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Articles and discussions should be directly related to the C# programming language. (Not to be confused with C (#c), C++ (#cpp), or Objective C (#objectivec))

Questions are encouraged! (See the #help tag)

Be careful when criticizing C# as a language or platform; most such complaints are old news. Criticisms are permitted, but please keep such discussions polite and objective.

C# is a compiled programming language developed by Microsoft in 2000, as part of their .NET platform. It offers features of imperative, declarative, object-oriented, functional, and component-oriented programming.

Although based on C++, C# is a distinct language with its own unique design and specification.

The current stable release is C# 7.3.

Documentation

Compilers

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Oct 28

Supabase .NET DevLog #16

#supabase #csharp #dotnet #opensource

1 min read

Sukhpinder Singh

Oct 23

The string.Create I Didn't Need

#csharp #dotnet #programming #webdev

4 min read

MICHAEL-MAURICE

Oct 23

5 Ways a MediatR Pipeline Quietly Goes Wrong (and the .NET 10 Tests That Caught Them)

#dotnet #csharp #architecture #cqrs

6 min read

ibrahim Kılıç

Oct 24

Your AI coding agent can leak one customer's data to another — and every test will still pass

#dotnet #csharp #security #ai

7 min read

Sukhpinder Singh

Oct 23

I Allocated 1.5 GB Just to Add Vectors Together

#csharp #dotnet #programming #webdev

5 min read

Oct 23

One app, two native codebases: how I keep Swift and C# in step, and ship both from one commit

#opensource #swift #csharp #productivity

4 min read

Jeremy

Oct 22

Part 5: After the Dispatch - Handling Delivery Events

#csharp #programming #opensource #dotnet

14 min read

Oct 22

Assembling Context for the Model

#dotnet #csharp #qdrant #rag

15 min read

Florentin Badea

Oct 22

SelectPdf vs IronPDF in 2026, measured on Windows and Linux

#dotnet #csharp #pdf #benchmark

7 min read

Dhana

Oct 22

Task.Delay vs Thread.Sleep: 100 Waiting Tasks Took 1 Second or 5 Seconds

#dotnet #csharp #async #performance

5 min read

Oct 22

An Empty Field Is Still Signed Data

#testing #csharp #security #dotnet

4 min read

Sukhpinder Singh

Oct 26

The GUID That Sorts Itself (Until It Doesn't)

#csharp #dotnet #programming #webdev

5 min read

Jeremy

Oct 21

Part 4: One Intent, Many Channels and Providers

#dotnet #opensource #programming #csharp

10 min read

Oct 26

Verifying Razorpay subscription webhooks in ASP.NET Core (the parts that bit me)

#dotnet #csharp #webdev #payments

2 min read

Mark

Oct 21

I didn't write this Excel formula engine. Here is why I trust it anyway

#dotnet #csharp #opensource #ai

6 min read

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