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chester89
chester89

Reputation: 8617

What language is .NET Framework written in?

The question I always wanted to ask and was afraid to, actually - what language is .NET Framework written in? I mean library itself.
It seems to me that it was C and C++ mostly. (I hope Jon Skeet is reading this one, it`ll be very interesting to hear what he thinks about it)

Upvotes: 53

Views: 24118

Answers (5)

shan
shan

Reputation: 77

.NET was fully written in C and C++ because the base was in assembly language. Integration of assembly with C is much easier compared to newer languages.

Upvotes: 6

user3089806
user3089806

Reputation: 59

Microsoft .NET Framework is divided in to many segments.

CLR: C++

IO/Signal Processing: Assembly

Baseclass Library: C#

System.Threading: C#

Complex Data Structure: C++

Example: GetHashCode

Upvotes: 5

Indrajit Ghosh
Indrajit Ghosh

Reputation: 125

CLR / Compilers - Visual C++

Baseclass Library - Simple Managed C (SMC)

http://blogs.msdn.com/b/jasonz/archive/2007/11/23/couple-of-historical-facts.aspx

Upvotes: -1

Jaimal Chohan
Jaimal Chohan

Reputation: 8645

The CLI/CLR is written in C/C++ and assembly. Almost all of the .NET framework classes are written in C# > compiled to IL, which runs in the CLR. If you crack open a framework library in Reflector, class, you may see an attribute such as [MethodImpl(MethodImplOptions.InternalCall)] which delegates the call to the CLI.

Upvotes: 65

JMP
JMP

Reputation: 7844

There are parts of the .NET Framework that are open-source, like ASP.NET MVC, and it's written in C#.

Since the .NET Framework represents many assemblies, I'd presume that different libraries are written in different languages. As long as the language is CLR-compliant, it can be used to build parts of the framework.

All said, though; I'd assume the lion's share of the .NET Framework is written in C++ and C#.

Upvotes: 4

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