C#获取数据库中的Instance

select * from master..sysdatabases

 using (SqlConnection sqlConn = new SqlConnection(connStr))
            {
                if (sqlConn.State != ConnectionState.Open) 
                {
                    sqlConn.Open();
                }

                ArrayList instanceList = new ArrayList();

                SqlCommand sqlCmd = new SqlCommand("select name from master..sysdatabases", sqlConn);
                SqlDataReader sqlReader = sqlCmd.ExecuteReader();
                
                while(sqlReader.Read())
                {
                    instanceList.Add(sqlReader[0].ToString());
                }

                foreach (var instance in instanceList)
                {
                    Console.WriteLine(instance);
                }
            }