An integer value specifying the zero-based index of the panel amongst visible panels in the zone.
Use the VisibleIndex property to control where the panel is displayed amongst other panels within the zone. To get and set a panel's visible index on the client side, use the ASPxClientDockPanel.GetVisibleIndex and ASPxClientDockPanel.SetVisibleIndex methods, respectively.
The VisibleIndex property can be used to obtain a panel at runtime via the ASPxClientDockZone.GetPanelByVisibleIndex method of the owner zone on the client side.
The VisibleIndex property is in effect, provided that only the panel is visible and docked in a zone.