GridViewBase.ShowingEditor Event

Allows you to prevent an end user from activating editors of individual cells.

Namespace: DevExpress.Xpf.Grid

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

Declaration

public event ShowingEditorEventHandler ShowingEditor
Public Event ShowingEditor As ShowingEditorEventHandler

Event Data

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

Property Description
Cancel Gets or sets the value indicating whether to prevent showing the editor.
Column Gets a column, for which an event has been raised.
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.
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 data row for which an event has been raised.
RowHandle Gets or sets the row handle, for which an event has been raised. Inherited from EditorEventArgsBase.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.
Value Gets the edit value stored in the editor, for which an event has been raised. Inherited from EditorEventArgsBase.

Remarks

The ShowingEditor event is raised before the focused cell's editor is activated allowing you to cancel the action and prevent its value from being edited. To do this, set the event parameter's Cancel property to false.

The following code sample shows how to prevent end users from editing values of individual cells. In this example, end users are not allowed to change a product's Price if the product is discontinued:

void ShowingEditor(object sender, ShowingEditorEventArgs e) {
    if (e.Column.FieldName != "UnitPrice") return;
    e.Cancel = (bool)grid.GetCellValue(e.RowHandle, "Discontinued");
} 
See Also