Question

Morning i would like to know how to do this bit of (MS) SQL in LINQ…

 SELECT CONVERT(CHAR(10),orderDate,110)  AS OrderDate, 
 SUM(1) AS TotalOrders 
 FROM Orders
 WHERE OrderDate>getdate()-30
 GROUP BY CONVERT(CHAR(10),orderDate,110)
 ORDER BY OrderDate DESC

Many thanks in advance.

UPDATE
I ended using and edited version of the solutions provided below, thought i would share it…

 using (DataDataContext dc = new DataDataContext())
        {
            var query = from o in dc.Orders
                        where o.orderDate > DateTime.Now.AddDays(-30)
                        let dt = o.orderDate
                        group o by new DateTime(dt.Year, dt.Month, dt.Day) into g
                        select new OrderCounts
                        {
                            OrderDate = String.Format("{0:d}", g.Key.Date),
                            TotalOrders = g.Count()
                        };

            query.GroupBy(o => o.OrderDate);
            query.OrderBy(o => o.OrderDate);

            return query.ToList();
        }

Answer 1

var result =(from s in Orders
             where s.OrderDate > DateTime.Now.AddDays(-30)
             group s by new { date = s.OrderDate.ToString() } into g
             // or use ((DateTime)s.OrderDate).ToShortDateString() instead of s.OrderDate.ToString()
             select new
             {
                  OrderDate = g.Key.date,
                  TotalOrders = g.Count()
             }).OrderByDescending(x=>x.OrderDate);;