Detect if data retrieved in View

Lets say I have this View on MyTable:

    CREATE VIEW MyView (IDValue, LastName, FirstName)
        AS SELECT IDValue, LastName, FirstName FROM MyTable;

Is there a way in the View that I can tell that data is being retrieved versus data just being counted? 

E.g., Data retrieved:

    SELECT FirstName FROM MyView;

Data Counted - no column data retrieved:

    SELECT COUNT(*) WHERE FirstName IS NOT NULL;

My research shows that there is not, but I was hoping that someone knew of a technique.

Thanks.