void SetDefaultConnectionParameters ()
{
if (parms == null)
parms = new TdsConnectionParameters ();
else
parms.Reset ();
dataSource = string.Empty;
connectionTimeout = DEFAULT_CONNECTIONTIMEOUT;
connectionReset = true;
pooling = true;
maxPoolSize = DEFAULT_MAXPOOLSIZE;
minPoolSize = DEFAULT_MINPOOLSIZE;
packetSize = DEFAULT_PACKETSIZE;
port = DEFAULT_PORT;
#if NET_2_0
async = false;
#endif
}