The Wayback Machine - https://web.archive.org/web/20240828091900/https://www.geeksforgeeks.org/csharp-programming-language/
Open In App

C# Tutorial

Last Updated : 08 Jul, 2024
Comments
Improve
Suggest changes
Like Article
Like
Save
Share
Report
News Follow

In this C# (C Sharp) tutorial, whether you’re beginner or have experience with other programming languages, our free C# tutorials covers the basic and advanced concepts of C# including fundamentals of C#, including syntax, data types, control structures, classes, and objects.

You will also dive into more advanced topics like exception handling, and multithreading. So, whether you are looking to start a career in software development or simply want to expand your programming skills, our C# tutorial is the perfect place to start.

CSharp-Tutorials

What is C# (C Sharp)

C# is the most common programming language used to develop multiple applications in the.NET framework, and it was introduced by Microsoft in 2000. It was designed to be a simple, object-oriented programming language that can be used to create a wide range of applications and software.

It features a clear syntax, an object-oriented nature, and platform independence, which makes it simpler for developers to organise their code and makes it more legible and manageable.

It is platform-independent in the sense that it may be used to create programmes that operate on different platforms such as Windows, macOS, Linux, and mobile devices. This makes C# a versatile language.

Prerequisite to Learn C#

While there are no strict prerequisites to learning C#, it is a high-level language. So, if you have experience in any programming language like C or C++, then it will significantly enhance your learning experience.

C# Features

Simple

C# is a user-friendly language that offers a structured approach to problem-solving. it provides a wide range of library functions and data types to work.

Modern Programming Language

C# programming is a popular and powerful language that is for creating scalable, interoperable, and robust applications.

Object Oriented

C# is an object-oriented programming language, which makes development and maintenance easier. In contrast, with procedure-oriented programming languages, managing code becomes difficult as project size grows.

Type Safe

The code is type safe can only access memory locations that it has permission to execute. This feature significantly enhances program security.

Interoperability

The interoperability process allows C# programs to perform all the tasks that a native C++ application.

Scalable and Updateable

C# is a programming language that is scalable and can be updated automatically. To update our application, we remove the old files and replace them with new ones.

Component Oriented

It is widely used as a software development methodology to create applications that are more strong and can easily scale.

Structured Programming Language

C# is a structured programming language that allows us to divide programs into parts using functions, making it easy to understand and modify.

Fast Speed

The compilation and execution time of C# language is fast.

Recent Articles on C# !

Overview, Fundamentals, Important Keywords, Control Statements, OOP Concepts, Methods, Delegates, Constructors, Arrays, ArrayList, String, Tuple, ValueTuple, Indexers, Inheritance, Interfaces, Multithreading, Exception Handling, Collections and Generics, Collections Namespace, Generic Namespace, System Namespace, Specialized Namespace, What’s New in C# 8.0, Windows Forms

C# Tutorial- C# Index

Overview

Fundamentals

Important Keywords

Control Statements

OOP Concepts

Methods

Delegates

Constructors

Arrays

ArrayList

String

Tuple

ValueTuple

Indexers & Properties

Inheritance

Interfaces

Multithreading

Exception Handling

Collections & Generics

Collections Namespace

Generic Namespace

System Namespace

Specialized Namespace

What’s New in C# 8.0

Windows Forms

Why use C#?

C# is a popular and simple-to-learn programming language with a large community and plain syntax. C# is an object-oriented programming language that makes code more structured, reusable, and interoperable with other languages. C# is a versatile programming language that can be used to create a broad variety of applications, including games, apps, websites, and advanced technologies such as AI and machine learning.

C# is used for:

  • Mobile applications
  • Desktop applications
  • Web applications
  • Web services
  • Web sites
  • Games
  • VR
  • Database applications

Advantages of C#

  • Easy Syntax: C# is a simple syntax that is easy to learn for a beginner.
  • Object-oriented Programming language: It is an object-oriented programming language used to make classes and objects.
  • Versatile language: It is used to develop software, web applications, mobile apps, and games.
  • Platform Independent: C# can be used to make apps that work on Windows, macOS, and mobile devices.

Audience

In the above section, we have already said that this free C# programming tutorial is designed to help both beginners and experienced.

FAQs on C#

Q.1 What is C# programming language used for?

Answer:

C# is a versatile programming language primarily used for developing Windows applications, web services, and games within the .NET framework.

Q.2 What is the advantage of ‘using’ statement in C#?

Answer:

The ‘using’ statement provides resources for processing before automatically disposing of it when execution is completed.

Q.3 What is serialization?

Answer:

To transport an object through a network, we need to convert it into a stream of bytes. It is called Serialization.

Q.4 What are the four steps involved in the C# code compilation?

Answer:
Four steps of code compilation in C# include:

  • Source code compilation in managed code.
  • Newly created code is merged with assembly code.
  • The Common Language Runtime (CLR) is loaded.
  • Assembly execution is done through CLR.

Q.5 How can I declare and initialize variables in C#?

Answer:

Variables are named containers that store values of different types. To declare a variable in C#, you need to specify its type and name.



Similar Reads

C# Tutorial
In this C# (C Sharp) tutorial, whether you’re beginner or have experience with other programming languages, our free C# tutorials covers the basic and advanced concepts of C# including fundamentals of C#, including syntax, data types, control structures, classes, and objects. You will also dive into more advanced topics like exception handling, and
8 min read
ASP.NET Interview Questions and Answer
ASP.NET is a powerful framework for building dynamic web applications, known for its scalability, performance, and integration with the .NET ecosystem, developed by Microsoft that allows developers to build dynamic web applications, websites, and services. It is part of the larger .NET framework and provides a comprehensive programming model for cr
15+ min read
C# Interview Questions and Answers
C# is the most popular general-purpose programming language and was developed by Microsoft in 2000, renowned for its robustness, flexibility, and extensive application range. It is simple and has an object-oriented programming concept that can be used for creating different types of applications. Here, we will provide 50+ C# Interview Questions and
15+ min read
Differences Between .NET Core and .NET Framework
.NET Core is a free open source, a general-purpose development platform for developing modern cloud-based software applications on Windows, Linux, and macOS operating systems. It operates across several platforms and has been revamped to make .NET fast, scalable, and modern. .NET Core is one of Microsoft's big contributions and released under the M
4 min read
Basic CRUD (Create, Read, Update, Delete) in ASP.NET MVC Using C# and Entity Framework
Prerequisites: Download and Install Microsoft SQL Server Management StudioDownload and Setting Up Visual Studio Community Version MVC stands for Model View Controller. It is a design pattern that is employed to separate the business logic, presentation logic, and data. Basically, it provides a pattern to style web application. As per MVC, you can d
6 min read
Program to calculate Electricity Bill
Given an integer U denoting the amount of KWh units of electricity consumed, the task is to calculate the electricity bill with the help of the below charges: 1 to 100 units - [Tex]Rs. 10/unit[/Tex]100 to 200 units - [Tex]Rs. 15/unit[/Tex]200 to 300 units - [Tex]Rs. 20/unit[/Tex]above 300 units - [Tex]Rs. 25/unit[/Tex] Examples: Input: U = 250 Outp
9 min read
Lambda Expressions in C#
Lambda expressions in C# are used like anonymous functions, with the difference that in Lambda expressions you don't need to specify the type of the value that you input thus making it more flexible to use. The '=>' is the lambda operator which is used in all lambda expressions. The Lambda expression is divided into two parts, the left side is t
3 min read
Garbage Collection in C# | .NET Framework
Garbage collection is a memory management technique used in the .NET Framework and many other programming languages. In C#, the garbage collector is responsible for managing memory and automatically freeing up memory that is no longer being used by the application. The garbage collector works by periodically scanning the application's memory to det
8 min read
Extension Method in C#
In C#, the extension method concept allows you to add new methods in the existing class or in the structure without modifying the source code of the original type and you do not require any kind of special permission from the original type and there is no need to re-compile the original type. It is introduced in C# 3.0. Let us discuss this concept
5 min read
HashSet in C# with Examples
In C#, HashSet is an unordered collection of unique elements. This collection is introduced in .NET 3.5. It supports the implementation of sets and uses the hash table for storage. This collection is of the generic type collection and it is defined under System.Collections.Generic namespace. It is generally used when we want to prevent duplicate el
6 min read
C# Dictionary with examples
In C#, Dictionary is a generic collection which is generally used to store key/value pairs. The working of Dictionary is quite similar to the non-generic hashtable. The advantage of Dictionary is, it is generic type. Dictionary is defined under System.Collections.Generic namespace. It is dynamic in nature means the size of the dictionary is grows a
5 min read
C# | Multiple inheritance using interfaces
Introduction:Multiple inheritance refers to the ability of a class to inherit from multiple base classes. C# does not support multiple inheritance of classes, but it does supportmultiple inheritance using interfaces. An interface is a collection of abstract methods that a class can implement to provide specific behavior. A class canimplement multip
7 min read
Difference between Ref and Out keywords in C#
The out is a keyword in C# which is used for the passing the arguments to methods as a reference type. It is generally used when a method returns multiple values. The out parameter does not pass the property. Example : // C# program to illustrate the // concept of out parameter using System; class GFG { // Main method static public void Main() { //
3 min read
Difference between Abstract Class and Interface in C#
An abstract class is a way to achieve abstraction in C#. To declare an abstract class, we use the abstract keyword. An Abstract class is never intended to be instantiated directly. This class must contain at least one abstract method, which is marked by the keyword or modifier abstract in the class definition. The Abstract classes are typically use
4 min read
C# | Arrays of Strings
An array is a collection of the same type variable. Whereas a string is a sequence of Unicode characters or array of characters. Therefore arrays of strings is an array of arrays of characters. Here, string array and arrays of strings both are same term. For Example, if you want to store the name of students of a class then you can use the arrays o
4 min read
Collections in C#
.math-table { border-collapse: collapse; width: 100%; } .math-table td { border: 1px solid #5fb962; text-align: left !important; padding: 8px; } .math-table th { border: 1px solid #5fb962; padding: 8px; } .math-table tr>th{ background-color: #c6ebd9; vertical-align: middle; } .math-table tr:nth-child(odd) { background-color: #ffffff; } Collectio
5 min read
Introduction to .NET Framework
The .NET Framework is a software development framework developed by Microsoft that provides a runtime environment and a set of libraries and tools for building and running applications on Windows operating systems. The framework includes a variety of programming languages, such as C#, F#, and Visual Basic, and supports a range of application types,
7 min read
Common Language Runtime (CLR) in C#
The Common Language Runtime (CLR) is a component of the Microsoft .NET Framework that manages the execution of .NET applications. It is responsible for loading and executing the code written in various .NET programming languages, including C#, VB.NET, F#, and others. When a C# program is compiled, the resulting executable code is in an intermediate
6 min read
C# | List Class
.list-table { border-collapse: collapse; width: 100%; } .list-table td { border: 1px solid #5fb962; text-align: left !important; padding: 8px; } .list-table th { border: 1px solid #5fb962; padding: 8px; } .list-table tr>th{ background-color: #c6ebd9; vertical-align: middle; } .list-table tr:nth-child(odd) { background-color: #ffffff; } List<T
7 min read
C# | Encapsulation
Encapsulation is defined as the wrapping up of data and information under a single unit. It is the mechanism that binds together the data and the functions that manipulate them. In a different way, encapsulation is a protective shield that prevents the data from being accessed by the code outside this shield. Technically in encapsulation, the varia
5 min read
C# | Method Overriding
Method Overriding in C# is similar to the virtual function in C++. Method Overriding is a technique that allows the invoking of functions from another class (base class) in the derived class. Creating a method in the derived class with the same signature as a method in the base class is called as method overriding. In simple words, Overriding is a
8 min read
C# | Delegates
A delegate is an object which refers to a method or you can say it is a reference type variable that can hold a reference to the methods. Delegates in C# are similar to the function pointer in C/C++. It provides a way which tells which method is to be called when an event is triggered. For example, if you click on a Button on a form (Windows Form a
6 min read
C# | Inheritance
Introduction: Inheritance is a fundamental concept in object-oriented programming that allows us to define a new class based on an existing class. The new class inherits the properties and methods of the existing class and can also add new properties and methods of its own. Inheritance promotes code reuse, simplifies code maintenance, and improves
7 min read
C# | Generics - Introduction
Generic is a class which allows the user to define classes and methods with the placeholder. Generics were added to version 2.0 of the C# language. The basic idea behind using Generic is to allow type (Integer, String, … etc and user-defined types) to be a parameter to methods, classes, and interfaces. A primary limitation of collections is the abs
6 min read
C# | Substring() Method
In C#, Substring() is a string method. It is used to retrieve a substring from the current instance of the string. This method can be overloaded by passing the different number of parameters to it as follows: String.Substring(Int32) Method String.Substring(Int32, Int32) Method String.Substring Method (startIndex) This method is used to retrieves a
3 min read
C# | Arrays
An array is a group of like-typed variables that are referred to by a common name. And each data item is called an element of the array. The data types of the elements may be any valid data type like char, int, float, etc. and the elements are stored in a contiguous location. Length of the array specifies the number of elements present in the array
13 min read
C# | Constructors
A constructor is a special method of the class which gets automatically invoked whenever an instance of the class is created. Like methods, a constructor also contains the collection of instructions that are executed at the time of Object creation. It is used to assign initial values to the data members of the same class. Example : class Geek { ...
6 min read
C# | Operators
Operators are the foundation of any programming language. Thus the functionality of C# language is incomplete without the use of operators. Operators allow us to perform different kinds of operations on operands. In C#, operators Can be categorized based upon their different functionality : Arithmetic OperatorsRelational OperatorsLogical OperatorsB
15 min read
C# | Boxing And Unboxing
Prerequisite : Data Types in C# Boxing and unboxing are important concepts in C#. The C# Type System contains three data types: Value Types (int, char, etc), Reference Types (object) and Pointer Types. Basically, Boxing converts a Value Type variable into a Reference Type variable, and Unboxing achieves the vice-versa. Boxing and Unboxing enable a
3 min read
C# | Data Types
Data types specify the type of data that a valid C# variable can hold. C# is a strongly typed programming language because in C#, each type of data (such as integer, character, float, and so forth) is predefined as part of the programming language and all constants or variables defined for a given program must be described with one of the data type
7 min read
Article Tags :