freeCodeCamp/guide/english/csharp/linq/select/index.md

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Select

Select

Projects data from the data set.

Signature

Enumerable.Select<TSource, TResult> Method (IEnumerable<TSource>, Func<TSource, TResult>)

Example

var fruits = new List<Fruit>() {
    new Fruit() { Id = 1, Name = "Orange",     Color = "Orange", Quantity = 3   },
    new Fruit() { Id = 2, Name = "Strawberry", Color = "Red",    Quantity = 12  },
    new Fruit() { Id = 3, Name = "Grape",      Color = "Purple", Quantity = 25  },
    new Fruit() { Id = 4, Name = "Pineapple",  Color = "Yellow", Quantity = 1   },
    new Fruit() { Id = 5, Name = "Apple",      Color = "Red",    Quantity =  5   },
    new Fruit() { Id = 6, Name = "Mango",      Color = "Yellow", Quantity = 2   }
};

var mangoQnt = fruits.Where(f => f.Name == "Mango").Select(f => f.Quantity).FirstOrDefault(); // 2

var grapeColor = fruits.Where(f => f.Name == "Grape").Select(f => f.Color).FirstOrDefault(); // Purple