994 B
994 B
title | localeTitle |
---|---|
First | primero |
primero
Devuelve el primer elemento que satisface una condición dada opcional. Si no se encuentra ningún elemento, lanza una InvalidOperationException
;
Firma
Enumerable.First<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)
Ejemplo
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 firstFruit = fruits.First(); // Orange
var firstYellowFruit = fruits.First(f => f.Color == "Yellow"); // Pineapple