可空对象必须使用LINQ值 [英] nullable object must have a value using LINQ

问题描述

我需要使用今天的日期从DetailDB过滤记录

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当我试图以这种方式过滤，我有0条记录。

 DetailDB.Where（x = >  x.DateWorked == DateTime 。现在; 

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当我尝试这种方式时出现错误：

可以为空的对象必须有一个值

 DetailDB.Where（x = >  x.DateWorked.Value.Date == DateTime.Now.Date）; 

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请帮助我如何过滤它：（

解决方案

尝试：

  var  xx = DetailDB.Where（x = >  x.DateWorked ==  null ？ false  :(（DateTime）x.DateWorked）.Date == DateTime.Now.Date）; 

I need to filter records from DetailDB using todays Date
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When i tried to filter in this way, i got 0 records.

DetailDB.Where(x => x.DateWorked == DateTime.Now);

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When i tried this way i got error:
nullable object must have a value

DetailDB.Where(x => x.DateWorked.Value.Date == DateTime.Now.Date);

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Please help how do i filter it :(

解决方案

Try:

var xx = DetailDB.Where(x => x.DateWorked == null ? false : ((DateTime)x.DateWorked).Date == DateTime.Now.Date);

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