c＃中的提醒与当前日期进行比较 [英] reminder in c# compare with current date

问题描述

大家好，



我必须在我的项目中创建一个REMINDER，



场景是：我的项目与化学品库存有关，我必须为即将到期的化学品创建一个提醒。



任何人都可以建议我，怎么可以我创建了一个提醒化学品到期前5天与当前日期/到期日期相比......



问候，

Hi guys,

I have to create one REMINDER in my project,

the scenario is: my project is related to chemical inventory, where i have to create a reminder for the chemicals which are about to expire.

Can anyone plz suggest me, how can i create a reminder for '5days before the expiry of chemical' comparing with current date/expiry date...

Regards,

推荐答案

尝试：

Try:

DateTime expiryDate = new DateTime(2014, 1, 17);
if (DateTime.Now.AddDays(5) >= expiryDate)
    {
    Console.WriteLine("Expired");
    }

你可以这样做（伪代码）：

You may do something like this (pseudo code):

class Chemical
{
  ...
}
...
void ReportExpiredChemicals(int leadTimeInDays, Action<Chemical> report)
{
    var cutoff = Today + leadTimeInDays; // some magic Today property
    DataContext dc = ...                 // some data context that provices that data table for chemicals
    var query = from c in dc.GetTable<Chemical>
                where c.ExpireDate < cutoff
                select c;
    foreach(var c in query) report(c);
}
...
void SendEmailForExpiredChemical(Chemical chemical) { ... }
...
const int twoWeeks = 14; // days;
ReportExpiredChemicals(twoWeeks, SendEmailForExpiredChemical);

干杯

Andi

Cheers
Andi

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