, and the database only returns the rows that are relevant. But if we had returned a List from AllSpotted(), then it may run slower because the database could return far more data than is actually needed, and we waste cycles doing the filtering in the client.
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An IEnumerable is a thing that güç be enumerated...which simply means that it özgü a GetEnumerator method that returns an IEnumerator.
Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memory.
An Enumerable is a class that yaşama give you Enumerators. It katışıksız a method called GetEnumerator which gives you an Enumerator that looks at its items. When you write a foreach loop in C#, the code that it generates calls GetEnumerator to create the Enumerator used by the loop.
So if you working with only in-memory veri collection IEnumerable is a good choice but if you want to query data collection which is connected with database `IQueryable C# IEnumerable Nedir is a better choice as it reduces network traffic and uses the power of SQL language.
List: List klası, dinamik boyutlarda sıralı koleksiyonlar bağırsakin C# IEnumerable Kullanımı kullanılır ve bu tür koleksiyonlarda elemanları gezinmek bâtınin IEnumerator tasarrufı yaygındır.
ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just C# IEnumerable Kullanımı noticed that when re-reading.
IQueryable ise öncelikle nişaneğimiz koşula gereğince bir sorgu uygulayıp bunula database’e gidiyor muktezi verileri aldıktan sonrasında bizlere dkatüş sağlamlıyor.
There are many cases (such kakım an infinite list or a very large list) where IEnumerable cannot be transformed to a List. The most obvious examples are all the prime numbers, all the users of facebook with their details, or all the items on ebay. The difference is that "List" objects are stored "right here and right now", whereas "IEnumerable" objects work "just one at a time".
Does it bring the whole collection in memory? Or, does it instantiate the element one by one, birli it iterates over the foreach C# IEnumerable Nasıl Kullanılır loop? thanks
IEnumerable enable implicit reference conversion for array types which known bey Covariance. Consider the following example:
IQueryable is faster than IEnumerable if we are dealing with huge amounts of data from database because,IQueryable gets only required veri from database where birli IEnumerable gets all the data regardless C# IEnumerable Nerelerde Kullanılıyor of the necessity from the database
IEnumerable tipi veriyi önce belleğe atıp ardından bellekteki bu bilgi üzerinden belirtilen koşulları çhileıştırır ve veriye uygular.