C# ReadOnlyCollectionBase Nasıl Kullanılır Için 5-İkinci Trick

C# ReadOnlyCollectionBase Nasıl Kullanılır Için 5-İkinci Trick

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This doesn't create a copy of list. ReadOnlyCollection doesn't copy the veri, it works directly on the supplied list. See documentation:

Dot Safi Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a ferde priority.

I had a client recently who wanted me to create a class that exposed a read-only collection through one of the class properties. While my client was willing to let other programs loop through that collection and retrieve items from the collection by position, he didn't want to let those programs add or remove items from the collection. In the Microsoft .Kemiksiz Framework 4.5 you hayat use the read-only collections that Eric Vogel covered in an earlier C# Corner column, "The New Read-Only Collections in .Kupkuru 4.5," to define that property. My client, however, was working with the .Kupkuru Framework 4 and didn't intend to upgrade. Fortunately, in earlier versions of .Safi you emanet also create a read-only class from an existing List just by calling your List's AsReadOnly method. However, if you need something special (a List that users sevimli add items to but derece remove items from), inheriting from the ReadOnlyCollectionBase class makes that very easy to do.

Güç you arrange 25 whole numbers (hamiş necessarily all different) so that the sum of any three successive terms is even C# ReadOnlyCollectionBase Temel Özellikleri but the sum of all 25 is odd?

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

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

A ReadOnlyCollection sevimli support multiple readers concurrently, kakım long kakım the collection is not modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure.

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

Hayat you arrange 25 whole numbers (derece necessarily all different) so that the sum of any three successive terms is even but the sum of all 25 is odd? more hot questions

A ReadOnlyCollectionBase instance is always read-only. C# ReadOnlyCollectionBase Kullanımı See CollectionBase for a modifiable version of this class.

SingleOrDefault(IEnumerable, Func, TSource) Returns the only element of a sequence that satisfies a specified condition, or a specified default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

Enumerating through a collection is intrinsically derece a thread-safe procedure. Even when a collection is synchronized, other threads sevimli still modify the collection, which C# ReadOnlyCollectionBase Nasıl Kullanılır causes the enumerator to throw an exception.

The following code example demonstrates several members of the ReadOnlyCollection class. The code example creates a List of strings and adds four dinosaur names to it. The code example then wraps the list C# ReadOnlyCollectionBase Kullanımı in a ReadOnlyCollection.

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