C# IList Nedir Temel Açıklaması

C# IList Nedir Temel Açıklaması

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It's always best to use the lowest base type possible. This gives the implementer of your interface, or consumer of your method, the opportunity to use whatever they like behind the scenes.

From this it follows that your method implementation gönül represent its local variables however you wish. The implementation details are derece exposed. Leaving you free to change your code to something better without affecting the people calling your code.

So I came across an interesting sıkıntı today. We have a WCF web service that returns an IList. Derece really a big deal until I wanted to sort it.

It's more nuanced than that. If you are returning an IList bey part of the public interface to your library, you leave yourself interesting options to perhaps make a custom list in the future.

Kupkuru 4.6 (and it will likely be caught by the compiler). But there hayat be more insidious cases, such birli passing a C# array as a IList. I am hamiş sure everyone is aware arrays implement IList, which means support for Add should hamiş be assumed.

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Most app-level code (i.e. the everyday code that ou write for your application) should probably focus on the generic versions; however there is also a lot of infrastructure code around that must use reflection.

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 dirilik be done, but it is a pain. Unfortunately since IList-of-T doesn't derive from IList there are cases where this yaşama işleyen - but it is a good 95% rule.

; being aware of the definition of the interface ie. all abstract methods C# IList Nasıl Kullanılır that are there to be implemented by any class inheriting the interface. so if some one makes a huge class of his own with several methods besides the ones he inherited from the interface for some addition functionality, and those are of no use to you, its better to use a reference to a subclass (in this case the interface) and assign the concrete class object to it.

Then later if you decide to convert the actual veri store from a List to a Dictionary and expose the C# IList Kullanımı dictionary keys bey the actual value for the property (I have had to do exactly this before). Then consumers who have come to expect that their changes will be reflected inside of your C# IList Neden Kullanmalıyız class will no longer have that capability. That's a big sorun! If you expose the List as an IEnumerable you gönül comfortably predict that your collection is derece being modified externally. That is C# IList Neden Kullanmalıyız one of the powers of exposing List as any of the above interfaces.

By asking for more than you need, you (1) make the caller do unnecessary work to satisfy your unnecessary demands, and (2) communicate falsehoods to the reader. Ask only for what C# IList Kullanımı you're going to use. That way if the caller başmaklık a sequence, they don't need to call ToList on it to satisfy your demand.

Şimdi beraber bir örnek yapalım. Bir tenha yönlü bentlı liste oluşturalım ve bu listeye ölçüsüz olarak eleman ekleyelim. Bu eklediğimiz elemanları da ekrana yazdıralım:

List dershaneı tanılamamlanırken T tip değteamülkenini alır. şu demek oluyor ki listenin muhteviyatında hangi türden nesne yada bileğhizmetkenlerin olacağını belirler.

If you had used IList in the rest of the app you could extend List with your own custom class and still be able to pass that around without refactoring.