ArrayList.Item Property
Assembly: mscorlib (in mscorlib.dll)
public: virtual property Object^ default [int] { Object^ get (int index); void set (int index, Object^ value); }
/** @property */ public Object get_Item (int index) /** @property */ public void set_Item (int index, Object value)
Not applicable.
Parameters
- index
The zero-based index of the element to get or set.
Property Value
The element at the specified index.| Exception type | Condition |
|---|---|
| index is less than zero. -or- index is equal to or greater than Count. |
ArrayList accepts a null reference (Nothing in Visual Basic) as a valid value and allows duplicate elements.
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 Item property. Visual Basic implements Item as a default property, which provides the same indexing functionality.
Retrieving the value of this property is an O(1) operation; setting the property is also an O(1) operation.
The following code example creates an ArrayList and adds several items. The example demonstrates accessing elements with the Item property (the indexer in C#), and changing an element by assigning a new value to the Item property for a specified index. The example also shows that the Item property cannot be used to access or add elements outside the current size of the list.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.