How to LOAD DATA INFILE in mysql with first col being Auto Increment?

Currently, We have a table similar to this:

---------------------
ID | AField | BField|
---------------------

The ID is Auto Increment

How do I create a CSV that can let the database auto populate the ID field with auto increment number?

We've tried the following CSV but it doesn't work:

afieldvalue, bfieldvalue (With Column definition but still doesn't work)
0,afieldvalue,bfieldvalue 
NULL,afieldvalue,bfieldvalue