GridColumn.Validate Event

Enables you to validate the active editor's value.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v14.2.dll

Declaration

C#

public event GridCellValidationEventHandler Validate

VB.NET

Public Event Validate As GridCellValidationEventHandler

Event Data

The Validate event's handler receives an argument of the GridCellValidationEventArgs type. The following properties provide information specific to this event:

Property	Description
Cell	Gets or sets the CellValue object consisting of information about the cell being processed.
CellValue	Gets the cell's old valid value.
Column	Gets a column that owns the 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 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.
UpdateSource	Gets an object that invoked the BaseEdit.Validate event. Inherited from ValidationEventArgs.
Value	Gets the editor's new value. Inherited from ValidationEventArgs.

Remarks

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 Validating Editors.

Examples