When overridden in a derived class, adds a new item to the underlying list.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The method adds a new item to the underlying list by using the default constructor for that item's type. is intended primarily to be used by programmers adding complex data-binding support to their custom component.
is commonly implemented using the following pattern that allows application programmers to inject their own code for creating customized items:
raises the AddingNew event.
The programmer can supply a custom item by handling the AddingNew event and setting the NewObject property of the AddingNewEventArgs parameter to the new item. Otherwise, the component should create an item using the default constructor.
If the data source does not implement the IEditableObject interface, the item is immediately added to the data source and underlying list. If this interface is supported, then the addition is transacted by the CancelCurrentEdit and EndCurrentEdit methods.
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)