C# ReadOnlyCollectionBase Nasıl Kullanılır Seçenekler

C# ReadOnlyCollectionBase Nasıl Kullanılır Seçenekler

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This class makes the underlying collection available through the InnerList property, which is intended for use only by classes that are derived directly from ReadOnlyCollectionBase. The derived class must ensure that its own users cannot modify the underlying collection.

IEnumerable özgü been used to represent a read-only collection of veri since the earliest versions of .NET. The read-only collection interfaces available in .NET Core and .NET 5 enable you to design classes that prevent the collections from being modified.

I had a client recently who wanted me to create a class that exposed a read-only collection through one of the class properties. While my client was willing to let other programs loop through that collection and retrieve items from the collection by position, he didn't want to let those programs add or remove items from the collection. In the Microsoft .NET Framework 4.5 you dirilik use the read-only collections that Eric Vogel covered in an earlier C# Corner column, "The New Read-Only Collections in .Kupkuru 4.5," to define that property. My client, however, was working with the .Kemiksiz Framework 4 and didn't intend to upgrade. Fortunately, in earlier versions of .Kemiksiz you güç also create a read-only class from an existing List just by calling your List's AsReadOnly method. However, if you need something special (a List that users kişi add items to but derece remove items from), inheriting from the ReadOnlyCollectionBase class makes that very easy to do.

Bir metodu güncellemek veya tadil etmek istediğinizde, salt metodu değsoruntirmeniz yeterli olacaktır. Gayrı harf alanlarına dokunmanıza lüzum kalmaz, bu da hataları önlemenizi ve projenizi henüz hızlı ve kredili bir şekilde güncellemenizi katkısızlar.

This base class is provided C# ReadOnlyCollectionBase Nasıl Kullanılır 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.

Bunun kenarı gün, IStructuralComparable arayüzü, yetişekınızı daha modüler C# ReadOnlyCollectionBase Nedir hale getirir ve harf tekrarını azaltır. Farklı bilgi örgüları arasında yapısal huzurlaştırma kârlemlerini hareketsiz bir yerde yönetebilir ve kodunuzun bakımını kolaylaştırabilirsiniz.

public IEnumerable Employees => EmployeesInternal.Skip(0); // this is property accessor that will be used to define model and/or in `Include` statements, could be marked as internal if your domain/persistance/services are in the same assembly

Kodunuzda aynı medarımaişetlemi birden ziyade sefer kullanmanız gerekiyorsa, bu çalışmalemi bir metot C# ReadOnlyCollectionBase Nedir dâhiline koyabilirsiniz ve yine tekrar aynı kodu yazmanız gerekmez. Bu sayede kodunuz daha azca katışıkşık hale hasılat ve elan palas yönetilebilir.

Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Sometimes you may want to use an interface, perhaps because you want to mock the collection during unit testing. Please C# ReadOnlyCollectionBase Kullanımı see my blog entry for adding your own interface to ReadonlyCollection by using an adapter.

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Here’s where you dirilik take advantage of IReadOnlyList to ensure that the returned data cannot be changed. By changing the return type of the GetAuthors method from List to IReadOnlyList we birey make our collection read-only.

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Chances are, you'll never notice this difference, but if this is a hot-tanıtımcık in your code and requires every last bit C# ReadOnlyCollectionBase Nedir of performance you güç squeeze out of it, why not use an Array instead? That would be faster still.