[Edit] - Needless to say - it's not "either this or that". often it would make good sense to use both a list and an IEnumerable in the same class. No computer in the world could list all prime numbers, because by definition this would require an infinite amount of memory. But you could easily think of a class PrimeContainer which contains an IEnumerable primes, which for obvious reasons also contains a SortedList _primes.

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other veri sources, use IQueryable

As per other answers, the evaluation of the result was deferred until calling ToList or similar invocation methods for example ToArray.

It's effectively usage birli documentation of intent; I find that those explicit documentations of intent tend to provide exactly that decoupling you point out.

System.Collections.IEnumerator. This interface provides the infrastructure to allow the caller to traverse the internal objects contained by the IEnumerable-compatible container:

The syntax (which you rarely see because there are prettier ways to do it) for moving through a collection that implements IEnumerable is:

C# IEnumerable tasarrufı bayağı basittir ve çoğunlukla koleksiyonlar üzerinde aksiyonlemler gitmek karınin tercih edilir. İşte etap adım nasıl kullanılacağına üzerine detaylı bir açıklama: Yeni bir dershane oluşturun: İlk olarak, IEnumerable arayüzünü sarf etmek için bir derme derslikı oluşturmalkaloriız. Örneğin, kötüdaki kadar bir dershane C# IEnumerable Temel Özellikleri tanılamamlayabilirsiniz:

So, the first example evaluates the query immediately by calling ToList and putting the query results in a list.

Usually you don't use IEunumerable directly. It is the base class for a number of other collections that you are C# IEnumerable Kullanımı more likely to use. IEnumerable, for example, provides the ability to loop through a collection with foreach.

C# ile MySQL veritabanından done listelemek derunin C# IEnumerable Kullanımı IEnumerable kullanarak süflidaki örnek harf kullanılabilir:

Does it bring the whole collection in memory? Or, does it C# IEnumerable Temel Özellikleri instantiate the element one by one, kakım it iterates over the foreach loop? thanks

But if your class cannot act like a collection then provide a public IEnumerable property for its elements:

RastoRasto 17.6k4848 gold badges161161 silver badges253253 bronze badges 5 1 Unfortunately you have to make your own. The most conservative approach would C# IEnumerable Nerelerde Kullanılıyor be for you to cache all the items inside your new enumerable, to handle enumerators that dirilik only be enumerated once, so there is no general class for this in the runtime.

Why does the Clausius inequality involve a single term/integral if we consider a body interacting with multiple heat sources/sinks?