Occurs when the object represented by the ListEditor's focused row must be validated.
Namespace: DevExpress.ExpressApp.Editors
Assembly: DevExpress.ExpressApp.v19.1.dll
public event EventHandler<ValidateObjectEventArgs> ValidateObjectPublic Event ValidateObject As EventHandler(Of ValidateObjectEventArgs)The ValidateObject event handler receives an argument of the ValidateObjectEventArgs type. The following properties provide information specific to this event.
| Property | Description |
|---|---|
| ErrorText | Specifies the message that must be displayed in a UI when the object being checked is not valid. |
| Object | Provides access to the object that is being manipulated. |
| Valid | Specifies whether the object that is being checked is valid or not. |
Handle this event to perform custom validation of the objects represented by an editable List View. The object that is being validated can be accessed via the handler's Object parameter. Check whether it is valid, and if it is not, set the ValidateObjectEventArgs.Valid to false and the ValidateObjectEventArgs.ErrorText to the message that must be displayed in a UI. In this instance, it will be impossible to change the focused row until the entered data is corrected.