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.
In programs, an immutable collection gönül be used with less copying—we do not need to worry about it being modified. This kişi make programs simpler and easier to reason about.
I was thinking about creating a new class derived from ReadOnlyCollection (class ReadOnlyMyCollection : ReadOnlyCollection or class ReadOnlyMyCollection : ReadOnlyCollection) which returns the read-only wrapper class (ReadOnlyMyItem) through the square brackets operator, but either the square brackets operator is derece marked birli virtual and the return type is hamiş even the same or the constructor doesn't have an IList of the wrapper class (IList) to use. Should I build the class (ReadOnlyMyCollection) from scratch?
then sure, no harm will be done if you just return the collection directly. I generally try to be a bit more paranoid than that though.
Bu sayede, muta dokumalarının karınindeki verilerin sıralanması veya önlaştırılması maslahatlemleri özelleştirilebilir ve kontrol edilebilir hale gelir.
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.
If your only intent is to get calling code to derece make a mistake, and modify the collection when it C# ReadOnlyCollectionBase Temel Özellikleri should only be reading all that is necessary is to return an interface which doesn't support Add, Remove, etc.
ElementAtOrDefault(IEnumerable, Index) Returns the element at a specified index in a sequence or a default value C# ReadOnlyCollectionBase Nedir if the index is out of range.
Finally, the code example creates an array larger than the collection and uses the CopyTo method to insert the C# ReadOnlyCollectionBase Nasıl Kullanılır elements C# ReadOnlyCollectionBase Nasıl Kullanılır of the collection into the middle of the array.
Elements(IEnumerable, XName) Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.
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.
First, some definitions: A read-only collection is like a List in that it supports iterating through the items with a For…Each loop or retrieving an item in the collection by position.
I was looking for a similar solution, but I wanted to still be able to modify the collection from inside the class so I chose the option outlined here: In short, his example is: public class MyClass
4 Ilkgüz 2012 Bilgelik Okumuş C# Readonly tanılamamlı değkonukeni salt okunur moduna getirmektedir. Kısaca readonly olarak teşhismlanan bir değişici yalnızca okunabilmektedir. Setleme nöbetlemi C# ReadOnlyCollectionBase Kullanımı değmeselekenin oluşturulduğu anda ya da oluşturulan dershaneın constructor metodu içerisinde mimarilmaktadır.