Adds transactional capability when adding a new item to a collection.
Assembly: System (in System.dll)
The interface enables a collection to add a new item in an extensible way. The new item subsequently can be committed or rolled back. The AddNew method of the collection is used to tentatively add the item, which is subsequently transacted through the following operations:
The EndNew method will explicitly commit the pending addition.
Performing another collection operation, such as an insertion, removal, or move will implicitly commit the pending addition.
The CancelNew method will roll back the pending addition if it has not already been committed.
In some scenarios, such as Windows Forms complex data binding, the collection may receive CancelNew or EndNew calls for items other than the newly added item. (Each item is typically a row in a data view.) Ignore these calls; cancel or commit the new item only when that item's index is specified.
There are two models that allow transactional addition of an item to a data-bound collection:
The older model relies directly on a collection that implements the IBindingList interface and is data-bound directly using the System.Windows.Forms.CurrencyManager class. The AddNew, EndCurrentEdit, and CancelCurrentEdit methods of the System.Windows.Forms.CurrencyManager class are responsible for transactional support for adding new items. However, this functionality depends upon the items supporting transactional behavior through the IEditableObject interface. If the items do not support this interface, the item will always be added to the list, regardless of subsequent calls to CancelCurrentEdit.
The newer model supports a more robust data-binding scenario through the generic BindingList(Of T) class, which implements the IBindingList and interfaces. In this case, the transactional support is managed by the BindingList(Of T) collection directly.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.