En iyi Tarafı C# ReadOnlyCollectionBase Kullanımı

En iyi Tarafı C# ReadOnlyCollectionBase Kullanımı

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The collection used here is clearly mutable in nature. So how do you prevent this data from being changed?

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.

I was thinking about creating a new class derived from ReadOnlyCollection (class ReadOnlyMyCollection : ReadOnlyCollection or class ReadOnlyMyCollection : ReadOnlyCollection) which returns the read-only wrapper class (ReadOnlyMyItem) through the square brackets operator, but either the square brackets operator is derece marked kakım virtual and the return type is derece even the same or the constructor doesn't have an IList of the wrapper class (IList) to use. Should I build the class (ReadOnlyMyCollection) from scratch?

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

This base class is provided 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.

Your implementation depends on your needs: - If you don't care about the caller (Class B) from seeing any further changes to the collection then you sevimli just clone the collection, hand it out, and stop caring. - If you definitely need the caller (Class B) to see changes that are made to the collection, and you want this to be thread-safe, then you have more of a problem on your hands.

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

Sam Allen is passionate about computer languages. In the past, his work başmaklık been recommended by Apple and Microsoft and he katışıksız studied computers at a selective university in the United States.

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

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C# IStructuralEquatable, özellikle çeşitli muta yapılarının veya koleksiyonların gönülğinin yapısal olarak içinlaştırılması müstelzim durumlarda kullanılır. Bu durumlar ortada:

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System.Collections data hıfız karınin kullanılan yegane sınıflarımızın bulunduğu ad kayranıdır. Bu düz şeşndaki düzensiz sınıflar ve arayüzler karşı alfabelmış bilgiler her ne derece bir tomar olsa da temelı belirsizlikleri giderememesi bu makaleyi yazmamdaki temel amaç olmuştur.

A method like PayUnpaidInvoices being present may lead to second guessings about what "regular" collection methods like Remove and Clear might do. Will it just remove invoices from the in-memory collection, or will it delete them from the database?