C# IEnumerable Nasıl Kullanılır Günlükler

C# IEnumerable Nasıl Kullanılır Günlükler

Blog Article

Botz3000Botz3000 39.4k88 gold badges106106 silver badges128128 bronze badges 1 I believe this is was hamiş asked here so it dirilik be a comment not an answer, but anyway makes sense from refactoring standpoint

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 veri sources, use IQueryable

An IEnumerable is a thing that birey be enumerated...which simply means that it özgü a GetEnumerator method that returns an IEnumerator.

There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable interface is useful when your collection is loaded using LINQ or Entity framework and you want to apply filter on the collection.

System.Collections.IEnumerator. This interface provides the infrastructure to allow the caller to traverse the internal objects contained by the IEnumerable-compatible container:

IEnumerator is a class that enumerates collections. A class that implements IEnumerable returns an IEnumerator. A class that implements IEnumerator başmaklık custom enumeration logic.

IQueryable allows for out-of memory things like a remote veri source, such bey a database or web service.

For small result sets this is likely to be a single trip, for large ones you're sending a request for more rows from the results, but it doesn't re-run the entire query.

Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). Iterator blocks implement the IEnumerable interface like a List or an Array, but C# IEnumerable Nedir they're very special because unlike a List or Array, they often only hold the state for a single item at a time. So if you want C# IEnumerable Nerelerde Kullanılıyor to loop over the lines in a very large file, for example, you emanet write an iterator block to handle the file input.

There are many cases C# IEnumerable Nedir (such bey an infinite list or a very large list) where IEnumerable cannot be transformed to a C# IEnumerable Kullanımı 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".

Then with a IQueryable the generated SQL will contains “where name = “a”, but with a IEnumerable many more roles will be pulled back from the database, then the x.name = “a” check will be done by .Kemiksiz.

Ya sarıklı, onca yazdın çizdin anladıkta iki satır IEnumerable yahut IEnumerator interfacelerini kullanmadın?

On the flip side, it is usually best to declare a method’s return type by using the strongest type possible (trying hamiş to commit yourself to a specific type). Share Follow

You should still avoid declaring the parameter type bey List. Using IList allows the caller to pass arrays and any other objects C# IEnumerable Temel Özellikleri whose type implements IList.