将DateTime.Now与SQL Server的开始时间和结束时间进行比较

Question

I've been struggling with this for hours and am sure there is a simple explanation.

I have a SQL Server table that contains the columns DayOfWeek ( DateTime ), StartTime ( Time ), EndTime ( Time ).

I am trying to write a lambda select that gets all the rows where DateTime.Now is the same DayOfWeek , greater than StartTime and less than EndTime .

I think I have to use the SQL Server type Time as C# Timespan but I'm just not getting it right.

I've tried to work from the explanation here ( Datetime.now as TimeSpan value? ) but to no avail.

My line of code is:

context.DayAndTimeModifiers
       .Where(x => x.IsActive && (int)d.DayOfWeek == x.DayOfWeek 
                   && d.??? > x.StartTime 
                   && d.??? < x.EndTime)

Any help much appreciated.

Answer 1

I don't know how I missed it, DateTime.Now.TimeOfDay is what I needed. Here's the adjusted line of code...

var d = DateTime.Now;

return context.DayAndTimeModifiers
              .Where(x => x.IsActive && (int)d.DayOfWeek == x.DayOfWeek && 
                          d.TimeOfDay > x.StartTime && d.TimeOfDay < x.EndTime).ToList();