En C# IEnumerable Nedir Sırları

En C# IEnumerable Nedir Sırları

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The difference between IQueryable and IEnumerable is centered around this point. IQueryable builds expression trees whereas IEnumerable does derece, at least not in general terms for those of us who don't work in the secret labs of Microsoft.

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This where filter is executed on the client side where the IEnumerable code is. In other words all the data is fetched from the database and then at the client its scans and gets the record with EmpId is 2.

The following code example demonstrates the best practice for iterating a custom collection by implementing the IEnumerable and IEnumerator interfaces. In this example, members of these interfaces are not explicitly called, but they are implemented to support the use of foreach (For Each in Visual Basic) to iterate through the collection.

I have writen about custom IEnumerator. Whats the simplest way to make IEnumerable from it ? ülküsel solution (one line of code) would be if there was some class for that purpose. Or do I have to C# IEnumerable Nerelerde Kullanılıyor create my own ?

So if you working with only in-memory veri collection IEnumerable is a good choice but if you want to query veri collection which is connected with database `IQueryable is a better choice birli it reduces network traffic and uses the power of SQL language.

This is a birçok video on youtube which demonstrates how these interfaces differ , worth a watch. Below goes a long descriptive answer for it.

the IEnumerable interface, so anything you güç do C# IEnumerable Nasıl Kullanılır with a "plain" IEnumerable, you yaşama also do with an IQueryable. IEnumerable just başmaklık a GetEnumerator() method that returns an Enumerator for which you sevimli call its MoveNext() method to iterate C# IEnumerable Temel Özellikleri through a sequence of T

Yield ile kendimiz named iteretor'ler oluşturabiliriz. Örneğin yetişekımızın 750TL den elan pahalı ürünleri getirmesini istiyoruz:

In a yetişek, it may C# IEnumerable Kullanımı be better to defer converting your query to a list until the very end, so if I'm going to enumerate through Leopards and C# IEnumerable Nedir Hyenas more than once, I'd do this:

Hordaki sınıfta yaptıklarımızı adım aşama anlatmadan önce şayet bir sınıfa IEnumerator implemente edilirse ne metotların implement olacağına değinmek isterim. Düzenlediğim haliyle bayağıdaki şifre yapkaloriı inceleyelim;

something is up with your image link, its not rendering in the post body for some reason codeproject.com/KB/cs/646361/WhatHowWhere.jpg

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In addition to all the answers posted above, here is my two cents. There are many other types other than List that implements IEnumerable such ICollection, ArrayList etc.