C# Package Mastery: 100 Essentials in 1 Hour - 2024 Edition

By Tenko

Dive into the world of C# programming with our comprehensive guide, "C# Package Mastery: 100 Essentials in 1 Hour - 2024 Edition". Designed for developers of all levels, this ebook is your quickest route to mastering C# packages. Whether you're a beginner looking to get a solid foundation or an experienced programmer aiming to brush up on the latest in C# packages, this guide has everything you need. With concise, straightforward explanations and practical examples, you'll explore a hundred essential packages that will enhance your programming toolkit, all within the span of an hour. From data manipulation and web development to advanced algorithms, each package is presented in a digestible format, allowing you to learn efficiently and effectively. Start your journey towards C# mastery today and unlock the full potential of your software projects with this indispensable resource.

• Language: English
• Publisher: Blue Summit Bridge Press
• Release date: Apr 4, 2024
• ISBN: 9798224411160

Book preview

Index

Chapter 1  Introduction

1. Purpose

Chapter 2  standard library

1. System.Linq

2. System.IO

3. System.Text.Json

4. System.Text.Encoding

5. System.Drawing

6. System.Net

7. Entity Framework Core (EF Core)

8. NUnit

9. System.IO.MemoryMappedFiles

10. System.Diagnostics.Process

11. System.Buffer

12. System.GC

13. System.TimeSpan

14. System.Guid

15. System.Configuration

16. System.Collections.Specialized

17. System.Numerics

18. System.Security.Principal

19. System.Threading

20. System.Threading.Timer

21. System.Random

22. System.Array

23. System.Collections.Generic

24. System.Text.RegularExpressions

25. System.Uri

26. System.Xml.Serialization

27. System.Threading.Tasks

28. System.Net.Http

29. System.Math

30. System.Diagnostics

31. System.Console

32. System.Environment

33. System.Xml.Linq

34. System.Globalization

35. System.DateTime

36. System.Convert

37. System.Security.Cryptography

38. System.Xml

39. System.Collections

40. System.Reflection

Chapter 3  external library

1. Dapper

2. Serilog

3. MediatR

4. SignalR

5. StackExchange.Redis

6. Octokit.NET

7. AutoFac

8. XUnit

9. MathNet.Numerics

10. RabbitMQ.Client

11. Avalonia

12. ScottPlot

13. BenchmarkDotNet

14. Polly

15. Akka.NET

16. Topshelf

17. NodaTime

18. DynamicExpresso

19. GraphQL.Client

20. AngleSharp

21. FluentFTP

22. Spectre.Console

23. Newtonsoft.Json

24. AutoMapper

25. FastReport

26. Mono.Cecil

27. TinyCsvParser

28. Octokit

29. EPPlus

30. Selenium WebDriver

31. ZeroFormatter

32. CS-Script

33. Roslyn

34. System.Memory

35. Json.NET

36. LiteGuard

37. Nancy

38. OxyPlot

39. DotNetZip

40. ImageSharp.Web

41. SixLabors.Fonts

42. CommandLineParser

43. HidLibrary

44. NLog

45. Hangfire

46. CsvTextFieldParser

47. SharpZipLib

48. LiteX.Cache

49. HtmlAgilityPack

50. FluentAssertions

51. CsvParser

52. Accord.NET

53. NReco.PdfGenerator

54. MimeKitLite

55. SSH.NET

56. Refit

57. Refit.HttpClientFactory

58. Entity Framework Core

59. Moq

60. Humanizer

61. FluentValidation

62. CsvHelper

63. LiteDB

64. ImageSharp

65. Quartz.NET

66. RestSharp

67. MailKit

68. MoreLINQ

69. ClosedXML

Chapter 1  Introduction

1. Purpose

In a world where software development continues to evolve at a rapid pace, mastering a programming language is more than just understanding its syntax; it's about knowing how to effectively leverage its libraries and packages to build efficient, robust applications. C#, with its powerful features and extensive .NET ecosystem, stands as a pivotal language for developers aiming to excel in creating applications for Windows, web, mobile, and gaming.

This book is designed for those who wish to deepen their understanding of C# and its practical applications, offering a hands-on approach to learning that is both engaging and informative. With a focus on real-world utility, it introduces a hundred essential packages, guiding readers through their integration and usage in various projects. Each chapter is crafted to enhance your programming skills, enabling you to master the art and science of C# development within an hour.

Whether you are a novice eager to dive into the world of C# programming or an experienced developer looking to broaden your toolkit, this book promises a journey of discovery and learning. Through practical examples and clear explanations, it aims to equip you with the knowledge and skills to navigate the C# landscape with confidence and creativity. Welcome to an enriching experience of learning C# like never before.

Chapter 2  standard library

1. System.Linq

The System.Linq namespace provides classes and interfaces that support queries that use Language-Integrated Query (LINQ).

––––––––

Ex:System.Linq

using System;

using System.Linq;

class Program

{

static void Main()

{

int[] numbers = { 2, 3, 4, 5 };

var squaredNumbers = numbers.Select(x => x * x);

Console.WriteLine(Squared numbers:);

foreach (var n in squaredNumbers)

{

Console.WriteLine(n);

}

}

}

––––––––

Squared numbers:

4

9

16

25

––––––––

This example demonstrates the use of the Select method from the System.Linq namespace, which is a part of LINQ (Language Integrated Query). Here’s a breakdown of what the code does:Namespace Import: The using System.Linq; statement imports the System.Linq namespace, enabling access to LINQ query capabilities.Array Definition: An array of integers numbers is defined with the elements { 2, 3, 4, 5 }.LINQ Query: The numbers.Select(x => x * x); line is where the LINQ magic happens. The Select method applies a function to each element of numbers. In this case, it squares each number (x => x * x is a lambda expression that takes x and returns x*x).Output: The foreach loop iterates over squaredNumbers, the result of the Select method, printing each squared number to the console.This example showcases the power of LINQ for transforming collections with concise, readable code.

2. System.IO

The System.IO namespace enables working with files and directories; reading, writing, and updating files.

––––––––

Ex:System.IO

using System;

using System.IO;

class Program

{

static void Main()

{

string path = example.txt;

// Write text to a file

File.WriteAllText(path, Hello, file!);

// Read text from the file

string text = File.ReadAllText(path);

Console.WriteLine(text);

}

}

––––––––

Hello, file!

This example demonstrates basic file operations using the System.IO namespace, illustrating how to write to and read from a file. Here’s a detailed explanation:Namespace Import: The using System.IO; statement is necessary to use classes for file operations.File Writing: File.WriteAllText(path, Hello, file!); writes the string Hello, file! to a file named example.txt. If example.txt doesn't exist, it’s created; if it does, it’s overwritten.File Reading: string text = File.ReadAllText(path); reads all the text from example.txt into the variable text.Output: The content of the file is printed to the console using Console.WriteLine(text);, which in this case, outputs Hello, file!.This snippet is a straightforward example of how to perform file I/O (Input/Output) operations in C#, demonstrating the simplicity and power of the System.IO namespace for handling files.

3. System.Text.Json

This library is used for parsing and generating JSON data, offering high-performance, low-allocating, and standards-compliant tools to work with JSON.

––––––––

Ex:System.Text.Json

using System.Text.Json;

var jsonString = {\"name\":\"John\",\"age\":30};

var person = JsonSerializer.Deserialize>(jsonString);

Console.WriteLine($Name: {person[name]}, Age: {person[age]});

––––––––

Name: John, Age: 30

In this example, we are using the System.Text.Json namespace to deserialize a JSON string into a Dictionary. This allows us to dynamically access the properties of the JSON object without creating a predefined class. The JsonSerializer.Deserialize method takes the JSON string and returns a dictionary with string keys and object values. We then use these keys (name and age) to access the corresponding values from the dictionary and print them out. This approach is useful for dealing with JSON data structures where the schema is not known in advance or for quick parsing of JSON without creating specific classes.

4. System.Text.Encoding

This library provides functionality to convert between different character encodings, such as ASCII, UTF-8, and Unicode, which is essential for text data processing and interoperability.

––––––––

Ex:System.Text.Encoding

using System.Text;

var originalString = Hello, World!;

var utf8Bytes = Encoding.UTF8.GetBytes(originalString);

var decodedString = Encoding.UTF8.GetString(utf8Bytes);

Console.WriteLine(decodedString);

––––––––

Hello, World!

Here, we demonstrate how to use the System.Text.Encoding class to convert a string into an array of UTF-8 encoded bytes and then back into a string. Initially, we have a string Hello, World! that we want to encode in UTF-8. The Encoding.UTF8.GetBytes method is used to convert the string into UTF-8 encoded bytes. This is particularly useful when you need to ensure your string data is in a specific encoding format for file writing, network transmission, or compatibility with external systems. After converting to UTF-8 bytes, we use Encoding.UTF8.GetString to convert the byte array back into a string. This process is crucial for decoding received data that is in UTF-8 format or after reading byte data from files that are encoded in UTF-8, ensuring the correct representation of the original string.

5. System.Drawing

The System.Drawing namespace provides access to GDI+ basic graphics functionality. More advanced than directly working with pixels, it enables the drawing of shapes, text, and images.

––––––––

Ex:System.Drawing

using System;

using System.Drawing;

class Program

{

static void Main()

{

using (Bitmap bmp = new Bitmap(100, 100))

{

using (Graphics g = Graphics.FromImage(bmp))

{

// Draw a red rectangle

g.FillRectangle(Brushes.Red, 0, 0, 50, 50);

// Save the bitmap to a file

bmp.Save(example.bmp);

}

}

Console.WriteLine(Bitmap saved as example.bmp);

}

}

––––––––

Bitmap saved as example.bmp

This C# program uses the System.Drawing namespace to create a simple bitmap image of size 100x100 pixels. Here's a step-by-step explanation:Using System.Drawing: This namespace is essential for working with graphics in C#. It is used to create and manipulate images, graphics, fonts, and colors.Creating a Bitmap Object: new Bitmap(100, 100) initializes a new bitmap with the specified width and height in pixels. Here, it's 100x100 pixels.Graphics Object: Graphics.FromImage(bmp) creates a new Graphics object from the bitmap.