CLI TOOL
dotnet-exec
Run C# code and scripts without the ceremony of a project file. Includes REPL, references, profiles, and testing support.
.NET engineer · open source builder
Building useful
things for .NET.
I’m Weihan Li — a backend engineer, Microsoft MVP, and open-source contributor. I build developer tools, share what I learn, and help make the .NET ecosystem a little better.
weihanli.cs
// A developer's operating principles
var developer = new Developer
{
Focus = "Solve real problems",
Craft = ".NET & C#",
Mindset = "Keep learning",
Community = true,
OpenSource = true
};
// Make it work. Make it clear. Make it useful.
BuildSomethingGood(); ▌
DOTNET · CSHARP · OPEN SOURCESTATUS: BUILDING
01 / A little context
Engineer by trade.
Builder by habit.
I care about pragmatic engineering, thoughtful APIs, developer experience, and sharing knowledge that helps other developers move faster.
10+ yrsBackend engineering experience
.NETPrimary ecosystem
OSSTools and libraries for developers
Learn → ShareWriting and community
02 / Selected projects
Small tools. Real impact.
A few projects from my open-source work. Repository details link directly to GitHub.
LIBRARY
WeihanLi.Common
A collection of practical .NET helpers, extensions, middleware, and building blocks shaped by real-world engineering.
HTTP CLIENT
dotnet-httpie
A developer-friendly command-line HTTP client for making requests, testing APIs, and working with HTTP files.
PLAYGROUND
.NET Lab
Explore C# and Razor compilation in the browser, with compiler insights and an interactive playground experience.
Featured projects selected from public repositories. Browse all repositories ↗
03 / What I work on
Curiosity, put to work.
The themes behind my projects, experiments, and technical notes.
01 — ENGINEERING
Reliable backend systems
Designing APIs and services with an eye for performance, maintainability, observability, and production realities.
02 — DEVELOPER EXPERIENCE
Tools that remove friction
Building CLI utilities, reusable libraries, and workflows that make everyday development simpler.
03 — COMMUNITY
Learn, write, contribute
Turning technical exploration into articles, open-source improvements, and useful knowledge for the community.
04 / Notes from the field
Sharing what I learn.
Technical writing is part of the craft: explain the why, show the how, and leave something reusable behind.
Deep dives into .NET and C#
Practical notes on language features, runtime behavior, libraries, architecture, and tools around the ecosystem.
Read on 博客园 ↗From experiments to reusable tools
Explore code, decisions, examples, and ongoing work directly in the repositories.
Explore GitHub ↗Have a good idea?
Let’s build something useful.
Open-source collaboration, .NET conversations, and interesting engineering problems are always welcome.