// Create the package.
Package pkg = new Package();
// Add a ConnectionManager to the Connections collection.
ConnectionManager connMgr = pkg.Connections.Add("ADO.NET:OLEDB");
connMgr.Properties["RetainSameConnection"].SetValue(connMgr , true);
connMgr.ConnectionString = connStr;
// Aqcuire the connection.
object connection = connMgr.AcquireConnection(null);