[英]How do i return 0 as decimal value as default if there are not data in linq query?
workedHours = db.WorkedHours.
Where(wh => wh.EmployeeId == ID).
Sum(h => h.DayHours)
查询的这一部分可能有或没有数据,并且
db.WorkedHours.Where(wh => wh.EmployeeId == ID)
我正在尝试Sum
。如果没有数据要做求和,如何返回0?
var sum = db.WorkedHours
.Where(wh => wh.EmployeeId == ID)
.Select(h => h.DayHours)
.DefaultIfEmpty(0)
.Sum();
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