Decompile your .NET Code FREE using ILSpy

Decompile your .NET Code FREE using ILSpy

Hey Reader,

A decompiler is a computer program that takes an executable file as input, and attempts to create a high level, compilable source file that does the same thing. It is therefore the opposite of a compiler, which takes a source file and makes an executable. Decompilers are considered as important tool in the process of reverse engineering.

ILSpy is the open-source .NET assembly browser and decompiler.

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ILSpy Features

ILSpy has got almost all the features which we wish a decompiler should have. Listing few of them here, rest you can find on their website.

  • Assembly browsing
  • IL Disassembly
  • Support C# 5.0 “async
  • Decompilation to C#
    • Supports lambda’s and ‘yield return
    • Shows XML documentation
  • Decompilation to VB
  • Saving of resources
  • Save decompiled assembly as .csproj
  • Search for types/methods/properties (substring)
  • Hyperlink-based type/method/property navigation
  • Base/Derived types navigation
  • Navigation history
  • Save Assembly as C# Project
  • Find usage of field/method

How to use ILSpy?

It’s very simple and easy to use ILSpy.

  1. Log on to
  2. Click on Download Binaries option
  3. Extract the downloaded zip files and run ILSpy.exe
  4. Click Open from File menu and navigate to the .DLL file you want to decompile.

Happy Decompiling!!

Reference Screenshots

This is how ILSpy looks at the time of writing this blog post.

Decompile Your .NET Code FREE Using ILSpy

Decompile Your .NET Code FREE Using ILSpy

List of Other Free Decompilers

There are plenty of decompilers available out there, you need to be wise enough to choose the right one as per your requirements. I will list a few of the popular one’s:

I have tried my level best to explain the topic – decompile your .NET code FREE using ILSpy. Hope this post turns out to be an utmost useful one for you.

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