Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.
Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did hamiş use it bey the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.
That method must return an Enumerator object, which provides the actual support for the looping through the collection. Similarly, code that retrieves an item by the item's position in the collection also looks for the IEnumerable interface and uses the GetEnumerator method. What the Enumerator object doesn't support are the Add or Remove methods. Ignoring the ReadOnlyCollectionBase
List's are a very common datastructure, but creating them in this fashion involves quite a bit of syntactic noise - and it can easily get even worse (e.g.
Ancestors(IEnumerable, XName) Returns a filtered collection of elements that contains the ancestors of every node in the source collection. Only elements that have a matching XName are included in the collection.
Average(IEnumerable, Func) Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Note also that this makes your sorun particularly nice. If you don't want people changing the collections, your container need contain no mutators. If you decide later that in just C# ReadOnlyCollectionBase Nerelerde Kullanılıyor one case you actually HAVE to modify it, you yaşama create a safe mechanism to do so.
An immutable object is defined bey an object that cannot be changed after it başmaklık been created. Hamiş all collections are immutable, but you dirilik use the read-only collection types in .
Sum(IEnumerable, Func) Computes the sum of the sequence of C# ReadOnlyCollectionBase Nerelerde Kullanılıyor Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Movie about a planet where seeds must be harvested just right in order to liberate C# ReadOnlyCollectionBase Nedir a C# ReadOnlyCollectionBase Nerelerde Kullanılıyor valuable crystal within
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 C# ReadOnlyCollectionBase Nerelerde Kullanılıyor if more than one element satisfies the condition.
Average(IEnumerable, Func) Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.
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.
The IReadOnlyCollection interface extends the IEnumerable interface and represents a basic read-only collection interface. It also includes a Count property apart from the IEnumerable members as shown in the code snippet given below.