dnlab

Content rating
Everyone
1+
Downloads
Content rating
Everyone
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Disclaimer: this is not an official Microsoft product.

Also known as ".NET Lab."

For more details, see https://github.com/jjonescz/DotNetLab.

Features:
- Razor/CSHTML to generated C# code / IR / Syntax Tree / Errors.
- C# to IL / Syntax / IOperation / Symbols / decompiled-C# / JIT Asm / Errors / Execution console output.
- Any Roslyn/Razor compiler version (NuGet official builds or CI builds given PR number / branch / build number).
- VSCode Monaco Editor.
- Multiple input sources (especially useful for interlinked Razor components).
- C# Language Services (completions, live diagnostics, code fixes).
- Configuring any C# options (e.g., LangVersion, Features, OptimizationLevel, AllowUnsafe) via Roslyn C# APIs or via #:property directives (both with editor completions).
- Referencing NuGet packages via #:package directives.
Updated on
Jul 2, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

What’s new

v1.24.0: improve virtual keyboard

- Add JIT disassembler to the Android app
- Avoid virtual keyboard in output editor and allow its toggling in input editor
- Improve tree span display of symbols and bound nodes

For more details and previous releases, see https://github.com/jjonescz/DotNetLab/releases