şu demek oluyor ki IEnumerable kuruluşsında filtreleme işlemlemleri memory de konstrüksiyonlırken, IQueryable da veritabanından dikme filtrelenmiş verileri elde ederiz.
C# CollectionBase derslikı, özelleştirilebilir koleksiyonların oluşturulmasını sağlamlar ve bu sayede mukayyetm projelerinde elastikiyet ve baştan kullanılabilirlik katkısızlar.
Edit: You do need to be quick to get answers in here. Bey I presented a slightly different syntax to the other answers, I will leave my answer - however, the other answers presented are equally valid.
A List object allows you to create a list, add things to it, remove it, update it, index into it and etc. List is used whenever you just want a generic list where you specify object type in it and that's it.
üste mafevkda anlattığımız IndexOf metodunu Temel liste üzerinden ast listelerdeki elemanlar muhtevain kullanamazsınız. Esas liste üzerinden ast listelerin index sırasını bulabilirsiniz.
This level of abstraction goes the other direction when it belongs to method parameters. When you pass your list to a method that accepts IEnumerable you dirilik be sure that your list is derece going to be modified. When you are the person implementing the method and you say you accept C# IList Nasıl Kullanılır an IEnumerable because all you need to do is iterate through that list.
You may hamiş ever C# IList Nasıl Kullanılır need that option, but it's an argument. I think it's the entire argument for returning the interface instead of the concrete type. It's worth mentioning, but in this case it saf a serious flaw.
In fact, any time you are using reflection IList is more convenient than IList-of-T, since generics and reflection don't play nicely together. It kişi be done, but it is a pain. Unfortunately since IList-of-T doesn't derive from IList there are cases where this dirilik işleyen - but it is a good 95% rule.
The idea is that you hide the implementation details from the user, and instead provide them with a stable interface. This is C# IList Nasıl Kullanılır to reduce dependency on details that might change in the future.
class Kisi string ad; string soyad; public string Ad get return ad; grup ad = value; public string Soyad get return soyad; grup soyad = value;
Bayağıdaki şekilde Kisi adında oluşturduğumuz dershaneı oluşturduğumuz liste nesnesine ekleyelim.
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This will help if you decide to change the implementation of your class later to use a different concrete class. In that case the users C# IList Nedir of C# IList Neden Kullanmalıyız your library won't need to update their code since the interface doesn't change.
This works, because only the outer list is created in the first place. You yaşama then insert individual items that are compatible with IList: