Küçük C# ReadOnlyCollectionBase Nedir Hakkında Gerçekler Bilinen.
Küçük C# ReadOnlyCollectionBase Nedir Hakkında Gerçekler Bilinen.
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Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.
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Example. In this izlence, a list of ints is created, and then the ReadOnlyCollection constructor is used with that List birli an argument. Inside the ReadOnlyCollection constructor, a reference to the argument is stored as an IList reference field.
If you (Class A) continue to modify the underlying collection after you hand it out as a ReadOnlyCollection then class B will see these changes, have any iterators invalidated, etc. and generally be open to any of the usual concurrency issues with collections.
Bu tür bir zıtlaştırma, makale serlıklarının sıralamasının önemli olduğu durumlarda, konstrüktif benzerliklerin yahut farklılıkların belirlenmesine yardımcı olur.
The single line of code required by my extension method just instantiates my PhvReadOnly class (using the datatype that the extension method özgü deduced), passing whatever IList object the extension method is being used on.
Note also that this makes your sıkıntı particularly birçok. If you don't want people changing the collections, your container need contain no mutators. If you decide later that in just one case you actually HAVE to modify C# ReadOnlyCollectionBase Nerelerde Kullanılıyor it, you dirilik create a safe mechanism to do so.
protected virtual ICollection EmployeesInternal get; private grup; = new List(); // this will expose collection contents to public, seemingly unneccessary `Skip` statement C# ReadOnlyCollectionBase Nasıl Kullanılır will prevent casting back to Collection
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Double values that are obtained by invoking a C# ReadOnlyCollectionBase Temel Özellikleri transform function on each element of the input sequence.
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.
This kişi be a sorun when your class has some invariants (guarantees about what it does and the veri it holds) kakım it cannot make guaranteed if other classes birey change its internals willy nilly.
This implementation does derece provide a synchronized (thread safe) wrapper for a ReadOnlyCollectionBase, but derived classes emanet create their own synchronized versions of the ReadOnlyCollectionBase using the SyncRoot property.
Eamon NerbonneEamon Nerbonne 47.7k2020 gold badges102102 silver badges169169 C# ReadOnlyCollectionBase Nedir bronze badges 1 So, I've actually got an open source library which includes an IArray interface that I believe is mefkûre for precisely this purpose. See my updated answer for a bit C# ReadOnlyCollectionBase Kullanımı more info.
One should note that aku's answer will only protect the list bey being read only. Elements in the list are still very writable.