Consulta con conexión DSNLess a MySql desde C#

using System.Data.Odbc;


string odbcconnstr = "Driver={MySQL ODBC 3.51 Driver};Server=servidor;Database=base;User=usuario;Password=password;Port=puerto;Option=4";

OdbcConnection conn;

conn = new OdbcConnection(odbcconnstr);
conn.Open();
OdbcCommand cmd = new OdbcCommand();
cmd.Connection = conn;
cmd.CommandText = "select * from tabla";
OdbcDataReader dr = cmd.ExecuteReader();

while (dr.Read())
{
   // codigo                   
}

conn.Close();