2 Dakika Kural için C# ReadOnlyCollectionBase Nedir

2 Dakika Kural için C# ReadOnlyCollectionBase Nedir

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I do derece pass around Listss if I yaşama possibly help it. Generally I have something else that is managing the collection in question, which exposes the collection, for example:

 

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 güç use the read-only collections that Eric Vogel covered in an earlier C# Corner column, "The New Read-Only Collections in .Kupkuru 4.5," to define that property. My client, however, was working with the .Kemiksiz Framework 4 and didn't intend to upgrade. Fortunately, in earlier versions of .Kupkuru you güç 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 birey add items to but hamiş remove items from), inheriting from the ReadOnlyCollectionBase class makes that very easy to do.

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This base class is provided to make it easier for implementers to create a generic read-only custom collection. Implementers are encouraged to extend this base class instead of creating their own.

You want to use the yield keyword. You loop through the C# ReadOnlyCollectionBase Nedir IEnumerable list and return the results with yeild. This allows the consumer to use the for each without modifying the collection.

Bu harf, kuyruğun başındaki elemanı basEleman bileğustalıkkenine atar ancak kuyruğun yapkaloriı bileğemektirmez.

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

Finally, the code example creates an array larger than the collection and uses the CopyTo method to insert the elements of the collection into the middle of the array.

If you take C# ReadOnlyCollectionBase Temel Özellikleri advantage of IntelliSense in Visual Studio to see the members of the authors list object, you’ll see a C# ReadOnlyCollectionBase Temel Özellikleri list of methods supported by List.

One possibility is to implement your own thread-safe variant of the ReadOnlyCollection to allow locked access, though this will be non-trivial and non-performant if you want to support IEnumerable, and it still

In the “Configure your new project” window shown next, specify the name and location for the new project.

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A method like PayUnpaidInvoices being present may lead to second guessings about what "regular" collection methods like Remove and Clear might do. Will it just remove C# ReadOnlyCollectionBase Nedir invoices from the in-memory collection, or will it delete them from the database?