5 Temel Unsurları için C# ReadOnlyCollectionBase Nedir

5 Temel Unsurları için C# ReadOnlyCollectionBase Nedir

Blog Article

You've probably identified what pattern the PhvReadOnlyList implements: it's a wrapper. In the .Kupkuru Framework 4.0 or earlier, the wrapper class that you'd really use to create a read-only list would be the .Kemiksiz ReadOnlyCollectionBase class. Bey with my example, you use the ReadOnlyCollectionBase class to create your own class with whatever functionality you need -- but you don't need to write the GetEnumerator method or create your own UnderlyingList because the ReadOnlyCollectionBase handles both.

 

Bu tür senaryolarda, IStructuralEquatable arabirimi sayesinde koleksiyonların yapkaloriı ve içeriğini çın bir şekilde karşılaştırarak pratik başarımını artırabilir ve data manipülasyon işlemlerini muteber bir şekilde gerçekleştirebilirsiniz.

C# IStructuralEquatable arabirimi, koleksiyonların yapısal eşitliğini tanımlamak muhtevain kullanılır. İki nesnenin içeriğinin aynı olup olmadığını tespit etmek ve bu nesnelerin karşılaştırılabilirliğini hazırlamak yürekin önemli yöntemler sunar.

Sum(IEnumerable, Func) Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.

For this collection to be useful, however, you need to be able to load that internal list with your collection. The easiest way to do that is to add a constructor to the class that accepts the List to be put in the class' UnderlyingList collection (again, I'm accepting anything that implements the IList interface with the data type specified by T): Public Sub New(InitialList Kakım IList(Of T)) UnderlyingList = InitialList

4) If you suddenly realise that your collection of choice is inefficient, you hayat change the underlying collection type without having to go and change all the places where it got passed kakım a parameter (birey you imagine the C# ReadOnlyCollectionBase Kullanımı trouble you might have with, say, List?)

Collaborate with us on GitHub The source for this content hayat be found on GitHub, where you dirilik also create and review issues and pull requests. For more information, see our contributor guide.

Any idea why IList doesn't inherit from ICollection? Since the C# ReadOnlyCollectionBase Nedir latter is basically IEnumerable plus Count, and since IList already has a Count method, having IList inherit ICollection wouldn't C# ReadOnlyCollectionBase Nedir have required any more work for implementers, but would have allowed someone with an IList to know how many items to expect from an enumeration.

When call the above code. C# ReadOnlyCollectionBase Nasıl Kullanılır The changes happening in the call ---1 is getting reflected the CategoryList and its affecting the call 2 . How güç I make the CategoryList birli ready Only and I am hamiş supposed to change the collection inside the categoryList .But the collection is getting affected .

Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are hamiş guaranteed to be thread safe.

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.

If you need to do more than the InnerList property will let you, the base class Items property will hand you back the whole List. Bey I said, creating a read-only collection class in .

Key values are compared by using a specified comparer, and C# ReadOnlyCollectionBase Nerelerde Kullanılıyor the elements of each group are projected by using a specified function.