Nullable object must have a value datetime using c# error

Question

I am facing one problem in c# datetime i have trying more than time. it's not giving a problem solution. so give me one solution.

var accommodationcategoryList = EmployeeAttendanceCacheMaster.GetAllEmployeeAttendance();
DataSourceResult result = accommodationcategoryList.ToDataSourceResult(request);

foreach(var item in accommodationcategoryList)
{
    item.User = UserCacheMaster.GetUserById(item.employeeid);
    item.loginTime = item.login.Value.ToShortDateString();
    item.logoutTime = (item.logout.Value.ToShortDateString() != null) ? item.logout.Value.ToShortDateString() : "-";
}

My problem is not showing the logouttime it showing error looks like

nullable object must have a value

Surely you meant to use item.logout.HasValue instead

Hans Passant
– Hans Passant

2016-04-18 11:15:18 +00:00
Commented Apr 18, 2016 at 11:15 — Hans Passant
– Hans Passant, Commented Apr 18, 2016 at 11:15

DoctorMick · Accepted Answer · 2016-04-18 11:14:48Z

6

You're trying to check if a conversion against the null object is null rather than checking the nullable object itself. You need to change this line:

item.logoutTime = (item.logout.Value.ToShortDateString() != null) ? item.logout.Value.ToShortDateString() : "-";

to

item.logoutTime = item.logout.HasValue ? item.logout.Value.ToShortDateString() : "-";

answered Apr 18, 2016 at 11:14

DoctorMick

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Comments

Andry · Accepted Answer · 2019-03-05 06:06:08Z

0

Try this:

if(item.logout.HasValue) {
    item.logoutTime = item.logout.Value;
}

edited Mar 5, 2019 at 6:06

Andry

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answered Mar 5, 2019 at 5:22

Programmer

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