mysql数据库连接未释放

Question

应该是每个功能结束后,数据库未关闭
关键我该怎么去追踪！还是人家写的代码
给一个正确的处理方法

Answer 1

            using (SqlDr = cmd.ExecuteReader(CommandBehavior.CloseConnection))
            {
                if (SqlDr.Read())
                {
                    if (SqlDr != null)
                        SqlDr.Close();
                    return true;
                }
                else
                {
                    if (SqlDr != null)
                        SqlDr.Close();
                    return false;
                }
            }