TreeListView.CellValueChanging Event

Fires in response to changing the edit value.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v14.2.dll

Declaration

C#

public event TreeListCellValueChangedEventHandler CellValueChanging

VB.NET

Public Event CellValueChanging As TreeListCellValueChangedEventHandler

Event Data

The CellValueChanging event's handler receives an argument of the TreeListCellValueChangedEventArgs type. The following properties provide information specific to this event:

Property	Description
Cell	Gets or sets the CellValue object consisting of information about the cell being processed. Inherited from TreeListCellValueEventArgs.
Column	Gets a column that contains the edited cell. Inherited from TreeListCellValueEventArgs.
Handled	Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
Node	Gets the processed node. Inherited from TreeListNodeEventArgs.
OldValue	Gets the cell's previous value.
OriginalSource	Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent	Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Row	Gets the processed row. Inherited from TreeListNodeEventArgs.
Source	Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.
Value	Gets or sets the processed cell's value. Inherited from TreeListCellValueEventArgs.

Remarks

The CellValueChanging event is raised each time a cell's value is being edited (an end-user types or deletes a character, chooses a value from the dropdown list, etc.). The event provides a parameter whose properties can be used to identify the node and column containing the edited cell, and its current value.

The CellValueChanging event does not fire when changing cell values in code. Handle this event if you need to provide an immediate response to end-user actions. For instance, you may close the editor and focus the next cell when the edit value's length exceeds the predefined value.

After a cell's value has been changed, the TreeListView.CellValueChanged event is raised.

To learn more, see Obtaining and Setting Cell Values.