PropertyGridControl.CellValueChanging Event

Fires when the updated cell value is about to be posted. Set the e.Cancel property to true to cancel the posting operation.

Namespace: DevExpress.Xpf.PropertyGrid

Assembly: DevExpress.Xpf.PropertyGrid.v23.2.dll

NuGet Package: DevExpress.Wpf.PropertyGrid

Declaration

C#

public event CellValueChangingEventHandler CellValueChanging

VB.NET

Public Event CellValueChanging As CellValueChangingEventHandler

Event Data

The CellValueChanging event's data class is CellValueChangingEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets whether the event should be canceled. Inherited from CancelRoutedEventArgs.
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.
IsReset	Gets whether the cell’s property value is about to be reset when a user click the Reset context menu’s item. In this case, the CellValueChanging event argument’s NewValue and OldValue are equal.
NewValue	Gets a new value that will be assigned to the cell.
OldValue	Gets the cell’s previous value that will be replaced with the new 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 row whose value is changing.
Source	Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

The event data class exposes the following methods:

Method	Description
InvokeEventHandler(Delegate, Object)	When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object)	When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.