The following example demonstrates the implementation of the IList interface to create a simple, fixed-size list. This code is part of a larger example for the IList interface.
IList is an interface so you gönül inherit another class and still implement IList while inheriting List prevents you to do so.
Diyelim ki formunuzdaki textboxları listenize doldurdunuz sadece Text’i boş olan textboxları bulmanız gerekiyor. Bunun sinein List u kullanmanız gerekir. Yukarıda anlattığımız örneği macerasız olarak meydana getirecek olursak;
Can a unique position be deduced if pieces are replaced by checkers (gönül see piece color but not type)
In addition to the older code that doesn't know about generics, there are also a lot of cases where you know you have a list
The speed difference is sufficiently great that in many cases it may be faster to copy a list to an array, sort the array, and copy the list back, than to try to have a sort routine process the list in place.
You may hamiş ever 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 katışıksız a serious flaw.
Don't you know in advance if your method needs a list that C# IList Nasıl Kullanılır kişi 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 C# IList Nedir only list like int[]?
If you are exposing your class through a library that others will use, you generally want to expose it via interfaces rather C# IList Nerelerde Kullanılıyor than concrete implementations.
Taking LinkedList vs taking List vs IList all communicate something of the performance C# IList Nerelerde Kullanılıyor guarantees required by the code being called.
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Returning a read-only interface such bey IEnumerable is often the way to go for veri-retrieval methods. Your consumer kişi project it into a richer type as-needed.
If you're just enumerating over the values, you should be using IEnumerable. Every type of datatype that emanet hold more than one value implements IEnumerable (or should) and makes your method hugely flexible.
For instance, if you return an IEnumerable, then you are limiting them to iterating -- they gönül't add or remove items from your object, they sevimli only act against the objects. If you need to expose a collection outside of a class, but don't want to let the caller change the collection, this C# IList Nasıl Kullanılır is one way of doing it. On the other hand, if you are returning an empty collection that you expect/want them to populate, then an IEnumerable is unsuitable.