如何制作一个简易的购物车后台

protected DataTable GetCartDataTable()  2 {  3 DataTable table = new DataTable();  4 table.Columns.Add(new DataColumn("Id", typeof(int)));  5 table.Columns.Add(new DataColumn("Code", typeof(String)));  6 table.Columns.Add(new DataColumn("Name", typeof(String)));  7 table.Columns.Add(new DataColumn("Desc", typeof(String)));  8 table.Columns.Add(new DataColumn("Price", typeof(float)));  9 table.Columns.Add(new DataColumn("Number", typeof(int))); 10 11 DataRow row = table.NewRow(); 12 row[0] = 101; 13 row[1] = "100022"; 14 row[2] = "商品一"; 15 row[3] = "这是商品一的介绍"; 16 row[4] = 35.5; 17 row[5] = 1; 18  table.Rows.Add(row); 19 20 row = table.NewRow(); 21 row[0] = 102; 22 row[1] = "100023"; 23 row[2] = "商品二"; 24 row[3] = "这是商品二的介绍"; 25 row[4] = 18.99; 26 row[5] = 2; 27  table.Rows.Add(row); 28 29 row = table.NewRow(); 30 row[0] = 103; 31 row[1] = "100024"; 32 row[2] = "商品三"; 33 row[3] = "这是商品三的介绍"; 34 row[4] = 18.99; 35 row[5] = 2; 36  table.Rows.Add(row); 37 38 row = table.NewRow(); 39 row[0] = 104; 40 row[1] = "100025"; 41 row[2] = "商品四"; 42 row[3] = "这是商品四的介绍"; 43 row[4] = 22.00; 44 row[5] = 1; 45  table.Rows.Add(row); 46 47 return table; 48 }