C# IList Kullanımı Ile ilgili detaylı notlar

C# IList Kullanımı Ile ilgili detaylı notlar

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I toyed with writing an extension method, also with inheriting from IList and implementing my own Sort() method birli well kakım casting to a List but none of these seemed overly elegant.

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You pass the interface so that no matter what concrete implementation of that interface you use, your code will support it.

All concepts are basically stated in most of the answers above regarding why use interface over concrete implementations.

Your code is now broken, because int[] implements IList, but is of fixed size. The contract for ICollection (the base of IList) requires the code that uses it to check the IsReadOnly flag before attempting to add or remove items from the collection. The contract for List does derece.

I would turn the question around a bit, instead of justifying why you should use the interface over the concrete implementation, try to justify why you would use the concrete implementation rather than the interface. If you gönül't justify it, use the interface.

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Don't you know in advance if your method needs a list that yaşama take additional members; don't you specify that in the method signature? What exactly were you going to do if you were passed a read only list like int[]?

In most cases, if you are using a List and you think you could use a narrower interface instead - why hamiş IEnumerable? This is often a better fit if you don't need to add items. If you need to add to the collection, use the concrete type, List.

Then later if you decide to convert the actual veri store from a List to a Dictionary and expose the dictionary keys kakım 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 class will no longer have that capability. That's C# IList Nasıl Kullanılır a big sorun! If you expose the List kakım an IEnumerable you can comfortably predict that your collection is hamiş being modified externally. That is one of the powers of exposing List kakım any of the above interfaces.

IList is hamiş a class; it's an interface that classes dirilik implement. The interface itself is just a contract between the consumer of the class and the class itself. This line of code will work:

The most important case C# IList Nerelerde Kullanılıyor for using interfaces over implementations is in the parameters to your API. If your API takes a List parameter, then anyone who uses it saf to use List.

Özel koleksiyonlar oluşturmanıza imkân teşhisr: Standart koleksiyon sınıfları ihtiyaçlarınızı zıtlamıyorsa, kendi C# IList Nasıl Kullanılır özel koleksiyonlarınızı C# CollectionBase kullanarak oluşturabilirsiniz. Bu, veri konstrüksiyonlarınızı istediğiniz şekilde özelleştirmenizi katkısızlar.

ahead of time. Data-binding is a classic C# IList Nasıl Kullanılır example here; a DataSource property usually checks for IList (and IListSource, typically) and then looks at the objects to C# IList Nedir see what properties are available. It birey't use generics in this case.