C# ReadOnlyCollectionBase Kullanımı Üzerinde Buzz söylenti

C# ReadOnlyCollectionBase Kullanımı Üzerinde Buzz söylenti

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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.

 

I had a client recently who wanted me to create a class that exposed a read-only collection through one of the class properties. While my client was willing to let other programs loop through that collection and retrieve items from the collection by position, he didn't want to let those programs add or remove items from the collection. In the Microsoft .Safi Framework 4.5 you emanet use the read-only collections that Eric Vogel covered in an earlier C# Corner column, "The New Read-Only Collections in .NET 4.5," to define that property. My client, however, was working with the .NET Framework 4 and didn't intend to upgrade. Fortunately, in earlier versions of .NET you dirilik also create a read-only class from an existing List just by calling your List's AsReadOnly method. However, if you need something special (a List that users yaşama add items to but hamiş remove items from), inheriting from the ReadOnlyCollectionBase class makes that very easy to do.

Which means that I always have to cast the items back to MyItem when I want to use them. Also the items güç be casted into MyItem outside the class.

Sum(IEnumerable, Func) Computes C# ReadOnlyCollectionBase Nerelerde Kullanılıyor the sum of the sequence of Double values that are obtained by invoking a transform function C# ReadOnlyCollectionBase Temel Özellikleri on each element of the input sequence.

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

Ancestors(IEnumerable) C# ReadOnlyCollectionBase Nedir Returns a collection of elements that contains the ancestors of every node in the source collection.

It depends on how much you trust the calling code. If you're in complete control over everything that will ever call this member and you guarantee

well, NHibernate gönül takım private class fields and this means that you dirilik expose it using a public property encapsulating the field birli read-only collection.

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Nothing wrong with wordy types for major API's with small surfaces, but derece birli a general practice inside a large codebase.

C# Metot niye kullanılır? C# Metotlar, bir izlence içre tekrar yine kullanılması müstelzim harf bloklarını gruplandırmak ve daha sonrasında içmek midein kullanılır. Facebook Twitter Whatsapp Tumbler Pinterest

When you pass around collections instead of writing an object manken, entire classes of refactorings C# ReadOnlyCollectionBase Nasıl Kullanılır will never occur to you.

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