I need an alternative to `Assembly.GetEntryAssembly()` that never returns null

Question

I need to find the assembly in which managed code execution started.

// using System.Reflection;
Assembly entryAssembly = Assembly.GetEntryAssembly();
         


        

Answer 1

Another (largely untested) starting point for a working solution might be something like this:

// using System;
// using System.Diagnostics;
// using System.Linq;
ProcessModule mainModule = Process.GetCurrentProcess().MainModule;
Assembly entryAssembly = AppDomain.CurrentDomain.GetAssemblies()
                         .Single(assembly => assembly.Location == mainModule.FileName);

Some uncertainties remain:

• Modules and assemblies are not the same thing. ProcessModule might even be conceptually different from Module. Would the above code always work in the presence of multi-module (i.e. multi-file) assemblies, especially when an assembly's entry point is not in the manifest module?

• Is Process.MainModule guaranteed to always returns a non-null reference?