PE and Platform Kinds

Assembly a = Assembly.GetExecutingAssembly();
Module m = a.ManifestModule;
PortableExecutableKinds peKinds;
ImageFileMachine imageFileMachine; m.GetPEKind(out peKinds, out imageFileMachine);

if ((peKinds & PortableExecutableKinds.ILOnly) != 0)
{
   // Assembly is platform independent.
}
else
{
   // assembly is platform dependent
   switch (imageFileMachine)
   {
       case ImageFileMachine.I386:
           // i386, x86, IA-32, ... dependent.
           break;
       case ImageFileMachine.IA64:
           // IA-64 dependent.
           break;
       case ImageFileMachine.AMD64:
           // AMD-64, x64 dependent.
           break;
   }

}