visual studio - What does an executable compiled using C# have? -

as far understanding is,

1. any code written using c# or f# or vb.net, compiled respective compilers in visual studio il code.

2. so, .net framework runtime (clr) installed in client's machine use il code convert machine code , run program.

the question is, exe contain ? il , headers ?

in .net world, basic units of deployment called assemblies, .exe extension in case of application, or .dll extension in case of library.

in short, assembly contains 4 types of things:

1. an assembly manifest provides information .net runtime, such assembly’s name, version, requested permissions, , other assemblies references.
2. an application manifest provides information operating system, such how assembly should deployed , whether administrative elevation required.
3. compiled types: compiled il code , metadata of types defined within assembly.
4. and resources: other data embedded within assembly, such images , localizable text.

of above four, assembly manifest mandatory.