如果 From & To date 是相同的记录不过滤 LINQ

Question

我正在使用 Where 子句根据 Dates 过滤记录，但它不起作用。 From and To date is same & one record comes within the same date but that getting eliminates.

todate {11/6/2018 12:00:00 AM} //while debugging

if (toDate != "0")
{
    var todate = DateTime.Parse(toDate).Date;
    query = query.Where(x => x.CreatedDate.Date <= todate);
}
var homework = query.Select(x => new StudentHomework
{
    HomeworkId = x.HomeworkID,
    CreatedDate = x.CreatedDate
}).OrderByDescending(i => i.CreatedDate).Skip(pageLong * recordLong - recordLong).Take(recordLong);
return homework.Any()
    ? Request.CreateResponse(HttpStatusCode.OK, homework)
    : Request.CreateResponse(HttpStatusCode.NoContent);

在VS中调试时从db来一条记录到controller

但是 query 正在显示 0 条记录，并且在 ResulView 中显示以下消息

Message = "The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.

如果我在我的移动应用程序中删除过滤器 json 结果会变成这样

"HomeworkId": 1400,
"ClassName": "Class 1",
"SectionName": "N/A",
"SubjectName": "Mathematics",
"IsAnswered": false,
"CreatedDate": "2018-11-06T00:00:00",

Answer 1

首先感觉很蠢，问了个乱七八糟的问题浪费大家的时间。这里的问题是这一行的 .Date

query = query.Where(x => x.CreatedDate.Date <= todate);

在 LINQ to Entities 中我不应该有 .Date 并且它不允许抛出 Exception。删除后一切正常。我有 try catch 块，但控件没有跳转到它。

如果 From & To date 是相同的记录不过滤 LINQ

If From & To date is same record not filtering LINQ

c#

asp.net

.net

linq

class-library