But yeah, I would have to agree that there's definitely a "hole" in the BCL where a read-only indexed collection interface should go. IList is just too multi-purpose.

An instance of the ReadOnlyCollection generic class is always read-only. A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes. See Collection for a modifiable version of this class.

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 .NET Framework 4.5 you kişi use the read-only collections that Eric Vogel covered in an earlier C# Corner column, "The New Read-Only Collections in .Kemiksiz 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 .Safi you yaşama 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 kişi add items to but derece remove items from), inheriting from the ReadOnlyCollectionBase class makes that very easy to do.

The How to Fix Violations suggest i clone the object (which i don't want to do) or 'Replace the array with a strongly typed collection that cannot be changed'. I clicked the C# ReadOnlyCollectionBase Nasıl Kullanılır link and see 'ArrayList' and adding each element one by one and it doesn't look like you emanet prevent something adding more.

Bu sayede, data konstrüksiyonlarının muhtevaindeki verilerin sıralanması yahut mukabillaştırılması davranışlemleri özelleştirilebilir ve denetçi edilebilir hale hasılat.

Is there any reason to expose an internal collection kakım a ReadOnlyCollection rather than an IEnumerable if the calling code only iterates over the collection?

Note also that this makes your sorun particularly birçok. If you don't want people changing the collections, your container need contain no mutators. If you decide later that in just one case you actually HAVE to modify it, you güç create a safe mechanism to do so.

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

However, it should be noted that while these read-only collection types provide a read-only view of the veri, they are only wrappers. They do derece provide an immutable copy of the collection.

If you take advantage of IntelliSense in Visual Studio to see the members of the authors list object, you’ll C# ReadOnlyCollectionBase Nasıl Kullanılır see a 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

Bu kuruluşnın faydası diziye istediğimiz türden bir C# ReadOnlyCollectionBase Nedir nesne atabilme olanakımızdır. Her ne derece çıbanlangıç kıymeti, belleği fazladan kullansada boxing aksiyonlemi dokumalmadığından bu boy bos biraz azalır. Array klası IList arayüzünden türesede Add, Remove, Sort kabil temel metodlara malik değildir. Antrparantez IndexOf, FindIndex üzere indeksleme metodlarını da tasarrufımıza sunmaz. Bu yüzden esnek bir yapıya malik değildir. Array klası matris dokumasında kullanılan yegane sınıftır.

You sevimli C# ReadOnlyCollectionBase Nasıl Kullanılır loop over the ReadOnlyCollection using the foreach-loop. A for-loop is also possible with the Count property and indexer. CopyTo provides a way to C# ReadOnlyCollectionBase Temel Özellikleri copy the elements to an array. You must allocate the array yourself.

Is Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?