Hakkında C# ReadOnlyCollectionBase Temel Özellikleri

Hakkında C# ReadOnlyCollectionBase Temel Özellikleri

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To guarantee thread safety during enumeration, you birey either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.

An instance of the ReadOnlyCollection generic class is always read-only. 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. See Collection for a modifiable version of this class.

C# IStructuralEquatable arabirimini uygulayan bir derslik ile yapısal müsavat kontrolü nasıl binalır? Bayağıdaki örnekte bu konuyu detaylı olarak görebilirsiniz:

This hides Add and Remove methods, but does derece protect at all. Because I kişi always cast to ICollection and call prohibited method.

Well, there is a way. It ain't pretty birli it adds extra stuff on your domain prototip, but I just checked and it works.

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 Kakım IList(Of T)) UnderlyingList = InitialList

Note also that this makes your sorun particularly nice. If you don't want people changing the collections, your container need contain no mutators. If you decide later that in just one case you actually HAVE to modify it, you gönül create C# ReadOnlyCollectionBase Nerelerde Kullanılıyor a safe mechanism to do so.

It depends on how much you trust the calling code. If you're in complete control over everything that will ever call this member and you guarantee

So easy, in fact, that I don't need a full column to do it (and if that's all you want from this column, you sevimli skip to the end where I discuss both the AsReadOnly method and using the ReadOnlyCollectionBase class). What this topic does C# ReadOnlyCollectionBase Nerelerde Kullanılıyor give me is an excuse to talk about several things: how interfaces in .Kemiksiz and the compiler work together; how creating C# ReadOnlyCollectionBase Nasıl Kullanılır generic classes gives you flexibility; how you birey exploit one of the built-in .Kemiksiz interfaces; and (finally) how to simplify ugly syntax by building your own extension methods. I also think that you don't really understand anything unless you birey see a way to write it yourself, and this topic lets me do that, too, by showing how you hayat create the .NET ReadOnlyCollectionBase C# ReadOnlyCollectionBase Nasıl Kullanılır class. So this column is bey much about providing insight into how .Kupkuru works kakım it is about doing something C# ReadOnlyCollectionBase Nasıl Kullanılır practical. Foundation Knowledge

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Implementers are encouraged to extend this base class instead of creating their own. Members of this base class are protected and are intended to be used through a derived class only.

First, some definitions: A read-only collection is like a List in that it supports iterating through the items with a For…Each loop or retrieving an item in the collection by position.

If you need to do more than the InnerList property will let you, the base class Items property will hand you back the whole List. Kakım I said, creating a read-only collection class in .

Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function.