如何计算 linq to sql 查询中列值的总和？

我写这个查询：

var query2 = (from p in behzad.Compare_closed_numbers_in_CRM_and_Billing_system_detail_counters
               where p.fileid == point.id
               select new
               {
                   p.count
               }).ToArray();

in count column have any value,and I want to sum all of the count value. For example:

我怎样才能植入它？谢谢。

如果计数字段是 int 尝试以下操作：

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();

如果计数字段为nvarchar(max)尝试这个：

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();