Enables you to validate the active editor's value.
public event GridCellValidationEventHandler Validate
Public Event Validate As GridCellValidationEventHandler
The Validate event's data class is GridCellValidationEventArgs. The following properties provide information specific to this event:
|CancellationToken||Gets an object that notifies that the Update operation should be canceled. Inherited from GridRowValidationEventArgs.|
|Cell||Gets the CellValue object consisting of information about the cell being processed.|
|CellValue||Gets the cell's old valid value.|
|Column||Gets the column that contains the processed cell.|
|Culture||Gets the culture related to the validation. Inherited from ValidationEventArgs.|
|ErrorContent||Gets or sets an object that describes the validation error. Inherited from ValidationEventArgs.|
|ErrorType||Gets or sets the error icon type. Inherited from ValidationEventArgs.|
|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. Inherited from ValidationEventArgs.|
|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 processed row. Inherited from GridRowValidationEventArgs.|
|RowHandle||Gets the processed row's handle. Inherited from GridRowValidationEventArgs.|
|Source||Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.|
|UpdateRowResult||Gets or sets a task that allows you to asynchronously post changes to an underlying data source (database). Inherited from GridRowValidationEventArgs.|
|UpdateSource||Gets the action that caused the validation. Inherited from ValidationEventArgs.|
|UseCancellationToken||Gets or sets whether the Update operation can be canceled. Inherited from GridRowValidationEventArgs.|
|Value||Gets the editor's value. Inherited from ValidationEventArgs.|
When an end-user modifies the focused cell's value and tries to save the changes (by pressing the ENTER key or moving focus to another cell), the grid validates a new value. First, this value is validated by the editor itself. Then, the column's Validate event is raised, allowing you to manually validate the cell's value. Note this event is not fired when changing cell values in code.
To learn more, see Cell Validation.