Question

！[我想在视图中对具有相同名称的项目进行分组并对其进行计数] [1]

2   1   Mouse   GRC-85044   1   0   1   2018-06-28 13:57:39.657 <Binary data>   NULL
3   1   Laptop  GRC-09821   2   0   1   2018-06-28 15:38:53.150 <Binary data>   NULL
4   2   Zebra P4T   GRC-77172   1   0   1   2018-06-29 08:18:20.743 <Binary data>   NULL
5   2   A4/A5 Colour Printer    GRC-09243   2   0   1   2018-06-29 08:19:15.620 <Binary data>   NULL
6   3   Hand Gloves GRC-24963   2   0   1   2018-06-29 08:20:08.077 <Binary data>   NULL
7   4   Test-Tube Holder (Big)  GRC-13199   1   0   1   2018-06-29 08:21:08.857 <Binary data>   NULL
8   4   Medical Glove   GRC-22715   1   0   1   2018-06-29 08:21:53.303 <Binary data>   NULL
9   3   Field Gloves    GRC-23547   2   0   1   2018-06-29 08:22:42.710 <Binary data>   NULL
10  3   Nose Cover  GRC-55003   2   0   1   2018-06-29 08:24:16.383 <Binary data>   NULL
11  1   Keyboard    GRC-79451   1   0   1   2018-06-29 08:37:12.937 <Binary data>   NULL
12  1   Keyboard    GRC-29799   1   0   1   2018-06-29 08:38:08.880 <Binary data>   NULL
13  4   Test-Tube Holder (Big)  GRC-82984   1   0   1   2018-06-29 08:42:53.033 <Binary data>   NULL
14  4   Test-Tube Holder(small) GRC-72426   2   0   1   2018-06-29 08:43:24.757 <Binary data>   NULL
15  3   Medical Glove   GRC-43007   2   0   1   2018-06-29 08:49:16.367 <Binary data>   NULL
16  2   A4/A5 Colour Printer    GRC-68434   1   0   1   2018-06-29 08:50:22.363 <Binary data>   NULL
17  5   Samung A10  GRC-40503   5   0   1   2018-06-29 09:01:55.550 <Binary data>   NULL
18  5   Samung A10  GRC-12560   3   0   1   2018-06-29 09:02:53.657 <Binary data>   NULL
19  1   Getac S4    GRC-53087   1   0   1   2018-06-29 09:03:51.423 <Binary data>   NULL
NULL    NULL    NULL    NULL    NULL    NULL    NULL    NULL    NULL    NULL

我想将具有相同名称和ID的项目分组在一起，并计数每个可用项目的数量尝试过：

var d = from r in data group r by r.CatagorieId into g select g;
ViewBag.d = d.Count();

IEnumerable<Item> data = db.Items;

Answer 1

items.GroupBy(i => i.Name)
     .Select(g => new KeyValuePair<string, int>(g.Key, g.Count()))

我想将具有相同名称和计数值的项目分组，也将其作为总计数项放在视图包中

1 个答案: