expressions.html

31. Delegates

32. Funcs, lambda expressions and delegates.html

33. Dictionary - introduction

34. Dictionary - practice

35. Dictionaries - FindMaxWeights of pets.html

36. A need for the Strategy design pattern

37. Refactoring the code using Funcs and lambda expressions

38. Open-Closed Principle. Strategy design pattern

39. Generic filtering of collections

40. Advanced use of generic types.html

41. Caching

42.1 AssignmentStartupFile.zip

42.2 Requirements.html

42. Assignment - Custom Cache - Description and requirements

43. Assignment - Custom Cache - Its time for you to try to solve it.html

44.1 How to use built-in caching mechanism.html

44. Assignment - Custom Cache - Implementation

45. Assignment - Custom Cache - The Decorator design pattern

46. Assignment - Custom Cache - Composing many Decorators together

47. Section final quiz.html

7. LINQ

1. Section introduction

2.1 Query syntax tutorial.html

2. What is LINQ

3. LINQ and extension methods

4. LINQ, IEnumerableT and method chaining

5.1 Deferred execution explained.html

5.2 Yield statement explained (can also be found in the section about collections).html

5. Deferred execution

6. Basics of LINQ.html

7. Any

8. All

9. Any & All.html

10. Count

11. Contains

12. Count & Contains.html

13. OrderBy

14. First and Last

15. OrderBy, First & Last.html

16. Where

17. Distinct

18. Where & Distinct.html

19. Select

20. Average. Anonymous types

21. Select & Average.html

22.1 CookieCookbook.zip

22.2 Requirements.html

22. Assignment - Refactoring to LINQ - Description and requirements

23. Assignment - LINQ Refactoring - Its time for you to try to solve it.html

24. Assignment - Refactoring to LINQ - Nested loop and code readability

25.1 Regular expressions tutorial.html

25. Assignment - Refactoring to LINQ - Find and Replace window

26. Assignment - Refactoring to LINQ - Fewer loops & multiline strings formatting

27.1 LINQ source code.html

27. Assignment - Refactoring to LINQ - Checking if collection has duplicates

28. Section final quiz.html

29. If you want to learn more about LINQ .html

8. .NET under the hood

1. Section introduction

2. .NET and C#

3. Common Intermediate Language (CIL)

4. Common Language Runtime (CLR)

5. .NET basics.html

6. Memory of a program. The stack and the heap

7. Value semantics vs reference semantics

8. Value types vs reference types

9. Memory of a program. Value vs reference types.html

10. Value types vs reference types - practical tips

11. ref keyword

12. ref modifier - FastForwardToSummer.html

13. Using ref with reference types

14. Unified type system. A need for boxing and unboxing

15. Boxing and unboxing

16. Boxing and unboxing - performance cost

17. Boxing and unboxing.html

18. Garbage Collector - introduction

19. Garbage Collector - memory fragmentation and defragmentation

20.1 More about roots identified by Mark-and-Sweep algorithm.html

20. Garbage Collector - the Mark-and-Sweep algorithm

21. Basics of Garbage Collector and memory management.html

22. Garbage Collector - generations of objects

23. Memory leaks

24.1 Eric Lipperts article about finalizers.html

24.2 When to use finalizers - StackOverflow discussion.html

24. Finalizers

25. Garbage Collector and memory management - advanced.html

26. Dispose method - introduction

27. Dispose method - writing to a file using StreamWriter

28. Dispose method - reading from a file using StreamReader

29.1 Implementing Dispose & The Dispose pattern.html

29. Dispose method - implementation

30. Dispose method - AllLinesFromTextFileReader.html

31.1 sampleData.csv

31. CSV files

32.1 sampleData.csv

32. Reading CSV files

33.1 NetUnderTheHoodAssignment.zip

33.2 Requirements.html

33.3 sampleData.csv

33. Assignment - CSV Processing Improvements - Description and requirements

34. Assignment - CSV Processing Improvements - Its time for you to try to solve it.html

35. Assignment - CSV Processing Improvements - Code analysis & tips

36. Assignment - CSV Processing Improvements - Reducing the size of Dictionaries

37. Assignment - CSV Processing Improvements - Reducing the number of boxings

38. Assignment - CSV Processing Improvements - Analysis

39. Section final quiz.html

9. Advanced C# types

1. Section introduction

2. Reflection

3. Attributes

4. Attributes - MustBeLargerThanAttribute.html

5. Reflection.html

6. Structs

7. Structs vs Classes - crucial differences

8.1 Structs in older versions of C#.html

8. Structs vs Classes - low-level differences

9. Choosing between structs and classes

10. Structs.html

11. Why should we make structs immutable

12. Immutable struct - Time.html

13. Non-destructive mutation

14. with expression

15. Readonly structs

16. Immutable types.html

17. A close look at the System.Object type. The ReferenceEquals method

18. Equals method

19. Overriding the Equals method in classes

20. Overriding the Equals method in structs

21. Equals - overriding it in the FullName class.html

22. IEquatableT interface

23. == operator

24. Equality checks.html

25.1 Overloadable operators.html

25. Operators overloading

26. Overloading of implicit and explicit conversion operators

27. Operators overloading - Time structs.html

28. Hash functions

29. Default implementation of the GetHashCode method

30. When to override the GetHashCode method

31. GetHashCode.html

32. Overriding the GetHashCode method

33. GetHashCode - Time struct.html

34. ValueTuples

35. Benefits of immutable types

36. Immutable types.html

37. Records

38. Record structs

39. Records - GpsCoordinates.html

40. Nullable value types

41. Nullable reference types

42. Null-forgiving operator

43. Using nullable reference types. Generic type constraints related to nullability

44. Nullable types.html

45. APIs

46.1 Free APIs that do not require authentication.html

46.2 USA population API call.html

46. Querying an API using C#

47. A class for querying APIs

48.1 MockApiDataAccess.zip

48.2 Requirements.html

48. Assignment - Star Wars Planets Stats - Description and requirements

49. Assignment - Star Wars Planets Stats - Its time for you to try to solve it.html

50. Assignment - Star Wars Planets Stats - JsonPropertyNameAttribute and DTOs

51.1 Documentation comments.html

51. Assignment - Star Wars Planets Stats - Exceptions handling

52. Assignment - Star Wars Planets Stats - Type design

53. Assignment - Star Wars Planets Stats - Converting DTO to a custom type

54. Assignment - Star Wars Planets Stats - Finishing the app and the MaxBy method

55. Assignment - Star Wars Planets Stats - Refactoring

56. Assignment - Star Wars Planets Stats - Splitting the class

57. Assignment - Star Wars Planets Stats - Universal table printer

58. Section final quiz.html

10. Collections

1. Section introduction

2. The role of the IEnumerable interface

3. A close look at the IEnumerable interface

4. Implementing IEnumerable

5. Implicit and explicit interface implementation

6. Implementing IEnumerableT

7. IEnumerable & interfaces implementation.html

8. Indexers

9. ValueTuples & Custom indexer - PairOfArrays.html

10. Collection initializers

11. ICollection and IList interfaces

12. Breaking the Interface Segregation Principle

13. Interface Segregation Principle

14. The benefits of readonly collections

15. Readonly collections. ReadOnlyCollection and ReadOnlyDictionary

16. Collections - advanced topics.html

17. Big O Notation

18. Binary search algorithm

19. Binary search algorithm - implementation

20. Binary search algorithm - complexity

21. Complexity of algorithms.html

22. Improving performance when using Lists

23. Linked list

24. Linked list vs List

25. Dictionaries under the hood

26. Performance of Dictionaries

27. Performance of collections.html

28. HashSet

29. HashSet - CreateUnion method.html

30. Queue

31. Stack

32. params keyword

33. params keyword - Does Stack contain any of the given words.html

34. A need for yield statement

35. yield statement - behavior analysis

36. yield statement and iterators

37. yield statement - practice. yield break statement

38. yield statement - GetAllAfterLastNullReversed method.html

39. Implementing IEnumerable interface using iterators

40.1 Requirements.html

40. Assignment - Custom Linked List - Description and requirements

41. Assignment - Custom Linked List - Its time for you to try to solve it.html

42. Assignment - Custom Linked List - Data structures

43. Assignment - Custom Linked List - The AddToFront method

44. Assignment - Custom Linked List - Implementing IEnumerable

45. Assignment - Custom Linked List - Adding new items at the end of the list

46. Assignment - Custom Linked List - The Clear method

47. Assignment - Custom Linked List - Removing items and the Contains method

48. Assignment - Custom Linked List - The CopyTo method

49.1 Built-in Linked List.html

49. Assignment - Custom Linked List - Summary and performance. Private classes

50. Section final quiz.html

11. Projects, assemblies, solutions

1. Section introduction

2. Projects and solutions

3. Project properties

4. Debug build vs Release build

5. Projects and solutions.html

6. Assemblies

7. Referencing types from another assembly

8. Referencing types from another project

9. Internal access modifier. Principles of using access modifiers

10. Protected internal access modifier

11. Private protected access modifier

12.1 Access modifiers in C#.html

12. Access modifiers - summary

13. Access modifiers.html

14. How to structure the code in a solution

15. NuGet

16. .csproj files

17. .sln files

18.1 .NET version upgrade guide.html

18. Updating the .NET version

19. Section final quiz.html

12. Strings

1. Section introduction

2. Char

3.1 Unicode encoding table.html

3. Char representation in memory. Character encoding

4. Managing various encodings

5. Chars and encoding.html

6. Immutability of strings

7. Strings - value or reference types

8. Strings as members in structs

9. Strings.html

10. A need for StringBuilder

11. StringBuilder

12. StringBuilder - The Reverse method.html

13. String interning

14. Flyweight design pattern

15.1 Composite formatting.html

15. Advanced string formatting

16. Culture-specific string formatting

17. Specific culture vs Invariant culture

18. Advanced features of strigs.html

19.1 Requirements.html

19.2 Tickets.zip

19. Assignment - Tickets Data Aggregator - Description and requirements

20. Assignment - Tickets Data Aggregator - Its time for you to try to solve it.html

21. Assignment - Tickets Data Aggregator - Reading text from PDF

22. Assignment - Tickets Data Aggregator - List all PDFs from a folder

23. Assignment - Tickets Data Aggegator - Splitting a string by multiple separatos

24. Assignment - Tickets Data Aggegator - Parsing culture-specific strings

25. Assignment - Tickets Data Aggegator - Saving result in a text file

26. Assignment - Tickets Data Aggegator - Refactoring

27. Assignment - Tickets Data Aggegator - Compliance with the SRP

28. Section final quiz.html

13. Numeric types

1. Section introduction

2. Decimal number system

3. Binary number system

4. Maximal numbers on a given number of digits

5. Binary number system.html

6. Numbers in memory. Integer

7.1 Addition in columns.html

7. Adding binary numbers

8. Numeric overflow & silent failures

9. Numbers in memory.html

10. checked keyword

11. Checked context - when to use it

12. Scope of the checked context. unechecked keyword

13. Checked - Fibonacci sequence.html

14. Integral numeric types overview

15. Floating-point numbers

16. double and float

17. Smart usage of binary floating point numbers

18. Floating point numbers - The IsAverageEqualTo method.html

19. Decimal

20. Section final quiz.html

14. Events

1. Section introduction

2. A need for communication between objects

3. A need for the Observer design pattern

4. Observer design pattern

5. Defining an event and subsribing to it

6. Raising events

7. Events - User and BankAccount.html

8. EventHandler delegate & EventArgs type

9. Observer design pattern & basics of events.html

10. Event vs delegate members

11. Memory leaks caused by events

12. Events - WeatherDataAggregator.html

13. Windows Forms - introduction

14. The first Windows Forms app

15. Understanding Windows Forms files

16. Events in Windows Forms

17. Windows Forms - basic UI elements

18.1 Requirements.html

18. Assignment - Numeric Types Suggester - Description and requirements

19. Assignment - Numeric Types Suggester - Its time for you to try to solve it.html

20. Assignment - Numeric Types Suggester - User Interface & basic events

21. Assignment - Numeric Types Suggester - Handling KeyPress event

22. Assignment - Numeric Types Suggester - Numbers validation and BigInteger type

23. Assignment - Numeric Types Suggester - Choosing numeric type

24. Section final quiz.html

15. Bonus section

1. Bonus lecture.html

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