En iyi Tarafı C# ReadOnlyCollectionBase Kullanımı

En iyi Tarafı C# ReadOnlyCollectionBase Kullanımı

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My code is littered with collections - derece an unusual thing, I suppose. However, usage of the various collection types isn't obvious nor trivial. Generally, I'd like to use the type that's exposes the "best" API, and katışıksız the least syntactic noise.

This class makes the underlying collection available through the InnerList property, which is intended for use only by classes that are derived directly from ReadOnlyCollectionBase. The derived class must ensure that its own users cannot modify the underlying collection.

Data Konstrüksiyonlarına Hakimiyet: Queue kullanımı, muta konstrüksiyonlarını anlamak ve bu bünyeları patetik bir şekilde kullanabilmek kucakin önemli bir adımdır.

Descendants(IEnumerable, XName) Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

Imagine we have existing paradigma with Organization => Employees already set up. To apply this technique, we need to change Organization sistem a bit:

Also, native collections birey't be enhanced with extra data. You'll recognize this next time you find that you pass in (Collection, Extra) to more than one or two methods. It indicates that "Extra" belongs with the object containing your collection.

If your only intent is to get calling code to derece make a mistake, and modify the collection when it should only be reading all that is necessary is to return an interface which doesn't support Add, Remove, etc.

Important Some information relates to prerelease product that may be substantially modified before it’s released. C# ReadOnlyCollectionBase Nasıl Kullanılır Microsoft makes no warranties, express or implied, with respect to the information provided here.

SkipLast(IEnumerable, Int32) Returns a new enumerable collection that contains the elements from C# ReadOnlyCollectionBase Kullanımı source with the last count elements of the source collection omitted.

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However, the syntax is awkward. Adding an extension method kişi simplify that syntax tremendously. Extension methods have at least three convenient features: The first is that they attach C# ReadOnlyCollectionBase Kullanımı 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 from as their first parameter; third, when an extension method is used with a generic class (for instance, List), the method automatically figures out the veri type of the generic parameter.

Enumerating through a collection is intrinsically not a thread-safe procedure. Even when a collection is synchronized, other threads kişi still modify the collection, which causes the enumerator to throw an exception.

1 Also, in the provided case, the best center of knowledge on whether the invoice birey be paid is the invoice itself, so it must have a property CanBePaid - so, a bit of cleverness C# ReadOnlyCollectionBase Nedir eliminates the need to change "in 4 places"

Initializes a new instance of the ReadOnlyCollection class that is a read-only wrapper around the specified list.