Counting Lists and Arrays (VB)

I have a quick question about counting Lists and Arrays.

I have a component input called crv.  I want to count the number of curves coming in.

But, sometimes I also want to sort the curves, and add them to respective lists.  At that point, each time I add a curve, it seems to (from my understanding) create a new array within the list.

Correct me if I am wrong, but isn't everything an array in the grasshopper componenet?  If I say;

Dim pts as Point3d

I am essentially creating an array called 'pts.'  Right?

Questions:

1.  How do I count arrays of objects (like curves, points, etc.) in VB?

2.  How do I count the number of arrays within lists?  Since each time I add a member to a list, it is given the index 0.

Regards,

Matt