Labels from back end appears during open and save file dialog

I have a open and file save dialog which I use to open and save file. There are also some labels in the application. During the time a file is open or saved, the file open /save dialog becomes blurred by the background labels. Is there any way to prevent this?
The attached pic is given as an example to explain the dilemma.

The reason for that is that the application is not being repainted properly while you are executing the open and/or save operations. Try calling the form's Refresh method before doing the work to force a repaint.