C# ReadOnlyCollectionBase Nasıl Kullanılır Için 5-İkinci Trick

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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 data in a class that itself implements IEnumerable -- a List, for instance. If you do keep your data in a List, then you güç use the List GetEnumerator method to retrieve an Enumerator object, which you gönül then return to the program using your class. Listing 1 katışıksız the basics of this class (I've called it PhvReadOnlyList).

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Ayrıca, nominalmınızın performansını çoğaltmak karınin metotları optimize edebilir ve kodun elan hızlı çdüzenışmasını esenlayabilirsiniz.

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.

The main advantage of this comes in the fact that you emanet't add code to collections so whenever you have a native "collection" in your object sistem, you ALWAYS C# ReadOnlyCollectionBase Nasıl Kullanılır have non-OO support code spread throughout your project to access it.

C# ReadOnlyCollectionBase Kullanımı Let’s explore an example of using IReadOnlyList in place of List in order to make our list read-only. Consider the following class:

Bu makalede, C# metotlarının illet kullanıldığı, ne medarımaişete C# ReadOnlyCollectionBase Temel Özellikleri yaradığı ve nasıl özellikler sunduğu için daha detaylı veri vereceğim.

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

It's hamiş a concrete type like ReadOnlyCollection, so it doesn't tie you down to a specific implementation.

API Entegrasyonu: Dış API'lerden düzenınan verileri nüfuz etmek ve yönetmek derunin kullanılabilir, bu da uygulamalar arası done pazarini kolaylaştırır.

However, the syntax is awkward. Adding an extension method gönül simplify that syntax tremendously. Extension methods have at least three convenient features: The first is that they attach themselves to whatever classes you specify, automatically appearing in the IntelliSense dropdown lists for those objects; second, they're automatically passed whatever object they're called C# ReadOnlyCollectionBase Kullanımı from bey their first parameter; third, when an extension method is used with a generic class (for instance, List), the method automatically figures out the data type of the generic parameter.

Inheriting from a non-generic base class would be ineffecient. If the type was using a non-generic base, all it would be would be a thin layer above the base collection, where the generic features would simply derive from casting from the underlying object instances of the base collection.

Average(IEnumerable, Func) Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.

In the class that exposes C# ReadOnlyCollectionBase Kullanımı a read-only property based on PhvReadOnlyList, you still need an ordinary List, with its Add and Remove methods, so that your class dirilik put items in the List both before and after creating a PhvReadOnlyList from it.