Versions
| Version | Visual Studio | .NET Library | Released |
| C# 12.0 | Visual Studio 2022 | .NET 8.0 | preview |
| C# 11.0 | Visual Studio 2022 | .NET 7.0 | 2023 March |
| C# 10.0 | Visual Studio 2022 | .NET 6.0 | 2021 November |
| C# 9.0 | Visual Studio 2019 | .NET 5.0 | 2020 November |
| C# 8.0 | Visual Studio 2017 | .NET Framework 4.8 | 2019 April |
| C# 7.0 | Visual Studio 2015 | .NET Framework 4.7 | 2017 April |
| C# 6.0 | Visual Studio 2013 | .NET Framework 4.6 | 2015 July |
| C# 5.0 | Visual Studio 2012 | .NET Framework 4.5 | 2012 August |
| C# 4.0 | Visual Studio 2010 | .NET Framework 4.0 | 2010 April |
| C# 3.0 | Visual Studio 2008 | .NET Framework 3.5 | 2007 November |
| C# 2.0 | Visual Studio 2005 | .NET Framework 2.0 | 2005 September |
| C# 1.0 | Visual Studio 2003 | .NET Framework 1.1 | 2003 August |
C# 12.0
.NET 8.0 introduced in Visual Studio 2022.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-12
C# 11.0
.NET 7.0 introduced in Visual Studio 2022.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-11
C# 10.0
.NET 6.0 introduced in Visual Studio 2022.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-10
| Record structs | |
| Global using directives | |
| File-scoped namespace declaration | |
| Extended Proptery Patterns | |
| Null Parameter Checking | |
| Constant interpolated strings | |
| Enhanced #line pragma |
| Record structs |
| Global using directives |
| File-scoped namespace declaration |
| Extended Proptery Patterns |
| Null Parameter Checking |
| Constant interpolated strings |
| Enhanced #line pragma |
C# 9.0
.NET 5.0 introduced in Visual Studio 2019.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-9
| Record types | |
| Positional syntax for property definition | |
| Immutability | |
| Value equality | |
| Nondestructive mutation | |
| Built-in formatting for display | |
| Inheritance | |
| Init only setters | |
| Top-level statements | |
| Pattern matching enhancements | |
| Performance and interop | |
| Fit and finish features | |
| Support for code generators |
| Record types |
| Positional syntax for property definition |
| Immutability |
| Value equality |
| Nondestructive mutation |
| Built-in formatting for display |
| Inheritance |
| Init only setters |
| Top-level statements |
| Pattern matching enhancements |
| Performance and interop |
| Fit and finish features |
| Support for code generators |
Record types
You use the record keyword to define a reference type that provides built-in functionality for encapsulating data.
public record Person(string FirstName, string LastName);
C# 8.0
.NET Framework 4.8 introduced in Visual Studio 2019.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-8
| Readonly members | |
| Default interface methods | |
| Using declarations | |
| Static local functions | |
| Disposable ref structs | |
| Nullable reference types |
| Readonly members |
| Default interface methods |
| Using declarations |
| Static local functions |
| Disposable ref structs |
| Nullable reference types |
C# 7.0
.NET Framework 4.7 introduced in Visual Studio 2017.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-7
| Discards | More Details |
| is Operator Pattern Matching | More Details |
| Local functions | |
| out Variables | More Details |
| Reference Variables | |
| Tuples and Deconstruction |
| Discards More Details |
| is Operator Pattern Matching More Details |
| Local functions |
| out Variables More Details |
| Reference Variables |
| Tuples and Deconstruction |
C# 6.0
.NET Framework 4.6 introduced in Visual Studio 2015.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-6
| Auto-Property Initializers | More Details |
| Dictionary Initializers | More Details |
| Exception Filters | More Details |
| nameof Operator | More Details |
| Null-Conditional Operator | More Details |
| Primary Constructors | More Details |
| Static Imports | More Details |
| String Interpolation | More Details |
| Auto-Property Initializers More Details |
| Dictionary Initializers More Details |
| Exception Filters More Details |
| nameof Operator More Details |
| Null-Conditional Operator More Details |
| Primary Constructors More Details |
| Static Imports More Details |
| String Interpolation More Details |
C# 5.0
.NET Framework 4.5 introduced in Visual Studio 2012.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history
| async /await | More Details |
| Caller Information Attributes | More Details |
| async /await More Details |
| Caller Information Attributes More Details |
C# 4.0
.NET Framework 4.0 introduced in Visual Studio 2010.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history
| Dynamic/Late Binding - dynamic | More Details |
| Embedded Interop Types | More Details |
| Managed Extensibility Framework (MEF) | |
| Named Parameters | More Details |
| Optional Parameters | More Details |
| Parameterized Properties (VSTO) | More Details |
| System.Collections.Generic.SortedSet | More Details |
| System.Lazy | More Details |
| System.Numerics | More Details |
| System.Threading.Task | More Details |
| System.Tuple | More Details |
| Type Variance | More Details |
| Dynamic/Late Binding - dynamic More Details |
| Embedded Interop Types More Details |
| Managed Extensibility Framework (MEF) |
| Named Parameters More Details |
| Optional Parameters More Details |
| Parameterized Properties (VSTO) More Details |
| System.Collections.Generic.SortedSet More Details |
| System.Lazy More Details |
| System.Numerics More Details |
| System.Threading.Task More Details |
| System.Tuple More Details |
| Type Variance More Details |
C# 3.0
.NET Framework 3.5 introduced in Visual Studio 2008.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history
| Office Interop API Extensions (VSTO) | More Details |
| Anonymous Types | More Details |
| Auto Implemented Properties | More Details |
| Collection Initializers | More Details |
| Expression Trees | More Details |
| Extension Methods | More Details |
| Generic Delegates | More Details |
| Implicitly Typed Variables - var | More Details |
| Lambda Expressions | More Details |
| Language Intergrated Query (LINQ) | More Details |
| Object Initializers | More Details |
| Partial Methods | More Details |
| Query Expressions | More Details |
| System.Collections.Generic.HashSet | More Details |
| Office Interop API Extensions (VSTO) More Details |
| Anonymous Types More Details |
| Auto Implemented Properties More Details |
| Collection Initializers More Details |
| Expression Trees More Details |
| Extension Methods More Details |
| Generic Delegates More Details |
| Implicitly Typed Variables - var More Details |
| Lambda Expressions More Details |
| Language Intergrated Query (LINQ) More Details |
| Object Initializers More Details |
| Partial Methods More Details |
| Query Expressions More Details |
| System.Collections.Generic.HashSet More Details |
C# 2.0
.NET Framework 2.0 introduced in Visual Studio 2005.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history
| Anonymous Methods | More Details |
| Covariance and Contravariance | More Details |
| Generics | More Details |
| Iterators | More Details |
| Nullable Types | More Details |
| Partial Classes | More Details |
| Static Classes | More Details |
| Anonymous Methods More Details |
| Covariance and Contravariance More Details |
| Generics More Details |
| Iterators More Details |
| Nullable Types More Details |
| Partial Classes More Details |
| Static Classes More Details |
C# 1.0
.NET Framework 1.1 introduced in Visual Studio 2003.
link - learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history
| Classes | More Details |
| Delegates | More Details |
| Events | More Details |
| Interfaces | More Details |
| Properties | More Details |
| Reflection | More Details |
| Structures | More Details |
| Classes More Details |
| Delegates More Details |
| Events More Details |
| Interfaces More Details |
| Properties More Details |
| Reflection More Details |
| Structures More Details |
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