5 Basit Teknikleri için C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

5 Basit Teknikleri için C# ReadOnlyCollectionBase Nerelerde Kullanılıyor

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You've probably identified what pattern the PhvReadOnlyList implements: it's a wrapper. In the .Kupkuru Framework 4.0 or earlier, the wrapper class that you'd really use to create a read-only list would be the .Safi ReadOnlyCollectionBase class. As with my example, you use the ReadOnlyCollectionBase class to create your own class with whatever functionality you need -- but you don't need to write the GetEnumerator method or create your own UnderlyingList because the ReadOnlyCollectionBase handles both.

I agree. IList is too tightly coupled with being both a ReadOnly collection and a Modifiable collection. IList should have inherited from an IReadOnlyList.

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

Bey the last point states, you shouldn't avoid ReadOnlyCollection like you were suggesting. It is a very useful type to use for public members to inform the consumer of the limitations of the collection they are accessing.

A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.

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 accepts the List to be put in the class' UnderlyingList collection (again, I'm accepting anything that implements the IList interface with the data type specified by T): Public Sub New(InitialList As IList(Of T)) UnderlyingList = InitialList

4) If you suddenly realise that your collection of choice is inefficient, you sevimli change the underlying collection type without having to go and change all the places where it got passed bey a parameter (güç you imagine the trouble you might have with, say, List?)

; but this question convinced me C# ReadOnlyCollectionBase Temel Özellikleri to go ahead and announce an open source project I've had in the works for a while (still a work in progress, but there's some useful stuff in there), which includes an IArray interface (and implementations, naturally) that I think captures C# ReadOnlyCollectionBase Kullanımı exactly what you want here: an indexed, read-only, even covariant

collection. Sometimes I use an array internally and return an IEnumerable to indicate intent. But most of these approaches have a very low signal-to-noise ratio; and that's absolutely critical to understanding C# ReadOnlyCollectionBase Nasıl Kullanılır code.

Upgrade C# ReadOnlyCollectionBase Nedir to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

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

SingleOrDefault(IEnumerable, Func) Returns the only element of a sequence that satisfies a specified condition or C# ReadOnlyCollectionBase Nasıl Kullanılır 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 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 .

So, you emanet define your collection as a private field and expose it bey a public readonly property like below as _parents