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 End-User Documentation

BaseEdit.Validate Event

Enables you to validate the editor's value.

Namespace:DevExpress.Xpf.Editors
Assembly:DevExpress.Xpf.Core.v17.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type ValidationEventArgs containing data related to this event.

The following ValidationEventArgs properties provide information specific to this event.
Property Description
Culture Gets the culture related to the validation.
ErrorContent Gets or sets an object that describes the validation error.
ErrorType Gets or sets 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.
IsValid Gets or sets a value specifying whether the value is valid.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible System.Windows.RoutedEventArgs.Source adjustment by a parent class.
RoutedEvent Gets or sets the System.Windows.RoutedEventArgs.RoutedEvent associated with this System.Windows.RoutedEventArgs instance.
Source Gets or sets a reference to the object that raised the event.
UpdateSource Gets the action that caused the validation.
Value Gets the editor's value.

Expanded Remarks

Handle the Validate event to manually validate the editor (e.g. to limit the range of valid values, implement a custom conditional validation mechanism, etc).

To specify when the editor should automatically validate its value, use the ValidateOnEnterKeyPressed and ValidateOnTextInput properties. To manually force the editor's validation, call the DoValidate method.

Note

The Validate event is not raised if the editor's CausesValidation property is set to false.

To learn more, see Input Validation.

Expanded Example

The following example shows how to handle the Validate event to provide a custom validation procedure.

The image below shows the result:

Expanded See Also

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