C# Tutorial

Learn C# programming language with this comprehensive C# tutorial series. From beginner to advanced topics, It covers everything you need to know to become proficient in C# programming.

C# Unsafe Code: Why do we need unsafe code in C#?

Unsafe code in C#

In general, the code written in C# is safe code that doesn`t directly access memory using pointers. It also doesn’t allocate raw memory. Instead, managed objects are created.
On the other hand, unsafe code in C# usually refers to a section of code that is not processed by the CLR (Common Language Runtime) and directly access memory using pointers.

Since pointers are complex and might result in memory-related errors like stack overflow, overwritten system memory, etc., extra caution must be taken while handling unsafe code.
By default, pointers are not supported in C#. However, the use of pointer variables is permitted by the unsafe keyword.

charp unsafe code

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C# Events: Top 5 Differences between delegates and events in C#

C# Events: The Events enable a class or object to notify other classes or objects when some interesting thing happens to the object. A class that sends or raises the event is called the publisher, and the classes that receive or handle the event are referred to as subscribers.

There can be multiple subscribers to a single event. Typically, when an action takes place, a publisher raises an event. The subscribers who want to be notified when an action takes place should register or subscribe to handle specific events.

The following diagram shows the event in C#.

csharp events
C# event model

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C# Hashtable vs Dictionary: When should you use a Hashtable or a Dictionary?

Last updated on November 10th, 2023 at 05:45 pm

“In C#, a hashtable is a non-generic collection that can store key/value pairs of any data type. On the other hand, A dictionary is a generic collection that can store key/value pairs of specific data types.”

In this article, we will learn the differences between the Hashtable and Dictionary with examples.

C# Hashtable vs Dictionary
C# Hashtable vs Dictionary

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C# Arrays: Everything You Need to Know About Array in C#

Last updated on October 28th, 2022 at 04:09 pm

C# Arrays: An Array is used to store multiple values in a single variable, rather than declaring a separate variable for each element. It is a fixed-sized sequential collection of elements of the same type.
The data types of the elements in an array can be int, char, float, string, and so on, and they are stored in a contiguous location.

C# Arrays
C# Arrays

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Comments in C#: Single Line, Multiline and XML Comments

Comments-in-C-Sharp
Comments in C#

Introduction: Comments in C#

Comments are used in a program to make a section of code easier to understand. They’re used to make the code more readable and to provide a formal description of the code and how it works. The compiler completely ignores comments, so you may put them wherever in a program and not worry about them breaking it.

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Generics in C#: A Comprehensive Guide with Code Examples and Explanations

Last updated on February 13th, 2023 at 02:09 am

Generics in C# allow you to write type-safe, reusable, and efficient code. In this comprehensive guide, you will learn everything you need to know about generics including how to create generic classes, methods, collections, and generic constraints. This article contains valuable information about C# generics that will help both beginners and experienced C# developers enhance their coding abilities.

C# Generics allow you to reuse the same code (class or method) with different data types. It refers to a generalized version of something rather than a specialized version.

Generics in C#
Generics in C#

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Top 5 Difference between Call by Value and Call by Reference

Last updated on September 30th, 2023 at 02:02 am

In this post, we’ll look at a simple but difficult interview question in C#: Call By Value vs Call By Reference.

This is a question that both fresher and experienced developers are asked in interviews. It’s one of the most frequently asked questions by technical interviewers.

Call by Value and Call by Reference
Difference between Call by Value and Call by Reference

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ASP.NET Core Middleware With Examples

Last updated on December 28th, 2022 at 07:26 pm

In ASP.NET Core, middleware is a component that can be plugged into the request processing pipeline to perform some action for each request. It sits between the server and the application and is responsible for handling requests and responses.

asp-net-core-middleware
asp-net-core-middleware

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C# Collections – Understanding collections in C# with [Examples]

Last updated on August 10th, 2023 at 01:15 am

Collections in C#
C# Collections types

Collections in C#

A collection in C# is a class that represents a group of objects. Collections can be used to perform various operations on objects, such as storing, updating, deleting, retrieving, searching, and sorting.

Collections are defined in the System.Collections namespace. They are a predefined set of classes for storing multiple items in a single unit.

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WCF vs Web API: Top 10 Differences Between WCF and Web API

Last updated on July 23rd, 2023 at 11:45 pm

WCF (Windows Communication Foundation) is a framework for building service-oriented applications. It allows communication between applications on different devices, across computers and networks. WCF is part of the .NET framework, and it provides a runtime environment for applications that use distributed communication.

Web API is a framework for building HTTP services. It is a part of the ASP.NET platform and it allows you to create RESTful (representational state transfer) services, which can be consumed by a wide range of clients including web browsers and mobile devices.

This article will provide a practical comparison of WCF and Web API to help you decide which is the better option for your needs. We will discuss the differences between these two frameworks in detail.

WCF VS WEB API
WCF VS WEB API

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C# 10 New Features: A Comprehensive Guide with Code Examples

Last updated on March 5th, 2023 at 05:38 pm

As a programming language, C# has gone through several iterations, and with each new version, we see new features and enhancements that make programming with it even better.
C# 10, the latest language version, is no exception.

In this article, we will explore the new features of C# 10 and provide examples of how to use them in your code.

C# 10 New Features
C# 10 New Features

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C# Struct vs Class |Top 15+ Differences Between Struct and Class

Last updated on August 17th, 2023 at 01:08 am

C# Struct vs. Class: Structs are value types allocated on the stack and used for small, lightweight data structures. At the same time, classes are reference types allocated on the heap and used for creating more complex objects with properties, fields, methods, and support inheritance.

C# struct vs class
C# struct vs class

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C# List with examples

Last updated on July 9th, 2023 at 12:33 pm

In this article, we will learn about the C# list with the help of multiple examples.

List<T> is a dynamic collection that contains multiple objects of the same data type that can be accessed using an index.

It is similar to an array but can grow or shrink in size. Lists are commonly used to store and organize data in a sequential manner. It can dynamically perform operations like adding, searching, shorting, and removing elements from a collection.

The following diagram illustrates the methods and properties of the List<T> class.

C# List
List in C#

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