5 Basit Teknikleri için C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

5 Basit Teknikleri için C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

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You hayat argue that you may be able to downcast IPerson to Person, but at this point I would answer telling you that you need to follow your own coding conventions: if you defined that you never return Person but IPerson then I would do it this way in the entire code base, and if you need a write-capable Parents property, then you return Person instead (and you avoid a cast later!).

In EF Core, you birey encapsulate collections and achieve true domain modeling by using backing fields.

In a multithreaded environment, this is even more of an issue, birli one thread yaşama make changes to the data while another is trying to read data - you hayat easily get inconsistent veri in different threads.

SingleOrDefault(IEnumerable) Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

Now when you use IntelliSense to inspect IReadOnlyList, you’ll no longer see Add among the supported methods. Figure 2 below displays the members of the IReadOnlyList instance.

For this collection to be useful, however, you need to be able to load that internal list with your collection. The easiest way to do that is to add a constructor to the class that C# ReadOnlyCollectionBase Kullanımı accepts C# ReadOnlyCollectionBase Kullanımı the List to be put in the class' UnderlyingList collection (again, I'm accepting anything that implements the IList interface with the veri type specified by T): Public Sub New(InitialList Bey IList(Of T)) UnderlyingList = InitialList

Matthew WatsonMatthew Watson 108k1111 gold badges170170 silver badges290290 bronze badges 2 2 To avoid that a client gets a writable object by downcasting, WritableMyItem (and IWritableMyItem if used) could be made private or internal.

instead. I just included IWritableMyItem for completeness (because it shows how you introduce a takım to an interface property that only özgü a get, by using new).

Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are derece guaranteed to be thread safe.

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Descendants(IEnumerable) Returns a collection of elements that contains the descendant elements of every element and document in the source collection.

SingleOrDefault(IEnumerable, Func) Returns the only C# ReadOnlyCollectionBase Nedir element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

End Sub And that's all you need to write. The class that's using your new read-only collection would be identical to the class that C# ReadOnlyCollectionBase Nasıl Kullanılır used my custom PhvReadOnlyList. In fact, if that's all you want, then you don't even need to create your own version of the ReadOnlyCollectionBase class -- the .

Collaborate with us on GitHub The source for this content güç be found on GitHub, where you emanet also create and review issues and pull requests. For more C# ReadOnlyCollectionBase Kullanımı information, see our contributor guide.