Gets the element at the specified index.
Assembly: mscorlib (in mscorlib.dll)
This property provides the ability to access a specific element in the collection by using the following C# syntax: myCollection[index] (myCollection(index) in Visual Basic).
The C# language uses the this keyword to define the indexers instead of implementing the property. Visual Basic implements as a default property, which provides the same indexing functionality.
Retrieving the value of this property is an O(1) operation.
The following code example demonstrates several members of the ReadOnlyCollection(T) class. The code example creates a List(T) of strings and adds four dinosaur names to it. The code example then wraps the list in a ReadOnlyCollection(T).
After demonstrating the Count, Contains, , and IList.IndexOf members, the code example shows that the ReadOnlyCollection(T) is just a wrapper for the original List(T) by adding a new item to the List(T) and displaying the contents of the ReadOnlyCollection(T).
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.
.NET FrameworkSupported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
Portable Class LibrarySupported in: Portable Class Library
.NET for Windows Store appsSupported in: Windows 8
.NET for Windows Phone appsSupported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.