How can I calculate sum of column value in linq to sql query?

Question

I\'m write this query:

var query2 = (from p in behzad.Compare_closed_numbers_in_CRM_and_Billing_system_detail_counters
               where p.fileid == point         


        

Answer 1

If count field is int try this:

int sum = behzad.Compare_closed_numbers_in_CRM_and_Billing_system_detail_counters
     .Where(t=>t.fileid == point.id)
     .Select(t => t.Count ?? 0).Sum();

If count field is nvarchar(max) try this:

int sum = behzad.Compare_closed_numbers_in_CRM_and_Billing_system_detail_counters
         .Where(t=>t.fileid == point.id)
         .Select(t => Convert.ToInt32(t.Count)).Sum();