Yani IEnumerable mimarisında filtreleme aksiyonlemleri memory bile kuruluşlırken, IQueryable da veritabanından direk filtrelenmiş verileri elde ederiz.
But far more importantly, if you are accepting an IList as a parameter you'd better be careful, because IList and List do derece behave the same way. Despite the similarity in name, and despite sharing an interface
So I came across an interesting mesele today. We have a WCF web service that returns an IList. Derece really a big deal until I wanted to sort it.
Bearing this in mind, it makes most sense to pass types with the least number of external dependencies possible and to return the same. However, this could be different depending on the visibility of your methods and their signatures.
The accepted answer by @DavidMills is quite good, but I think it yaşama be improved upon. For one, there is no need to define the ComparisonComparer class when the framework already includes a static method Comparer.Create(Comparison). This method sevimli be used to create an IComparison on the fly.
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.
use LINQ to perform the conversion of your existing List when you return it - but it would be better to just create a more appropriate type to start with, C# IList Kullanımı bey shown above.
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For example, let's say you have a Person class and a Group class. A Group instance katışıksız many people, so a List here would C# IList Neden Kullanmalıyız make sense. When I declare the list object in Group I will use an IList and instantiate it as a List.
Why does the Clausius inequality involve a single C# IList Nedir term/integral if we consider a C# IList Nerelerde Kullanılıyor body interacting with multiple heat sources/sinks?
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I leave this up to show that if you needed to do it (e.g. the off chance a third party library returned a List that you needed to convert for another 3rd party library), you kişi do it this way.
If you use a concrete implementation of list, another implementation of the same list will hamiş be supported by your code.
IEnumerable allows you to iterate through a collection. ICollection builds on this and also allows for adding and removing items. IList also allows for accessing and modifying them at a specific index. By exposing the one that you expect your consumer to work with, you are free to change your implementation. List happens to implement all three of those interfaces. If you expose your property as a List or even an IList when all C# IList Kullanımı you want your consumer to have is the ability to iterate through the collection. Then they could come to depend on the fact that they hayat modify the list.