c# 大批量用户访问数据库报错

报错信息：There is already an open DataReader associated with this Connection which must be closed first

缓解的方案：在实例化database的时候利用线程独立实例化，每个线程一个单独的database实例

        [ThreadStatic]
        private static Database _threadInstance = null;

        protected Database DB = CreateDatabase();

        public static Database CreateDatabase()
        {
            if (_threadInstance == null)
            {
                _threadInstance = new Database(connectionStr);
            }
            return _threadInstance;
        }

随笔记录。