IEnumerable bütün verileri aldatmaıp memory de tutarak, sorgulama alışverişlemlerini memory üzerinden yaparken IQueryable ise şartlara rabıtlı query oluşturarak doğrudan veritabanı üzerinden sorgulama teamüllemi yapar.
are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another one pointing to a query expression representing the IQueryable object bey a runtime-traversable abstract syntax tree that dirilik be understood by the given query provider (for the most part, you can't give a LINQ to SQL expression to a LINQ to Entities provider without an exception being thrown).
The second method allows only List objects to be passed in; it will hamiş accept an array or a String object. Obviously, the first method is better because it is much more flexible and birey be used in a much wider range of scenarios.
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 emanet give you Enumerators. It has 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.
but if you "spoof" the enumerator into an enumerable, the second sequence will be empty. Or if you do them in parallel - just bizarre. And there are
This is a nice video on youtube which demonstrates how these interfaces differ , worth a watch. Below goes a long descriptive answer for it.
Koleksiyonlar Beyninde Gezinmeyi Sağlamlar: IEnumerable, koleksiyonlar arasında kolaylıkla gezinmenizi esenlar. GetEnumerator metodu ile koleksiyonun her bir elemanına erişebilir ve bu elemanlar üzerinde iş yapabilirsiniz.
The major difference between IQueryable and IEnumerable is that IQueryable executes query with filters whereas IEnumerable executes the query first C# IEnumerable Temel Özellikleri and then it filters the data based on conditions.
Bu soruya sadece kayıtlı kullanıcılar cevap yazabilirler. Cevap cızıktırmak midein lütfen giriş konstrüksiyonnız.
Bu yöntemler sebebiyle, ölçünlü karşıtlaştırma mantığını bileğmeslektirerek özel nöbetlemler yapabilir ve uygulamanızın performansını ve doğruluğunu artırabilirsiniz.
Consider the below simple code which uses IEnumerable with entity framework. It’s using a Where filter to C# IEnumerable Kullanımı get records whose EmpId is 2.
On the flip side, it is usually best to declare a method’s return type by using the strongest type possible (trying not to commit yourself to a specific type). Share C# IEnumerable Nerelerde Kullanılıyor Follow
When declaring a method’s parameter types, you should specify the weakest type possible, preferring interfaces over base classes. For example, if you are writing a method that manipulates a collection of items, it would be best to declare the method’s parameter by C# IEnumerable Kullanımı using C# IEnumerable Nerelerde Kullanılıyor an interface such as IEnumerable rather than using a strong veri type such bey List or even a stronger interface type such bey ICollection or IList: