ReadOnlyCollection<T>.IList.Item[Int32] Property


Gets the element at the specified index. A NotSupportedException occurs if you try to set the item at the specified index.

property System::Object ^ System::Collections::IList::Item[int] { System::Object ^ get(int index); void set(int index, System::Object ^ value); };
object System.Collections.IList.Item[int index] { get; set; }
 Property Item(index As Integer) As Object Implements IList.Item



The zero-based index of the element to get.

Property Value

The element at the specified index.



index is not a valid index in the IList.

Always thrown if the property is set.


This property provides the ability to access a specific element in the collection by using the following syntax: myCollection[index].

The C# language uses the this keyword to define the indexers instead of implementing the IList.Item[Int32] property. Visual Basic implements IList.Item[Int32] as a default property, which provides the same indexing functionality.

Retrieving the value of this property is an O(1) operation.

This member is an explicit interface member implementation. It can be used only when the ReadOnlyCollection<T> instance is cast to an IDisposable interface.

Applies to