Don't return a collection directly. Make an accurately named business logic class that reflects the purpose of the collection.
In programs, an immutable collection kişi be used with less copying—we do derece need to worry about it being modified. This güç make programs simpler and easier to reason about.
Safi 4.5, you may want to try the new read-only collection interfaces. You'll still want to wrap the returned collection in a ReadOnlyCollection if you're paranoid, but now you're derece tied to a specific implementation.
The How to Fix Violations suggest i clone the object (which i don't want to do) or 'Replace the array with a strongly typed collection that cannot be changed'. I clicked the link and see 'ArrayList' and adding each element one by one and it doesn't look like you hayat prevent something adding more.
Well, there is a way. It ain't pretty kakım it adds extra stuff on your domain sistem, but I just checked and it works.
Is there any reason to expose an internal collection birli a ReadOnlyCollection rather than an IEnumerable if the calling code only iterates over the collection?
4) If you suddenly realise C# ReadOnlyCollectionBase Temel Özellikleri that your collection of choice is inefficient, you sevimli change the underlying collection type without having to go and change all the places where it got passed birli a parameter (güç C# ReadOnlyCollectionBase Nedir you imagine the trouble you might have with, say, List?)
After hopefully understanding your question, i C# ReadOnlyCollectionBase Nerelerde Kullanılıyor think you have to distinguish between what you create and manage within your class and what you make available to the outside world.
Exposing the array directly to those using it means that they dirilik modify it - this is a violation of encapsulation and veri hiding.
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.
DO use the least-specialized type possible bey a parameter type. Most members taking collections bey parameters use the IEnumerable interface.
SequenceEqual(IEnumerable, IEnumerable) Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.
End Sub And that's all you need to write. The class that's using your new read-only collection would be identical to the C# ReadOnlyCollectionBase Temel Özellikleri class that used my custom PhvReadOnlyList. In fact, if that's all you want, then you don't even need to create your own version of the ReadOnlyCollectionBase class -- the .
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Decimal values that are obtained by invoking a transform C# ReadOnlyCollectionBase Temel Özellikleri function on each element of the input sequence.