C# ReadOnlyCollectionBase Nasıl Kullanılır Aptallar için

C# ReadOnlyCollectionBase Nasıl Kullanılır Aptallar için

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With this type from System.Collections.ObjectModel, we provide a collection of elements that cannot be changed. But it may be possible to change some elements themselves.

Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did hamiş use it birli the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.

Kişi you arrange 25 whole numbers (not necessarily all different) so that the sum of any three successive terms is even but the sum of all 25 is odd?

Objects everywhere), and it makes the construction wordier (gönül't use .ToList or collection initializers). And it doesn't really communicate intent either: such a list suggests you could add/remove values, or change them: but that's hamiş typical usage at all.

This base class is provided to make it easier for implementers to create a generic read-only custom collection. Implementers are encouraged to extend this base class instead of creating their own.

Let’s explore an example of using IReadOnlyList in place of List in order to make our list read-only. Consider the following class:

4) If you suddenly realise that your collection of choice is inefficient, you yaşama change the underlying collection type without having to go and change all the places where it got passed bey a parameter (kişi you imagine the trouble you might have with, say, List?)

Bu, yazılımınızın daha bir araba özelliğe ehil olmasını sağlamlar ve kullanıcı dostu bir deneyim sunar. üste, C# dilinde birhayli amade metot da bulunmaktadır ve bunları kullanarak projenizi elan hızlı C# ReadOnlyCollectionBase Nasıl Kullanılır ve güçlü bir şekilde vüruttirebilirsiniz.

C# Queue derslikı kullanımı enikonu basittir ve çeşitli C# ReadOnlyCollectionBase Nedir adımları muhtevaerir. Bu adımları sağlıklı bir şekilde kovuşturulma ederek, Queue klasını verimli bir şekilde kullanabilirsiniz. İşte temel adımlar ve detayları:

So when i have this piece of code what is the easiest or best way to make it a read only collection?

One possibility is to implement your own thread-safe variant of the ReadOnlyCollection to allow locked access, though this will be C# ReadOnlyCollectionBase Kullanımı non-trivial and non-performant if you want to support IEnumerable, and it still

However, a read-only collection doesn't provide Add and Remove methods for changing which items are in the collection, though the items themselves may be updateable (it's the responsibility of the items in the collection to protect themselves from changes).

For C# ReadOnlyCollectionBase Nerelerde Kullanılıyor maximum flexibility, my class doesn't specify the data type of the List in which it keeps its actual data. Instead, I declare my UnderlyingList variable to use any class that implements the IList interface. I've also made this a generic class: Rather than specify what kind of List I'm working with, I've forced my class to be instantiated with a veri type that the code refers to as T. Wherever in my code I need to specify my List's data type, I just use the T reference. Finally, I've chosen to have this class implement the generic version of IEnumerable, which requires two versions of the GetEnumerator method -- but the code is identical in both versions of the method. Listing 1. The basics of the PhvReadOnlyList class.

In the class that exposes a read-only property based on PhvReadOnlyList, you still C# ReadOnlyCollectionBase Kullanımı need an ordinary List, with its Add and Remove methods, so that your class güç put items in the List both before and after creating a PhvReadOnlyList from it.