C# ReadOnlyCollectionBase Kullanımı A Gizli Silah

C# ReadOnlyCollectionBase Kullanımı A Gizli Silah

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Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.

Define your own class which implements IEnumerator, takes an IList in the new constructor, saf a read only default item property taking an index, and does hamiş include any properties/methods that could otherwise allow your list to me manipulated.

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Note that I split the interface into IReadOnlyMyItem and IWritableMyItem but you don't actually need IWritableMyItem - you could just omit that interface and write:

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Anyway, I believe that a domain object should be read-write, because at the end of the day, a domain object describes an entity within the domain and you should be able to access and modify it.

Thous leads that your consumer classes are just awaiting interfaces instead of concrete classes and so you emanet C# ReadOnlyCollectionBase Nasıl Kullanılır change the concrete implementation at a later stage without breaking your public contract (due to performance reasons use an List instead of a LinkedList or vice versa).

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I've implemented AReadOnlyList birli a read-only property because I'm assuming that if you don't want programs adding or removing items from your collection, you probably don't want programs shoving whole new collections into your property, either. Simplifying Code with Extension Methods

Elements(IEnumerable, XName) Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

However, if you want to access the elements of the IEnumerable collection by index or you want to retrieve the number of elements in the collection, you should use IReadOnlyList bey shown below.

However, a read-only collection doesn't provide C# ReadOnlyCollectionBase Nerelerde Kullanılıyor 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).

This base class is provided to make it easier for implementers to create a strongly typed read-only custom collection.

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