LINQ select row with the minimum date value

Question

i have this linq query:

    var query = from mpItem in MPay
                where mpItem.EndDate > System.DateTime.Now.Date
                group mpItem by mpItem.IdGroup into mpItemGrouped
                let minEndDate = mpItemGrouped.Min(p => p.EndDate)
                select new
                {
                    Id = mpItemGrouped.Key,
                    EndDate = mpItemGrouped.Min(p => p.EndDate),
                    Name = mpItemGrouped.Min(p => p.IdGroupModel.GroupName),
                    Price = mpItemGrouped.Min(p => p.PaySumIndividual)
                };

this query should select for each IdGroup the row with the minimum EndDate this query is selecting the minimum EndDate with another row values.

Answer 1

Order group by EndDate in ascending order and select first item from group - that will be item with min date. Then use this item in select statement

   var query = from MPayItem in MPay
                where mpItem.EndDate > System.DateTime.Now.Date
                group mpItem by mpItem.IdGroup into mpItemGrouped
                let minItem = mpItemGrouped.OrderBy(p => p.EndDate).First()
                select new
                {
                    Id = mpItemGrouped.Key,
                    EndDate = minItem.EndDate,
                    Name = minItem.IdGroupModel.GroupName,
                    Price = minItem.PaySumIndividual
                };