ILSpy is the open-source .NET assembly browser and decompiler. Visual Studio 2022 ships with decompilation support for F12 enabled by default (using our engine v7.1). In Visual Studio 2019, you have to manually enable F12 support. Go to Tools / Options / Text Editor / C# / Advanced and check Enable navigation to decompiled source. C# for Visual Studio Code ships with decompilation support as well. To enable, activate the setting "Enable Decompilation Support. ILSpy is distributed under the MIT License. Please see the About doc for details, as well as third-party notices for included open-source libraries. Visual Studio 16.3 and later include a version of the .NET (Core) SDK that is managed by the Visual Studio installer - once you update, it may get upgraded too. Please note that ILSpy is only compatible with the .NET 6.0 SDK and Visual Studio will refuse to load some projects in the solution.

Features

  • Decompilation to C#
  • Whole-project decompilation
  • Search for types/methods/properties
  • Hyperlink-based type/method/property navigation
  • Base/Derived types navigation, history
  • Assembly metadata explorer

Project Samples

ILSpy Screenshot 1

Project Activity

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Categories

Decompilers

License

MIT License

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ILSpy Web Site

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  • dappervoid Posted 2025-07-10
    The best .NET decompiler I've used
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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

C#

Related Categories

C# Decompilers

Registered

2022-09-09
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