GridViewBase.ValidateCell Event

Enables you to specify whether the focused cell's data is valid, and whether the cell's editor can be closed.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v20.1.dll

Declaration

public event GridCellValidationEventHandler ValidateCell
Public Event ValidateCell As GridCellValidationEventHandler

Event Data

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

Property Description
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.

Remarks

The ValidateCell event occurs before the focused cell's modified value is posted to a data source, allowing to manually validate its new value.

The focused cell's new value is returned by the ValidationEventArgs.Value property. To indicate that the new value is invalid, set the ValidationEventArgs.IsValid property to false.

See Also