Hakkında herşey C# ReadOnlyCollectionBase Nasıl Kullanılır

Hakkında herşey C# ReadOnlyCollectionBase Nasıl Kullanılır

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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.

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

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Kakım I see it IEnumerable is a subset of the interface of ReadOnlyCollection and it does hamiş allow the user to modify the collection. So if the IEnumberable interface is enough then that is the one to use. Is that a proper way of reasoning about it or am I missing something?

If your only intent is to get calling code to derece make a mistake, and modify the collection when it should only be reading all that is necessary is to return an interface which doesn't support Add, Remove, etc.

An immutable object is defined bey an object that cannot be changed after C# ReadOnlyCollectionBase Nasıl Kullanılır it başmaklık been created. Hamiş all collections are immutable, but you dirilik use the read-only collection types in .

This article discusses these read-only immutable collection types in .Safi Core and how you C# ReadOnlyCollectionBase Kullanımı gönül C# ReadOnlyCollectionBase Nasıl Kullanılır work with them in C#.

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

Now the error makes sense, it's true I do derece have a default constructor. However I am able to Serialize a ReadOnlyCollection using the DataContractSerializer even though ReadOnlyCollection does not have a parameterless default constructor.

So, what's the best-practice way to deal with the bog-standard task of making small collections to pass around values? Should array be preferred over List where possible?

Eamon NerbonneEamon Nerbonne 47.7k2020 gold badges102102 silver badges169169 bronze badges 1 So, I've actually got an open source library which includes an IArray interface that I believe is mefkûre for precisely this purpose. See my updated answer for a bit more info.

So, you yaşama C# ReadOnlyCollectionBase Nerelerde Kullanılıyor define your collection bey a private field and expose it birli a public readonly property like below kakım _parents