C# IEnumerable Nedir Seçenekler

C# IEnumerable Nedir Seçenekler

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@OlivierJacot-Descombes: Short of using Reflection, there's no way of knowing whether an IList which allows anything of a given type to be stored by index will allow everything of that type to be stored by index.

So when you have to simply iterate through the in-memory collection, use IEnumerable, if you need to do any manipulation with the collection like Dataset and other data sources, use IQueryable

GetEnumerator metodu, bir sınıfa iterasyon bünyelarını kazandıracak özellikleri çitndıran IEnumerator nesnesi dönen bir metotdur.

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.

İlgili bulunak makale tasarm sürecinde farkında olmaksızın yanlışlıkla kırlmış olsa gerek.

Basically it başmaklık a method to get the next item in the collection. It doesn't need the whole collection to be in memory and doesn't know how many items are in it, foreach just keeps getting the next item until it runs out.

So the difference between IQueryable and IEnumerable is about where the filter logic is executed. One executes on the client side and the other executes on the database.

ServyServy 203k2727 gold badges342342 silver badges458458 bronze badges 1 @Jay thanks, just noticed that when re-reading.

The major difference between IQueryable and IEnumerable is that IQueryable executes query with filters whereas IEnumerable executes the query first and then it filters the data based C# IEnumerable Kullanımı on conditions.

Bu soruya sadece kayıtlı kullanıcılar yanıt yazabilirler. Karşılık cızıktırmak ciğerin lütfen giriş örgünız.

Here is a very good article that details the differences between statement lambdas and expression lambdas and discusses the concepts of expression tress in greater depth: Revisiting C# IEnumerable Nerelerde Kullanılıyor C# delegates, expression trees, and lambda statements vs. lambda expressions.."

Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to get records whose EmpId is 2.

JWT Claimlerle çallıkışmamız C# IEnumerable Nerelerde Kullanılıyor nasıl olmalı hocam sözde HttpContextAccessor'u falan devreye sokuyorduk

The most important thing to C# IEnumerable Nedir realize is that, using Linq, the query does C# IEnumerable Nerelerde Kullanılıyor not get evaluated immediately. It is only run birli part of iterating through the resulting IEnumerable in a foreach - that's what all the weird delegates are doing.