Display ‘Please Wait’ popup
This procedure explains how to add a ‘Please wait’ screen to an ASP.net application.
By default at server process (e.g. saving a request) you only see a progress bar in the status bar. 
. If it’s a long running process you might not see any update for a longer time, and users might think that the application stopped, is already finished or did not even start because they did not press the correct button. This might result in double clicks on the Save button or closure of the browser window without completion.
Therefore it is better to display message in the middle of the screen so the user is aware that there is something going on. Current procedure describes how to disable all existing web controls (buttons etc.), coloring all areas in dark gray (fade out) and display an animated circle next to a “Please wait” text.
