[2008] Timer In Dot Net

I create an application that checks an excel file on a specific path.

if file not found then it generate message that file not found.

Next i want that if excel file not found then system checks for excel file after

30 Mins. (if timer is require so plz tell me about timer usage).

thanks

Just add a Timer to your form in the designer and set its Interval to the number of milliseconds in 30 minutes. Double-click it to create a Tick event handler and add code to check for your file. You can then just Start and Stop the Timer as needed. Note that once you Start it it will keep Ticking on the specified Interval until you Stop it.