Question

Other than setting a debug variable and incrementing it every time you start the foreach, when you break in with the Visual Studio debugger connected, is there a way to tell that this is the Xth time through the loop?

I guess this would be a feature of Visual Studio if anything, not something that would be added to the compiled code.

Answer 1

Heres a previous Stack Overflow question that seems to be what your looking for:
get-index-of-current-foreach-iteration

Answer quoted from that link:

Foreach is for iterating over collections that implement IEnumerable.
It does this by calling GetEnumerator on the collection, which will
return an Enumerator.

This Enumerator has a method and a property:

• MoveNext()
• Current

Current returns the object that Enumerator is currently on, MoveNext
updates Current to the next object.

Obviously, the concept of an index is foreign to the concept of
enumeration, and cannot be done.

Because of that, most collections are able to be traversed using an
indexer and the for loop construct.

I greatly prefer using a for loop in this situation compared to
tracking the index with a local variable.