With this type from System.Collections.ObjectModel, we provide a collection of elements that cannot be changed. But it may be possible to change some elements themselves.
Simply put, Microsoft defined a ReadOnlyCollectionBase, yet did derece use it birli the base class for ReadOnlyCollection when it clearly sounds that this should have been the way.
Kemiksiz 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 not tied to a specific implementation.
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.
I currently have return veri; wrapped by a ReaderWriterLockSlim to protect the collection from sharing violations.
You yaşama expose private collection properties to EF, allowing for mapping and querying, while still keeping your domain object's members and relationships properly encapsulated. It's a bit messy, but it works:
Bu makalede, C# metotlarının niye kullanıldığı, ne alışverişe yaradığı ve nasıl özellikler sunduğu karşı elan detaylı vukuf vereceğim.
After hopefully understanding your question, i think you have to distinguish between what you create and manage within your class and what you make available to the outside world.
Public static (Shared in Visual Basic) members of this type are thread safe. Any instance C# ReadOnlyCollectionBase Temel Özellikleri members are derece guaranteed to be thread safe.
Figure 1 below displays the members of List. Note that you have a method named Add, so you güç easily add authors to the list of authors we’ve created in the preceding code snippet.
However, if you want to access the elements of the IEnumerable collection by index or you want to retrieve the number of elements in the collection, you should use IReadOnlyList birli shown below.
Important Some information relates to prerelease product C# ReadOnlyCollectionBase Kullanımı that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
You güç loop over the ReadOnlyCollection using the foreach-loop. A for-loop is also possible C# ReadOnlyCollectionBase Nasıl Kullanılır with the Count property and indexer. CopyTo provides a way to copy the elements C# ReadOnlyCollectionBase Kullanımı to an array. You must allocate the array yourself.
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Decimal values that are C# ReadOnlyCollectionBase Nasıl Kullanılır obtained by invoking a transform function on each element of the input sequence.