Create a "Record" class with fields corresponding to the CSV data you posted,
and mark it as serializable. Your webservice will be happy to return an array
of these.
Peter

Your question tells us what your data looks like, but nothing about
what the return type of your function is. Can you post the signature of
the web service-visible method, as well as an outline of any
non-framework types that may be used in that signature?

As for the "best way" to do it, that's probably to create a shell
return type struct or class and dump that. The web service framework
will automatically serialize it as XML:

public struct myReturnType
{
 public int ID;
 public string FirstName;
 public string LastName;
 public DateTime Date;
}

If your method has the following signature:

[WebMethod]public myReturnType[] GetRecords(...) { ... }

you'll get back something vaguely like:

<GetRecords>
 <myReturnType>
   <ID>1</ID>
   <FirstName>John</FirstName>
   ...
 </myReturnType>
 <myReturnType>
   <ID>2</ID>
   ...
 </myReturnType>
 ...
</GetRecords>

That's about the best way to use web services.

Stephan