How to Assemble .NET IL Code Directly Using Mono.Cecil

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A developer tutorial on DEV Community demonstrates how to assemble .NET Intermediate Language (IL) code directly, reversing the typical disassembly process. The guide uses Mono.Cecil to programmatically create an assembly, define a public class, and write IL instructions for a parameterless constructor. Key IL concepts are explained, including stack-based execution, the hidden 'this' parameter, and load/store instruction pairs. The tutorial also highlights a quirk in the .NET runtime where omitting a 'ret' instruction causes execution to continue into adjacent memory. The series aims to build toward a reusable helper and a working 'Hello, World' example written entirely in raw IL.

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