Example #1
0
        protected void Page_Load(object sender, EventArgs e)
        {
            System.Diagnostics.Stopwatch stopwatch = new Stopwatch();
            stopwatch.Start(); //  开始监视代码

            using (DNetContext db = new DNetContext())
            {
                var author = db.GetSingle <Author>(m => true, q => q.OrderBy(m => m.AuthorID));

                var book = db.GetSingle <Book>(m => ((DateTime)m.PublishDate).ToString("yyyy-MM-dd") == "2017-11-11");

                var authors = db.GetList <Author>(m => string.IsNullOrEmpty(m.AuthorName) && m.IsValid == true);

                List <dynamic> name = db.GetDistinctList <Author>(m => m.AuthorName.StartsWith("jim") && m.IsValid == true, m => m.AuthorName + "aaa");

                //List<string> name1 = db.GetDistinctList<Author, string>(m => m.AuthorName.IndexOf("jim") == 2 && m.IsValid == true, m => m.AuthorName);

                var books = db.GetList <Book>(m => SubQuery.GetList <Author>(n => n.AuthorID > 10, n => n.AuthorID).Contains(m.AuthorID));

                books = db.GetList <Book>(m => m.AuthorID >= SubQuery.GetSingle <Author>(n => n.AuthorID == 10, n => n.AuthorID));

                var authorid = db.GetMax <Author>(m => (int)m.AuthorID);

                WhereBuilder <Author> where = new WhereBuilder <Author>();
                where.And(m => m.AuthorName.Contains("jim"));
                where.And(m => m.AuthorID == 3);
                where.Or(m => m.IsValid == true);
                db.GetList <Author>(where.WhereExpression);


                PageFilter <Author> page = new PageFilter <Author> {
                    PageIndex = 1, PageSize = 10
                };
                page.And(m => "jim green".Contains(m.AuthorName));
                page.OrderBy(q => q.OrderBy(m => m.AuthorName).OrderByDescending(m => m.AuthorID));
                PageDataSource <Author> pageSource = db.GetPage <Author>(page);
            }
            stopwatch.Stop();                                   //  停止监视
            TimeSpan timespan     = stopwatch.Elapsed;          //  获取当前实例测量得出的总时间
            double   milliseconds = timespan.TotalMilliseconds; //  总毫秒数

            Response.Write("执行时间:" + milliseconds + "毫秒");
        }