let getActiveSQLServers() = [for serv in Sql.SqlDataSourceEnumerator.Instance.GetDataSources().Rows -> if System.DBNull.Value.Equals(serv.["InstanceName"]) then serv.["ServerName"] :?> string else ( serv.["ServerName"] :?> string + "\\" + (serv.["InstanceName"] :?> string) ) ].ToList()