将DateTime设置为11:59:59 PM

Question

We have an app which let's users get data between two dates. These dates are in a Date control and if the user wants to select data for one day they would enter in the same day in both controls.

This will cause an issue because the .Value of these controls is set to midnight, 12:00 AM . So it will attempt to look for data between 12:00 AM and 12:00 AM of the same day.

For example,

DateTime start = fromDate.Value; // 09-07-2018 12:00 AM
DateTime end = toDate.Value; // 09-07-2018 12:00 AM

Later on, we will call the database where start is :start and end is :end .

SELECT * FROM Table WHERE Date BETWEEN :start AND :end;

This query will return nothing as nothing is between midnight and midnight.

How do we set the end to 23:59:59 or 11:59:59 PM ?

Answer 1

You should just use

DateTime end = toDate.Value.AddDays(1);

This will give you midnight of the next day, so anything less than this is the prior day.

Answer 2

您需要使用下一个代码：

DateTime end = toDate.Value.AddDays(1).AddSeconds(-1);