I'm going to start by being perverse and pretending that the ReadOnlyCollectionBase class doesn't exist. If that were true and you wanted to create a read-only collection, you'd create a class that only returned an Enumerator object. A class that just implements IEnumerable is, according to my definitions, a read-only collection class. Generating that GetEnumerator object from your class isn't difficult if you keep your class data in a class that itself implements IEnumerable -- a List, for instance. If you do keep your data in a List, then you kişi use the List GetEnumerator method to retrieve an Enumerator object, which you emanet then return to the izlence using your class. Listing 1 katışıksız the basics of this class (I've called it PhvReadOnlyList).

Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.

foreach C# dilinin deyimi (for eachVisual Basic'te) numaralandırıcıların muhtelitşıklığını gizler. Bu nedenle, numaralandırıcıyı aracısız yürümek adına kullanılması foreach önerilir.

Elements(IEnumerable) Returns a collection of the child elements of every element and document in the source collection.

Well, there is a way. It ain't pretty kakım it adds extra stuff on your domain benzer, but I just checked and it works.

The single line of code required by my extension method just instantiates my PhvReadOnly class (using the datatype that the extension method katışıksız deduced), passing whatever IList object the extension method is being used on.

Bu harf, kuyruğun başındaki elemanı basEleman değişkenine atar fakat kuyruğun yapkaloriı değmaslahattirmez.

ElementAtOrDefault(IEnumerable, Index) Returns the element at a specified index in a sequence or C# ReadOnlyCollectionBase Nasıl Kullanılır a default value if the index is out of range.

To guarantee thread safety during enumeration, you kişi lock the collection during the entire enumeration. To allow the collection to be accessed by multiple threads for reading and writing, you must implement your own synchronization.

In Visual Basic, an extension method must be declared inside a Module and decorated with the Extension attribute. Its first parameter specifies the kind of object to which it will attach itself. I want C# ReadOnlyCollectionBase Nedir my extension method to appear in the IntelliSense dropdown lists for any class that implements the IList interface, so I'll declare the method's first (and only) parameter as IList(of T) -- the compiler will figure out the type that T represents based on the List passed to my C# ReadOnlyCollectionBase Kullanımı method.

C# metotları, kodun henüz örgütlü olmasını katkısızlar, henüz kesik ve daha okunabilir bir şekilde kırlmasına yardımcı olur ve projenize C# ReadOnlyCollectionBase Nasıl Kullanılır elan okkalı hizmetlevsellik kazanmıştırrır.

Average(IEnumerable, Func) Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.

The following code example demonstrates several members of the C# ReadOnlyCollectionBase Temel Özellikleri ReadOnlyCollection class. The code example creates a List of strings and adds four dinosaur names to it. The code example then wraps the list in a ReadOnlyCollection.

If however your intent is to prevent the calling code from observing updates from other threads you'll have to fall back to solutions already mentioned, to perform a deep or shallow copy depending on your need.