C# Version HisotryC# Language FeaturesInstalling Visual StudioC# Basic Project StructureHello Wolrd, first C# program
Variables in C# Explicitly typed variables in C#Implicitly typed variables in C#Constants in C#Data types in C#Integral data types in C#Floating-point data types in C#Comparison between Float, Double and DecimalChar data type in C#String data type in C#Boolean data type in C#DateTime data type in C#Enumeration data type in C#Array data type in C#Object data type in C#Dynamic data type in C#Anonymous data type in C#Nullable data type in C#Type casting in C#Type safety in C#Literals in C#Operators in C#Ternary Operator in C#Null coalescing Operator in C#Tilde(~) Operator in C#Keywords in C#Namespace in C#Nullable Types in C#Nullable Helper Class in C#Characteristics of Nullable typesC# Difference between "int" and "int?"
Block statement in C#Empty statement in C#Jump statements in C#Break statement in C#Continue statement in C#Difference between continue and breakGoto statement in C#Return statement in C#Throw statement in C#Yield keyword in C#Checked statement in C#Unchecked statement in C#Lock statement in C#Using statement in C#Enum/Enumeration in C#If-Else statement in C#Switch statement in C#What is a loop in C#?For loop in C#While loop in C#Do while loop in C#Foreach loop in C#Nested loop in C#Infinite loop in C#
C# Method or FunctionC# Method Parameters and ArgumentsC# Method OverloadingC# Return StatementsC# Static vs. Instance MethodsC# Method ModifiersC# Method Signatures and Naming ConventionsC# Function Documentation and CommentsC# Value Type ParametersC# Ref Type ParametersDifference between Value and Ref TypeC# Out ParametersDifference between Ref and out parametersC# Optional parametersAre Nullable types reference types in C#"
Exception Handling in C#Types of exception in C#Try catch finally in C#finally block in C#try block without catch blockMultiple catch blocks in exceptionCatch multiple exceptions in C#Base class of exception in C#finally block execution in C#finally block execution in case of errorFinally and return statementWays to use try-catch-finallyException throw from finally block"throw" and "throw ex" in C#Differene between finalize() and finallyInner exception in C#Error types in C#Catch multi exception by single catch blockUser defined/custom excetion in C#Compile and run time exception in C#Difference between "error" and "exception"System and application exception in C#Exception handling abuse in c#?
C# String BasicsC# String ManipulationC# String FormattingC# String Comparison and SearchingC# StringBuilder ClassC# Regular ExpressionsC# Unicode and EncodingC# String Parsing and ConversionDifference between "string" and "String"C# String Escape SequenceC# Mutable and Immutable ConceptProve that string is immutableString value stored in memoryDifference between string and stringbuilderOverride the tostring() method
Enum/enumeration in C#Can you inherit enum in C#?Convert enum to stringConvert enum to list in C#Cast int value to enum in C#Get int value from enum in C#Convert string to enum in C#Usage of enum in switch case statementLoop through all enum valuesUse tilde(~) with Enum
Main() method basics in C#More than one "Main()" method in C#Static Main() method in C#Overload Main() method in C#Override Main() method in C#Access modifiers of Main() method in C#Non-static method in C#Main() method arguments and return typeasync Main() method in C#Class without Main() method in C#Main() method rules in C#
Recursion in C#Base condition in recursion in C#Recursive Algorithms in C#Tree traversal using recursion in C#Stack overflow error in recursionBack tracking using recursionIndirect recursion in C#Recursive data structures in C#Tail Recursion in C#Recursive problem solvingRecursion vs Iteration
C# File and File InfoC# StreamReader and StreamWriterC# FileStream and BinaryReader/BinaryWriterC# Directory and DirectoryInfo ClassesC# File PathsC# File and Directory OperationsC# File Exceptions and Error HandlingC# File Serialization and DeserializationC# File System Watcher
What is array?Single dimension arrayMulti dimension arrayJagged arrayParam arrayArray with multi data typesDifferent data types from object arrayArray with non-default valuesArray methods and propertiesArray manipulation techniquesArray sorting algorithmsArray Searching algorithms(linear, binary search)Array finding maximum and minimumArray of Reference Types
C# GenericsC# Generic Constraints
C# ArrayListC# Array vs ArrayListC# ListC# SortedListC# DictionaryC# HashtableC# Dictionary vs HashtableC# HashSetC# Hashtable vs HashSetC# StackC# Queue
C# IEnumerableC# IEnumeratorC# ICollectionC# IListC# IDictionaryC# IDisposableC# IComparableC# IEquatableC# ICloneableC# IQueryableC# INotifyPropertyChangedC# INotifyCollectionChangedC# IFormattableC# IAsyncResultC# IComparerC# IEqualityComparerC# IHttpHandlerC# IHttpModule
C# DelegatesC# Single-Cast DelegateC# Multi-Cast DelegateC# Generic DelegatesC# Func DelegateC# Action DelegateC# Predicate DelegateC# Anonymous MethodsC# EventsDifference Between Event & DelegateDifference Between Interface & DelegateC# Covariance and Contravariance
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C# Version History

C# (pronounced "C sharp") is a modern, general-purpose programming language developed by Microsoft. It was created by Anders Hejlsberg and his team at Microsoft and was first released in 2000 as part of the Microsoft .NET framework.

C# founder Anders Hejlsberg

Here is a detailed overview of the history of C#:

  1. Development of C#:
    In the late 1990s, Microsoft recognized the need for a new programming language that would combine the power and efficiency of C++ with the simplicity and ease of use of Visual Basic.
    Anders Hejlsberg, known for his work on Turbo Pascal and Delphi, led the development of C# and the team aimed to create a language that was type-safe, object-oriented, and versatile.
  2. Release of C# 1.0 (2000):
    C# 1.0 was released in 2000 as part of the initial release of the Microsoft .NET Framework.
    It provided core features of the language, including classes, interfaces, properties, events, exception handling, and garbage collection.
    C# 1.0 targeted the Common Language Runtime (CLR) and allowed developers to build applications for Windows using the .NET platform.
  3. Evolution and Major Releases:
    C# has since undergone several major releases, with each version introducing new features and improvements to the language.
    Some notable versions and their key features include:

    C# 2.0 (2005): Introduced generics, anonymous methods, and nullable value types.

    C# 3.0 (2007): Introduced LINQ (Language Integrated Query), automatic properties, extension methods, and lambda expressions.

    C# 4.0 (2010): Introduced dynamic typing, named and optional parameters, and improved COM interoperability.

    C# 5.0 (2012): Introduced async/await keywords for asynchronous programming.

    C# 6.0 (2015): Introduced string interpolation, null-conditional operator, and static using directives.

    C# 7.0 (2017): Introduced pattern matching, tuples, local functions, and more.

    C# 8.0 (2019): Introduced nullable reference types, async streams, ranges and indices, and switch expressions.

    C# 9.0 (2020): C# 9 was released with .NET 5. It's the default language version for any assembly that targets the .NET 5 release. It introduced record types, improved pattern matching, init-only properties, and more.

    C# 10 (2021): C# 10 adds the following features and enhancements to the C# language:
    • Record structs
    • Improvements of structure types
    • Interpolated string handlers
    • global using directives
    • File-scoped namespace declaration
    • Extended property patterns
    • Improvements on lambda expressions
    • Allow const interpolated strings
    • Record types can seal ToString()
    • Improved definite assignment
    • Allow both assignment and declaration in the same deconstruction
    • Allow AsyncMethodBuilder attribute on methods
    • CallerArgumentExpression attribute
    • Enhanced #line pragma

    C# 11 (2022): The following features were added in C# 11:
    • Raw string literals
    • Generic math support
    • Generic attributes
    • UTF-8 string literals
    • Newlines in string interpolation expressions
    • List patterns
    • File-local types
    • Required members
    • Auto-default structs
    • Pattern match Span on a constant string
    • Extended nameof scope
    • Numeric IntPtr
    • ref fields and scoped ref
    • Improved method group conversion to delegate
    • Warning wave 7

  4. Adoption and Cross-Platform Support: C# gained popularity due to its integration with the .NET framework, which provided a rich set of libraries for building Windows applications. In recent years, Microsoft has made efforts to expand the reach of C# beyond Windows by open-sourcing the language and introducing cross-platform frameworks like .NET Core and Xamarin. With the introduction of .NET Core, C# can now be used to build applications that run on various platforms, including Windows, macOS, and Linux.

C# has become one of the most widely used programming languages, particularly in the Microsoft ecosystem, and is used for a wide range of applications, including desktop software, web development, mobile app development, game development, and more. Its evolution and continuous updates have made it a powerful and versatile language for modern software development.

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