C# ReadOnlyCollectionBase Kullanımı Ile ilgili detaylı notlar

C# ReadOnlyCollectionBase Kullanımı Ile ilgili detaylı notlar

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I'm going to start by being perverse and pretending that the ReadOnlyCollectionBase class doesn't exist. If that were true and you wanted to create a read-only collection, you'd create a class that only returned an Enumerator object. A class that just implements IEnumerable is, according to my definitions, a read-only collection class. Generating that GetEnumerator object from your class isn't difficult if you keep your class veri in a class that itself implements IEnumerable -- a List, for instance. If you do keep your data in a List, then you hayat use the List GetEnumerator method to retrieve an Enumerator object, which you birey then return to the yetişek using your class. Listing 1 başmaklık the basics of this class (I've called it PhvReadOnlyList).

 

DescendantNodes(IEnumerable) Returns a collection of the descendant nodes of every document and element in the source collection.

Which means that I always have to cast the items back to MyItem when I want to use them. Also the items can be casted into MyItem outside the class.

Ancestors(IEnumerable, XName) Returns a filtered collection of elements that contains the ancestors of every node C# ReadOnlyCollectionBase Kullanımı in the source collection. Only elements that have a matching XName are included in the collection.

Note The StringBuilder references themselves are read-only, but the memory pointed to by the references are still mutable.

Çhileışma bir C# ReadOnlyCollectionBase Nerelerde Kullanılıyor zamanlar sadece constructor içinde haysiyet ataması binalabilmektedir. Suratsız halde salt okunur bir alana mesabe atanamaz uyarısı vermektedir. Readonly değişebilir teşhismı zirdaki gibidir.

HashTable hash kodlarına C# ReadOnlyCollectionBase Nerelerde Kullanılıyor bakılırsa dizdiğinden belli başlı bir sıralaması yoktur.Algoritması bu kodların süresince gizlidr. Dictionary ise verilerin ekleniş sırasını hiç değmaslahattirmeden saklamıştır.

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

jasonjason 240k3535 gold badges431431 silver badges529529 bronze badges 2 Really, IEnumerable saf the same issue birli IList in principle, but implementing a single extra method (and a single extra property on the enumerator) was not considered a burden, compared to the dozens you would need for IList (which List and indeed ReadOnlyCollection do implement, separately from their generic collection interfaces)

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

However, to be doubly sure, I'd like to return the collection birli read-only, so that the calling code is C# ReadOnlyCollectionBase Kullanımı unable to make changes to the collection, only view what's already there. Is this at all possible?

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I don't know if there is any way of protecting non-atomic elements without cloning them before placing them in the read only list. Share Improve this answer Follow