Sum() function in LINQ



Option A:

var result = new {
NetTotal = items.Sum(t => t.net),
GrandTotal = items.Sum(t => t.total)
};
Option B:
var netGrand = items.Sum(t => t.net);
var totalGrand = items.Sum(t => t.total);
Option C:
from p in m.Items
group p by p.Id into g
select new
{
SumTotal = g.Sum(x => x.Total),
SumDone = g.Sum(x => x.Done)
}

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