What does “external code” in the call stack mean?

Question

I call a method in Visual Studio and attempt to debug it by going over the call stack.

Some of the rows in it are marked \"External code\".

What exactly does thi

Answer 1

Those lines are not referenced by the debug symbols that you currently have loaded.

This code may be part of an external DLL, or native code inside the CLR. If you know which module it is, and have debug symbols for them, you can load them into Visual Studio manually.