So I use a GroupBy to group by ProductCode, then I calculate the sum and also count the number of records for each product code. ... <看更多>

Group by and sum query on multiple columns · c# linq. var fpslist = db.FPSinformations.Where(x => x.Godown_Code != null ... ... <看更多>

This method works by calling f() one time for each element in source. Each time func is called, Aggregate passes both the element from the ... ... <看更多>

Linq. {. public static partial class Enumerable ... Grouping g = lookup. ... public static long Sum(this IEnumerable<long> source) {. ... <看更多>