Question

I have a table the contains appointments. These appointments have different statuses (byte from 1 to 5) and dates; the column for the date is simply called AppointDate. I pass in a list of IDs and I want to group the result based on the status AND whether the date of the appointment is past or not.

TheIDs is a list of longs that’s passed in as the parameter. This is what I have so far:

var TheCounterInDB = (from a in MyDC.Appointments
                      where TheIDs.Contains(a.ID)
                      group a by a.AppointStatus into TheGroups
                      select new { 
                             TheStatus = TheGroups.Key,
                             TheTotalCount = TheGroups.Count(),
                             TheLateCount = ?,
                             ThePendingCount = ?
                      }).ToList();

Basically, I want TheLateCount to be the count of all the appointments where status is 1 AND the date is past and ThePendingCount to be the count where status is 1 AND the date is not past. My anonymous type is good to return the count of all the different statuses (that’s where the .Key is) but I’m wondering how to best add the date requirement into the grouping.

Thanks for your suggestions.

Answer 1

var TheCounterInDB = (from a in MyDC.Appointments
                      where TheIDs.Contains(a.ID)
                      group a by a.AppointStatus into TheGroups
                      select new { 
                             TheStatus = TheGroups.Key,
                             TheTotalCount = TheGroups.Count(),
                             TheLateCount = TheGroups.Count(x => x.AppointStatus == 1 && x.AppointDate < DateTime.Today),
                             ThePendingCount = TheGroups.Count(x => x.AppointStatus == 1 && x.AppointDate >= DateTime.Today)
                      }).ToList();