我创建了一个Web API，我试图抓取所有给出日期时间范围的记录。
public HttpResponseMessage GetMeterPing(DateTime start, DateTime end)
{
try
{
var startDateTime = start;
var endDateTime = end;
var result = medEntitites.tj_xhqd.Where(m => m.sjsj <= startDateTime && m.sjsj >= endDateTime)
.OrderByDescending(o => o.sjsj)
.Select(s => new { s.zdjh, s.sjsj, s.xhqd })
.Distinct().ToList();
return Request.CreateResponse(HttpStatusCode.OK, new { data = result});
}
catch (Exception ex)
{
return Request.CreateErrorResponse(HttpStatusCode.NotFound, ex);
}
}
WEB-API网址： http://localhost:14909/api/meters/GetMeterPing/2018-04-27T09:00:00/2018-04-26T21:00:00
响应：
{
"data": [
{
"zdjh": "002999000835",
"sjsj": "2018-04-26T23:59:59",
"xhqd": "22"
},
{
"zdjh": "002999001089",
"sjsj": "2018-04-27T00:00:00",
"xhqd": "19"
},
{
"zdjh": "002998000940",
"sjsj": "2018-04-27T00:00:01",
"xhqd": "26"
},
{
"zdjh": "002998000099",
"sjsj": "2018-04-27T00:00:01",
"xhqd": "25"
},
{
"zdjh": "002999001180",
"sjsj": "2018-04-27T00:00:01",
"xhqd": "17"
},
{
"zdjh": "002998001441",
"sjsj": "2018-04-27T00:00:01",
"xhqd": "31"
},
{
"zdjh": "002998002835",
"sjsj": "2018-04-27T00:00:02",
"xhqd": "31"
},
{
"zdjh": "002998000549",
"sjsj": "2018-04-27T00:00:02",
"xhqd": "29"
},
{
"zdjh": "002998001955",
"sjsj": "2018-04-27T00:00:02",
"xhqd": "31"
},
{
"zdjh": "002999000936",
"sjsj": "2018-04-27T00:00:02",
"xhqd": "26"
},
{
"zdjh": "002999001113",
"sjsj": "2018-04-27T00:00:03",
"xhqd": "24"
},
{
"zdjh": "002999000384",
"sjsj": "2018-04-27T00:00:03",
"xhqd": "19"
},
{
"zdjh": "002999000333",
"sjsj": "2018-04-27T00:00:04",
"xhqd": "19"
},
{
"zdjh": "002998000718",
"sjsj": "2018-04-27T00:00:05",
"xhqd": "22"
},
{
"zdjh": "002999000302",
"sjsj": "2018-04-27T00:00:05",
"xhqd": "28"
},
{
"zdjh": "002999000853",
"sjsj": "2018-04-27T00:00:05",
"xhqd": "29"
},
{
"zdjh": "002999001183",
"sjsj": "2018-04-27T00:00:07",
"xhqd": "23"
},
{
"zdjh": "002998000490",
"sjsj": "2018-04-27T00:00:07",
"xhqd": "23"
},
{
"zdjh": "002999000297",
"sjsj": "2018-04-27T00:00:08",
"xhqd": "29"
},
{
"zdjh": "002998000579",
"sjsj": "2018-04-27T00:00:08",
"xhqd": "31"
},
{
"zdjh": "002999001150",
"sjsj": "2018-04-27T00:00:09",
"xhqd": "16"
},
{
"zdjh": "002999000330",
"sjsj": "2018-04-27T00:00:09",
"xhqd": "28"
},
{
"zdjh": "002998000103",
"sjsj": "2018-04-27T00:00:09",
"xhqd": "13"
},
{
"zdjh": "002998002562",
"sjsj": "2018-04-27T00:00:09",
"xhqd": "28"
},
{
"zdjh": "002998003062",
"sjsj": "2018-04-27T00:00:11",
"xhqd": "25"
},
{
"zdjh": "002998002178",
"sjsj": "2018-04-27T00:00:13",
"xhqd": "19"
},
{
"zdjh": "002999000719",
"sjsj": "2018-04-27T00:00:13",
"xhqd": "21"
},
{
"zdjh": "002998002200",
"sjsj": "2018-04-27T00:00:14",
"xhqd": "27"
},
{
"zdjh": "002998000126",
"sjsj": "2018-04-27T00:00:14",
"xhqd": "23"
},
{
"zdjh": "002999000341",
"sjsj": "2018-04-27T00:00:15",
"xhqd": "23"
},
{
"zdjh": "002999001057",
"sjsj": "2018-04-27T00:00:16",
"xhqd": "26"
},
{
"zdjh": "002999001017",
"sjsj": "2018-04-27T00:00:16",
"xhqd": "25"
},
{
"zdjh": "002998000721",
"sjsj": "2018-04-27T00:00:16",
"xhqd": "26"
},
{
"zdjh": "002998000189",
"sjsj": "2018-04-27T00:00:21",
"xhqd": "31"
},
{
"zdjh": "002999000417",
"sjsj": "2018-04-27T00:00:22",
"xhqd": "25"
},
{
"zdjh": "002999000026",
"sjsj": "2018-04-27T00:00:24",
"xhqd": "24"
},
{
"zdjh": "002998004535",
"sjsj": "2018-04-27T00:00:25",
"xhqd": "17"
},
{
"zdjh": "002999000924",
"sjsj": "2018-04-27T00:00:26",
"xhqd": "21"
},
{
"zdjh": "002998001434",
"sjsj": "2018-04-27T00:00:26",
"xhqd": "28"
},
{
"zdjh": "002999000923",
"sjsj": "2018-04-27T00:00:28",
"xhqd": "27"
},
{
"zdjh": "002998001753",
"sjsj": "2018-04-27T00:00:30",
"xhqd": "23"
},
{
"zdjh": "002999000161",
"sjsj": "2018-04-27T00:00:31",
"xhqd": "31"
},
{
"zdjh": "002999000507",
"sjsj": "2018-04-27T00:00:32",
"xhqd": "20"
},
{
"zdjh": "002999000410",
"sjsj": "2018-04-27T00:00:32",
"xhqd": "31"
},
{
"zdjh": "002999000714",
"sjsj": "2018-04-27T00:00:33",
"xhqd": "16"
},
{
"zdjh": "002998000805",
"sjsj": "2018-04-27T00:00:34",
"xhqd": "22"
},
{
"zdjh": "002998001846",
"sjsj": "2018-04-27T00:00:35",
"xhqd": "29"
},
{
"zdjh": "002998003251",
"sjsj": "2018-04-27T00:00:36",
"xhqd": "26"
},
{
"zdjh": "002999000050",
"sjsj": "2018-04-27T00:00:37",
"xhqd": "25"
},
{
"zdjh": "002999000071",
"sjsj": "2018-04-27T00:00:38",
"xhqd": "22"
},
{
"zdjh": "002999000728",
"sjsj": "2018-04-27T00:00:39",
"xhqd": "10"
},
{
"zdjh": "002999001134",
"sjsj": "2018-04-27T00:00:41",
"xhqd": "30"
},
{
"zdjh": "002999000258",
"sjsj": "2018-04-27T00:00:42",
"xhqd": "29"
},
{
"zdjh": "002999001123",
"sjsj": "2018-04-27T00:00:45",
"xhqd": "30"
},
{
"zdjh": "002999001156",
"sjsj": "2018-04-27T00:00:46",
"xhqd": "31"
},
{
"zdjh": "002998000136",
"sjsj": "2018-04-27T00:00:47",
"xhqd": "19"
},
{
"zdjh": "002999000260",
"sjsj": "2018-04-27T00:00:47",
"xhqd": "19"
},
{
"zdjh": "002999001097",
"sjsj": "2018-04-27T00:00:48",
"xhqd": "31"
},
{
"zdjh": "002999000197",
"sjsj": "2018-04-27T00:00:48",
"xhqd": "24"
},
{
"zdjh": "002998003204",
"sjsj": "2018-04-27T00:00:50",
"xhqd": "19"
},
{
"zdjh": "002999000811",
"sjsj": "2018-04-27T00:00:53",
"xhqd": "26"
},
{
"zdjh": "002998004243",
"sjsj": "2018-04-27T00:00:55",
"xhqd": "20"
},
{
"zdjh": "002999000737",
"sjsj": "2018-04-27T00:00:55",
"xhqd": "29"
},
{
"zdjh": "002998002573",
"sjsj": "2018-04-27T00:01:02",
"xhqd": "31"
},
{
"zdjh": "002999000112",
"sjsj": "2018-04-27T00:01:05",
"xhqd": "27"
},
{
"zdjh": "002998001569",
"sjsj": "2018-04-27T00:01:05",
"xhqd": "25"
},
{
"zdjh": "002998003111",
"sjsj": "2018-04-27T00:01:08",
"xhqd": "23"
},
{
"zdjh": "002999000627",
"sjsj": "2018-04-27T00:01:08",
"xhqd": "13"
},
{
"zdjh": "002999000296",
"sjsj": "2018-04-27T00:01:10",
"xhqd": "24"
},
{
"zdjh": "002999001094",
"sjsj": "2018-04-27T00:01:12",
"xhqd": "18"
},
{
"zdjh": "002999000776",
"sjsj": "2018-04-27T00:01:13",
"xhqd": "19"
},
{
"zdjh": "002999001040",
"sjsj": "2018-04-27T00:01:16",
"xhqd": "19"
},
{
"zdjh": "002998003531",
"sjsj": "2018-04-27T00:01:17",
"xhqd": "31"
},
{
"zdjh": "002999000955",
"sjsj": "2018-04-27T00:01:18",
"xhqd": "20"
},
{
"zdjh": "002998002658",
"sjsj": "2018-04-27T00:01:26",
"xhqd": "29"
},
{
"zdjh": "002999000444",
"sjsj": "2018-04-27T00:01:30",
"xhqd": "15"
},
{
"zdjh": "002998001837",
"sjsj": "2018-04-27T00:01:34",
"xhqd": "31"
},
{
"zdjh": "002999001144",
"sjsj": "2018-04-27T00:01:35",
"xhqd": "23"
},
{
"zdjh": "002999000245",
"sjsj": "2018-04-27T00:01:42",
"xhqd": "31"
},
{
"zdjh": "002999001157",
"sjsj": "2018-04-27T00:01:45",
"xhqd": "30"
},
{
"zdjh": "002998002127",
"sjsj": "2018-04-27T00:01:47",
"xhqd": "17"
},
{
"zdjh": "002999000804",
"sjsj": "2018-04-27T00:01:48",
"xhqd": "14"
},
{
"zdjh": "002999001160",
"sjsj": "2018-04-27T00:01:50",
"xhqd": "31"
},
{
"zdjh": "002999000241",
"sjsj": "2018-04-27T00:01:51",
"xhqd": "27"
},
{
"zdjh": "002999000705",
"sjsj": "2018-04-27T00:01:51",
"xhqd": "24"
},
{
"zdjh": "002998003209",
"sjsj": "2018-04-27T00:01:53",
"xhqd": "19"
},
{
"zdjh": "002999001104",
"sjsj": "2018-04-27T00:01:55",
"xhqd": "25"
},
{
"zdjh": "002993000002",
"sjsj": "2018-04-27T00:01:58",
"xhqd": "25"
},
{
"zdjh": "002998003455",
"sjsj": "2018-04-27T00:01:59",
"xhqd": "22"
},
{
"zdjh": "002999000205",
"sjsj": "2018-04-27T00:01:59",
"xhqd": "25"
},
{
"zdjh": "002999000835",
"sjsj": "2018-04-27T00:02:01",
"xhqd": "21"
},
{
"zdjh": "002999001089",
"sjsj": "2018-04-27T00:02:01",
"xhqd": "19"
},
{
"zdjh": "002999000936",
"sjsj": "2018-04-27T00:02:02",
"xhqd": "25"
},
{
"zdjh": "002998001862",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "31"
},
{
"zdjh": "002998003582",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "14"
},
{
"zdjh": "002998002839",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "27"
},
{
"zdjh": "002998001520",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "31"
},
{
"zdjh": "002999001180",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "17"
},
{
"zdjh": "002998003174",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "31"
},
{
"zdjh": "002998003074",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "27"
},
{
"zdjh": "002998004583",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "31"
},
{
"zdjh": "002998003018",
"sjsj": "2018-04-27T00:02:03",
"xhqd": "25"
},
{
"zdjh": "002998003594",
"sjsj": "2018-04-27T00:02:04",
"xhqd": "31"
},
{
"zdjh": "002998000738",
"sjsj": "2018-04-27T00:02:04",
"xhqd": "28"
},
{
"zdjh": "002998001956",
"sjsj": "2018-04-27T00:02:04",
"xhqd": "31"
},
{
"zdjh": "002999000384",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "19"
},
{
"zdjh": "002998003577",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "14"
},
{
"zdjh": "002998003085",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "31"
},
{
"zdjh": "002998002079",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "22"
},
{
"zdjh": "002999001113",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "24"
},
{
"zdjh": "002999000333",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "18"
},
{
"zdjh": "002998002644",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "31"
},
{
"zdjh": "002998003087",
"sjsj": "2018-04-27T00:02:05",
"xhqd": "27"
},
{
"zdjh": "002998003173",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "20"
},
{
"zdjh": "002999000302",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "26"
},
{
"zdjh": "002998003263",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "14"
},
{
"zdjh": "002998001651",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "26"
},
{
"zdjh": "002999000853",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "29"
},
{
"zdjh": "002998001783",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "25"
},
{
"zdjh": "002998002694",
"sjsj": "2018-04-27T00:02:06",
"xhqd": "23"
},
{
"zdjh": "002998001409",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "22"
},
{
"zdjh": "002998003581",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "10"
},
{
"zdjh": "002998002685",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "28"
},
{
"zdjh": "002998004510",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "25"
},
{
"zdjh": "002998001644",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "22"
},
{
"zdjh": "002998002578",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "25"
},
{
"zdjh": "002998000310",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "23"
},
{
"zdjh": "002998003203",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "19"
},
{
"zdjh": "002998002163",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "16"
},
{
"zdjh": "002998000531",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "22"
},
{
"zdjh": "002998001955",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "31"
},
{
"zdjh": "002998000246",
"sjsj": "2018-04-27T00:02:07",
"xhqd": "22"
},
{
"zdjh": "002998003015",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "27"
},
{
"zdjh": "002999001183",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "24"
},
{
"zdjh": "002998002637",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "13"
},
{
"zdjh": "002998003086",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "29"
},
{
"zdjh": "002998001980",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "23"
},
{
"zdjh": "002998003163",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "19"
},
{
"zdjh": "002998001416",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "14"
},
{
"zdjh": "002998003036",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "22"
},
{
"zdjh": "002998003088",
"sjsj": "2018-04-27T00:02:08",
"xhqd": "21"
},
{
"zdjh": "002999000297",
"sjsj": "2018-04-27T00:02:09",
"xhqd": "29"
},
{
"zdjh": "002998000940",
"sjsj": "2018-04-27T00:02:09",
"xhqd": "26"
},
{
"zdjh": "002998001507",
"sjsj": "2018-04-27T00:02:09",
"xhqd": "22"
},
{
"zdjh": "002998001968",
"sjsj": "2018-04-27T00:02:09",
"xhqd": "25"
},
{
"zdjh": "002998002568",
"sjsj": "2018-04-27T00:02:09",
"xhqd": "18"
},
{
"zdjh": "002998001949",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "22"
},
{
"zdjh": "002999000330",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "28"
},
{
"zdjh": "002998003181",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "27"
},
{
"zdjh": "002998003253",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "26"
},
{
"zdjh": "002999001150",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "17"
},
{
"zdjh": "002998000746",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "25"
},
{
"zdjh": "002998002686",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "24"
},
{
"zdjh": "002998003035",
"sjsj": "2018-04-27T00:02:10",
"xhqd": "20"
},
{
"zdjh": "002998000733",
"sjsj": "2018-04-27T00:02:11",
"xhqd": "20"
},
{
"zdjh": "002998001829",
"sjsj": "2018-04-27T00:02:11",
"xhqd": "29"
},
{
"zdjh": "002998003206",
"sjsj": "2018-04-27T00:02:12",
"xhqd": "20"
},
]
}
注意： zdjh是米号，sjsj是米的ping日期时间，xhqd是ping值。
现在在上面的响应中，有多个相同zdjh的值。我想设置我的LINQ以便在单个zdjh =＆gt;米号上返回，其最后sjsj =＆gt; ping日期时间值和最后xhqd =＆gt; ping值
如何设置LINQ？任何帮助都将受到高度赞赏。
答案 0 :(得分：1)
这是你想要实现的目标吗？
medEntitites.tj_xhqd.OrderByDescending(x => x.zdjh).ThenByDescending(x => x.sjsj).ThenByDescending(x => x.xhqd).DistinctBy(x => x.zdjh).ToList();
区别于MoreLinq GitHub。