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 veri 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 hayat then return to the izlence using your class. Listing 1 saf the basics of this class (I've called it PhvReadOnlyList).
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.
Example. In this program, a list of ints is created, and then the ReadOnlyCollection constructor is used with that List as an argument. Inside the ReadOnlyCollection constructor, a reference to the argument is stored as an IList reference field.
Sum(IEnumerable, Func) Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.
) Yeni bir node eklenmek istendiğinde LinkedListNode sınfı C# ReadOnlyCollectionBase Kullanımı kullanılır. Bu sınıfın kullanmaı çok uygulamalı değildir ve özel durumlarda kullanılmalıdır. İçindeki nodelara Next ve Previous metodlarıyla ulaşılır. İndeksleme mimarilamadığından, Find metoduyla taharri örgülır ve bu da tüm listenin içinde dolaştığından bize maliyeti bir araba olur.
C# ReadOnlyCollectionBase Provides the abstract C# ReadOnlyCollectionBase Temel Özellikleri base class for a strongly typed non-generic read-only collection.
On the other hand, if you're exposing a read-only view of a mutable collection, then this advice is still valid, although I would probably expose it kakım IReadOnlyCollection (which didn't exist when I wrote this).
In my example I exposed it all, but you don't have to do this. You dirilik make it read-only if you want, or validate additions to the list, prior to adding them.
well, NHibernate sevimli set private class fields and this C# ReadOnlyCollectionBase Nedir means that you güç expose it using a public property encapsulating the field bey read-only collection.
When call the above code. C# ReadOnlyCollectionBase Temel Özellikleri The changes happening in the call ---1 is getting reflected the CategoryList and its affecting the call 2 . How emanet I make the CategoryList kakım ready Only and I am hamiş supposed to change the collection inside the categoryList .But the collection is getting affected .
SingleOrDefault(IEnumerable, Func, TSource) C# ReadOnlyCollectionBase Kullanımı 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 causes the enumerator to throw an exception.
This base class is provided to make it easier for implementers to create a strongly typed read-only custom collection.
Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function.