Why the heck are you fannying around with pipes and so forth if all you need to do is talk to SQL Server Express?
Why not use the libraries that actually come as part of the .NET framework and save yourself a lot of wheel reinventing?
Then it's trivial:
using (SqlConnection con = new SqlConnection(strConnect))
using (SqlCommand cmd = new SqlCommand("SELECT Age, Description FROM myTable WHERE ID = @ID", con))
using (SqlDataReader reader = cmd.ExecuteReader())
int age = (int) reader["Age"];
string desc = (string) reader["Description"];