wpf-devexpress-dot-xpf-dot-propertygrid-dot-propertygridcontrol-ce7cf455.md
Enables you to specify whether the focused cell’s data is valid, and whether the node can lose focus.
Namespace : DevExpress.Xpf.PropertyGrid
Assembly : DevExpress.Xpf.PropertyGrid.v25.2.dll
NuGet Package : DevExpress.Wpf.PropertyGrid
public event ValidateCellEventHandler ValidateCell
Public Event ValidateCell As ValidateCellEventHandler
The ValidateCell event's data class is ValidateCellEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| ErrorContent | Gets or sets an object that describes the validation error. |
| ErrorType | Gets the error type. |
| 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. |
| IsValid | Gets or sets a value specifying whether the value is valid. |
| NewValue | Gets a new value of the cell to be validated. |
| OldValue | Gets the previous value of the cell to be validated. |
| 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 information about a row that contains a validated cell. |
| Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
| ValidationException | Gets or sets the error message that is displayed if the cell has failed validation. |
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. |
Validation is performed within the ValidateCell event handler. This event is automatically fired when a cell is about to lose focus.
See Also