I think your question is still not very clear.

However, assuming ArrayList would be one possible implementation, you
should consider using the generic List<> class instead.  It provides
much of the same functionality, but as a safely typed collection object.

Of course, this assumes that the data you're putting into the list has a
consistent type.  If not, then perhaps ArrayList is the right solution
after all.

Pete

Perhaps the problem is your assumption that you want to put the data
into a multidimensional array in the first place.  Why do you want to
do this? What do you really want to do with the data?  Putting into
the array implies multi-pass handling of data (one pass to read it
from csv into array, and a second pass through the array to do
whatever you really want to do with the data).  If you can just get
directly from CSV to result then there is no need for the array.

Sam

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Jeff, others have given you great advice.

Here are some specifics that might help.

First, create a class to store each record from your csv.  Something
like this:

   public class Record
   {
       public Record(string field1, string field2, string field3) {
           _field1 = field1;
           _field2 = field2;
           _field3 = field3;
       }
       private string _field1;
       private string _field2;
       private string _field3;

       public void DoSomething() {
           Console.WriteLine("{0}, {1} and {2}",
                             _field1, _field2, _field3);
       }
   }

As stated in the replies to your original message, the recommended
(and .NET 2.0+) approach is to use Generics (List<T> specifically).

   List<Record> _myRecordsGen = new List<Record>();
   // Create a list of Record objects.  (You mentioned you had no
problem extracting
   // data from your data source).
   _myRecordsGen.Add(new Record("f1 of 1 (gen)", "f2 of 1 (gen)", "f3
of 1 (gen)"));
   _myRecordsGen.Add(new Record("f1 of 2 (gen)", "f2 of 2 (gen)", "f3
of 2 (gen)"));
   _myRecordsGen.Add(new Record("f1 of 3 (gen)", "f2 of 3 (gen)", "f3
of 3 (gen)"));

   // Get your Record objects out of the list (and do something with
each).
   foreach (Record record in _myRecordsGen) {
       record.DoSomething();
   }

You mentioned you think you might need to use an ArrayList.  This is
true if you're using .NET 1.x.  Here's the same example using an
ArrayList.

   ArrayList _myRecordsAL = new ArrayList();
   // Create a list of Record objects.
   _myRecordsAL.Add(new Record("f1 of 1 (al)", "f2 of 1 (al)", "f3 of
1 (al)"));
   _myRecordsAL.Add(new Record("f1 of 2 (al)", "f2 of 2 (al)", "f3 of
2 (al)"));
   _myRecordsAL.Add(new Record("f1 of 3 (al)", "f2 of 3 (al)", "f3 of
3 (al)"));

   // Get your Record objects out of the list (and do something with
each).
   foreach (Record record in _myRecordsAL) {
       record.DoSomething();
   }

HTH
-Jay