Invalidates the specified region of a View (adds it to the control's update region, which will be repainted during the next paint operation), and causes a paint message to be sent to the grid control.
public virtual void InvalidateRect( Rectangle r )
Public Overridable Sub InvalidateRect( r As Rectangle )
A System.Drawing.Rectangle structure representing the region to invalidate.
To force immediate repainting of invalidated regions (before other processing takes place), call the Update method of the grid control after invalidation.
View regions are automatically invalidated when required. However, you may need to invalidate View regions manually if you implement some specific functionality. For instance, this may be needed when you custom paint View elements. Refer to the Manually Invalidating Controls help topic for details on when manual invalidation is required and how it can be performed.
Detail pattern Views do not contain data and they are never displayed within XtraGrid. So, the InvalidateRect member must not be invoked for these Views. The InvalidateRect member can only be used with real Views that are displayed within the Grid Control. The real Views with which an end-user interacts at runtime can be accessed using the following methods.
- GridControl.MainView - returns the top most View in a grid;
- GridControl.FocusedView - returns the focused View;
- GridControl.DefaultView - returns the currently maximized View;
- the sender parameter of View specific events;
- GridView.GetDetailView - returns a detail clone View for a specific master row.