Question

I can’t figure how to add custom attribute to a method using Mono.Cecil
The attributes that I would want to add is like this :

.custom instance void [mscorlib]System.Diagnostics.DebuggerHiddenAttribute::.ctor() = ( 01 00 00 00 ) 

Does anyone know how to add custom attributes

Answer 1

It’s actually very easy.

ModuleDefinition module = ...;
MethodDefinition targetMethod = ...;
MethodReference attributeConstructor = module.Import(
    typeof(DebuggerHiddenAttribute).GetConstructor(Type.EmptyTypes));

targetMethod.CustomAttributes.Add(new CustomAttribute(attributeConstructor));
module.Write(...);