TokenEditorBehavior.TokensChanging Event

Occurs when a token is about to be added to or removed from the edit field.

Namespace: DevExpress.Xpf.Editors

Assembly: DevExpress.Xpf.Core.v20.2.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Core, DevExpress.Wpf.Core

Declaration

C#

public event EventHandler<TokensChangingEventArgs> TokensChanging

VB.NET

Public Event TokensChanging As EventHandler(Of TokensChangingEventArgs)

Event Data

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

Property	Description
AddedTokens	Gets the list of tokens that have been added. Inherited from TokensChangedEventArgs.
IsCancel	Cancels the token modification.
RemovedTokens	Gets the list of tokens that have been removed. Inherited from TokensChangedEventArgs.

Remarks

Handle the TokensChanging event to prevent a user from adding or removing tokens.

The TokensChanging event is fired when the new token is added by entering data in the editor’s edit field.