1.0 KiB
| title | localeTitle |
|---|---|
| First Or Default | أولا أو افتراضي |
FirstOrDefault
إرجاع العنصر الأول الذي يفي بشرط معين اختياري. إذا تم العثور على أي عنصر ، يتم إرجاع default() للكائن
التوقيع
Enumerable.FirstOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)
مثال
`var fruits = new List() { 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.FirstOrDefault(); // Orange
var firstYellowFruit = fruits.FirstOrDefault(f => f.Color == "Green"); // null `