实体框架在哪里像C＃

Question

I want to convert this query to entity framework query in c#

 Select id 
 From cachieroperation 
 Where activation_start < GETDATE() AND activation_end > GETDATE() 
       AND last_used+'0:8:0'< GETDATE() 
       AND skipass_number like 'DA3C12DC2186018220%'

Answer 1

    var now = DateTime.Now;

    var query =  from a in cachieroperation 
    where a.activation_start < now && a.activation_end > now 
       && a.last_used < now.AddMinutes(-8) && a.skipass_number.Contains('DA3C12DC2186018220')
    select id

Answer 2

If you want to be sure to use the date in the server, use SqlFunctions.GetDate():

var result = from co in context.CachierOperations
             where co.ActivationStart < SqlFunctions.GetDate() &&
                   co.ActivationEnd > SqlFunctions.GetDate() &&
                   co.LastUsed.AddMinutes(8) < SqlFunctions.GetDate() &&
                   co.SkiPassNumber.Contains("DA3C12DC2186018220")
             select co.Id;