Search for a object list for a object with a minimum value and add that object with new value to a list

Question

I have a class like this

         class car   
           {
             public string carName { get; set; }
             public decimal price { get; set; }//Group id
           }

         I have two lists like this

         List<car> listCars = new List<car>();
         List<car> lowest = new List<car>();

I want to search for the car with lowest price in the listCars list and add the lowest price car object to the list lowest.

      var minPrice = lstCars.Min(carobj=>carobj.price);

but in this you get only the minimum car price only. I want to get the car object and add it to the lowest list. How to do that?

price is of type `string`. Is that a typo ? – Habib Jul 03 '14 at 13:08 — Habib, Jul 03 '14 at 13:08
@Habib yeah, sorry about that. – user3572467 Jul 03 '14 at 13:11 — user3572467, Jul 03 '14 at 13:11

Selman Genç · Accepted Answer · 2014-07-03T13:10:47.657

2

You can sort your cars based on Price in ascending order, then get the first car which has the lowest price:

lowest.Add(listCars.OrderBy(car => car.price).First());

You can also use MinBy method, it would be more efficient for bigger lists because ordering is expensive.

edited Jul 03 '14 at 13:10

answered Jul 03 '14 at 13:04

Selman Genç

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thanks for the advice about changing the data type. I changed and thank you – user3572467 Jul 03 '14 at 13:10

score 1 · Answer 2 · answered Jul 03 '14 at 13:06

1

Multiple ways of doing it. You can use OrderBy and then select First or you can use your already deteremined minPrice like:

var minPrice = lstCars.Min(carobj=>carobj.price);
lowest.Add(listCars.FirstOrDefault(r=> r.price == minPrice));

answered Jul 03 '14 at 13:06

Habib

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score 0 · Answer 3 · answered Jul 03 '14 at 13:07

Lowest price which is string? Is this a price, then i would use decimal. If you also want to add all cars with the lowest price:

var minPriceGroup = listCars
    .Select(c => new { Car = c, Price = decimal.Parse(c.price) })
    .OrderBy(x => x.Price)
    .GroupBy(x => x.Price)
    .First();
lowest.AddRange(minPriceGroup.Select(x => x.Car));

Search for a object list for a object with a minimum value and add that object with new value to a list

3 Answers3