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DataChangeEventArgs Class
DataChangeEventArgs Class
Heirarchy
-
EventArgs
- DataChangeEventArgs
Constructors
constructor
-
Initializes a new instance of the DataChangeEventArgs class.
Parameters
-
action: DataChangeAction
Type of action that caused the event to fire.
-
oldItem: any
Original item that was removed or changed.
-
newItem: any
New item that was added or changed.
-
itemIndex: any
Index of the item.
Returns DataChangeEventArgs
-
Properties
action
Gets the action that caused the event to fire.
itemIndex
Gets an index of the item affected by the change in the ImmutabilityProvider.itemsSource array, depending on the action:
- Remove: the removed item index
- Add: the added item index
- Change: the changed item index
newItem
Gets an item with changes, depending on the action:
- Remove: a null value.
- Add: the new added item
- Change: the cloned item with modifications
oldItem
Gets an existing item affected by the change, depending on the action:
- Remove: the removed item from the ImmutabilityProvider.itemsSource array.
- Add: a null value.
- Change: the original item from the ImmutabilityProvider.itemsSource array (not modified, the cloned item with the modifications is in the newItem property).
Static empty
Provides a value to use with events that do not have event data.
Provides data for the ImmutabilityProvider.dataChanged event.