Can a static class extension be inlined?

Question

I have a tendency (throw back to c++ days) to add inlining hints to small methods, for example:

[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void Add(this IProject @this, IComponent component)
{
    @this.Components.Add(component);
}

I was wondering whether a static class extension-methods could be inlined in the first place?

Answer 1

Static methods can be inlined. See here for information on how to check if a method is being inlined. Extension methods are no different from normal static methods; in IL they are just decorated with a System.Runtime.CompilerServices.ExtensionAttribute , so they will be treated the same by the JIT.