Databases :: Getting Text Of Parametrized Query?

I have a the following code to get data from an oracle database using

a parameterized query:

conn = New OracleConnection(connectionstring)
comm = New OracleCommand("select name from Cust_name
from Name_Table Where last_name = :lastname", conn)
parmLastName = New OracleParameter("lastname", OracleDbType.Varchar2)
parmLastName.Value = "Jones"
comm.Parameters.Add(parmLastName)

I am trying to write an audit that will tell me what users are doing, so I would like to get the actual sql that is submitted. This is just one example of the query, there are many more so I would like to make it as general as possible. I would like to actually see "

select name from Cust_name from Name_Table

Where last_name = "Jones". I know I could just create the text