Short story about a kabile living on a fake tropical island / paradise planet, who was actually an adult CEO but didn't remember it
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
Different implementations of collections emanet be enumerable; using IEnumerable makes it clear that what you're interested in is the enumerability, and derece the structure of the underlying implementation of the collection.
Consider that in your code example a new list created. I don't know what is m_states, but if this is a value types collection, you create a clone of the original list. In this way the returning list hayat be manipulated form the caller Add/Remove/Update elements. without
To get them I use VisualTreeHelper class. But I have to consider that there might be A LOT OF children so copying to some array or Collection will by expensive. – drasto 5 mins ago
They usually have a GetXXX method that returns a IEnumerable of whatever type the custom collection class uses so the internal collection güç be iterated around using a foreach loop.
Velhasıl… Yapmış olduğumız bu maslahatlemler neticesinde “Personeller” dershaneımız, içerisinde bir “Personel” done kümesi barındıran ve bu data kümesi üzerinde itere edilebilir bir nitelik yer fail bir sınıf mahiyetindedir.
This way you have possibility to do many things with that query without touching the data (in this case veri in the list). List method takes the prepared query and executes it against the source of data.
Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance input pin on an IC?
Bu alanda veya sair bir alanda, benim ve diğer yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz valörına gelmemektedir.
And that might be useful and more efficient in certain cases. For example, your class might derece hold any collection in memory, but rather iterate over all C# IStructuralComparable Temel Özellikleri files existing in a certain directory, or items in certain DB, or other unmanaged resources. IEnumerable güç step in and do it for you (you could also do it without IEnumerable, but IEnumerable "fits" conceptually, plus it gives you the benefit of being able to use the object produced in a foreach loop).
IEnumerable is an interface that tells us that we can enumerate over a C# IStructuralComparable nedir sequence of T instances. If you need to allow somebody to see and perform some action for each object in a collection, this is adequate.
Önceki C#’ta IEnumerable ve IEnumerator Interfaceleri Nedir? ve Nasıl Kullanılır? çıbanlıklı makalemde IEnumerable ve C# IStructuralComparable Nasıl kullanılır IEnumerator interfaceleri üzerine uzun uzun süjeşmuştuk. Bu derunğimizde ise ilgili interfacelerin asenkron altyapıda şekillendirildiği C# 8.0 ile mevrut yeni C# IStructuralComparable nedir hallerini(IAsyncEnumerable ve IAsyncEnumerator) işşacağız. Şimdi mafevkda adresini verdiğim makalemizide referans alarak mevzuyu en temelden kanalırlayarak ele alalım.
Below mentioned small C# IStructuralComparable Nasıl kullanılır test might help you understand one aspect of difference between IQueryable and IEnumerable. I've reproduced this answer from this post where I was trying to add corrections to someone else's post