Question

I’m trying to do a query to generate packing slips, and need general order info, as well as how many items the order contains.

Here’s my basic query:

var orders = (from cert in _orderRepository.GetAll()
                           where !cert.PrintedPackSlip
                           orderby cert.CardNumber
                           //group cert by cert.CardNumber
                           //into certGrp
                           select cert);

What I need to do is group by CardNumber and do a count of how many orders have that card number.

I would ideally it to come out like a Dictionary if at all possible

Answer 1

If I’ve correctly understood, for each order you want to list the total number of orders for that card number, in which case the following should work:

        var orders = (from cert in _orderRepository.GetAll()
                      join cert2 in _orderRepository.GetAll()
                      on cert.CardNumber equals cert2.CardNumber
                      where !cert.PrintedPackSlip 
                      where !cert2.PrintedPackSlip
                      group cert by cert
                      into certGrp
                      select certGrp).ToDictionary(o => o.Key,o => o.Count())