IEnumerable tüm verileri kırmızııp memory bile sara, sorgulama emeklemlerini memory üzerinden yaparken IQueryable ise şartlara demetlı query oluşturarak doğrudan veritabanı üzerinden sorgulama teamüllemi yapar.
Anything in .Safi that you can iterate over implements IEnumerable. If you're building your own class, and it doesn't already inherit from a class that implements IEnumerable, you gönül make your class usable in foreach statements by implementing IEnumerable (and by creating an enumerator class that its new GetEnumerator method will return).
I changed the names of my original objects so that this looks like a more generic example. The query itself is derece that important. What I want to ask is this:
A. We iterate the list in different way, foreach yaşama be used for IEnumerable and while loop for IEnumerator.
An IEnumerator is a thing that birey enumerate: it katışıksız the Current property and the MoveNext and Reset methods (which in .Kemiksiz code you probably won't call explicitly, though you could).
B. IEnumerator hayat remember the current index when we pass from one method to another (it start working with current index) but IEnumerable can't remember the index and it reset the C# IEnumerable Temel Özellikleri index to beginning. More in this videoteyp
So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes on the client side and the other executes on the database.
ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just noticed that when re-reading.
Yield ile C# IEnumerable Temel Özellikleri kendimiz named iteretor'ler oluşturabiliriz. Örneğin izlenceımızın 750TL den daha pahalı ürünleri getirmesini istiyoruz:
Marc GravellMarc Gravell 1.0m271271 gold badges2.6k2.6k silver badges2.9k2.9k bronze badges 1 1 The C# IEnumerable Nasıl Kullanılır mistake with "Reset" was with just having one type of enumerable. IMHO, there should have been an IMultipassEnumerable, inheriting IEnumerable, which would support Reset C# IEnumerable Nasıl Kullanılır and guarantee that multiple passes will either return identical veri or throw an exception; an ordinary IEnumerable whose collection was modified should be allowed C# IEnumerable Temel Özellikleri to return 'sensible' data if it's able to do so or throw an exception if it emanet't, and an ISafeEnumerable, which would be expected to work sensibly (without throwing an exception) even if a collection changes. A bit late now to change things, though.
What US checks and balances prevent the FBI from raiding politicians unfavorable to the federal government?
Umarım bu kırdan sonrasında iki tipin illet, nerede ve nasıl kullanılması gerektiğine üstüne yeterli bilgiye ehil olmuşsunuzdur.
If the collection supports indexers, you could also iterate over it with the classic for loop method but the Iterator pattern provides some birçok extras like the ability to add synchronization for threading.
In addition to all the answers posted above, here is my two cents. There are many other types other than List that implements IEnumerable such ICollection, ArrayList etc.