Occurs before the ASPxGridListEditor.Grid's cell has been repainted in a UI. Enables the appearance settings of individual cells to be changed.
The event handler receives an argument of the DevExpress.ExpressApp.Editors.CustomizeAppearanceEventArgs type.
The ASPxGridListEditor implements the ISupportAppearanceCustomization interface and supports appearance customization via the Conditional Appearance module. The ISupportAppearanceCustomization interface exposes a single member - the CustomizeAppearance event.
This event is not intended to be handled from your code.