Does list.count physically iterate through the list to count it, or does it keep a pointer

Question

I am stepping through a large list of object to do some stuff regarding said objects in the list.

During my iteration, I will remove some objects from the list depen

Answer 1

As stated here under the remarks tab http://msdn.microsoft.com/en-us/library/27b47ht3(v=vs.110).aspx

Retrieving the value of this property is an O(1) operation.

Which means no iteration is occurring.