Have you ever needed to add a sequential number to a report’s rows. Well, it is surprising easy to do!
All you need to do is add a textbox into the detail section of your report and set the control’s Control Source property to ‘=1’ and then set the Running Sum property to either ‘Over Group’ or ‘Over All’ depending on what you are trying to achieve. The properties should be as shown below.

Close and save your changes and run your report. That’s it! It is that simple.
thanks with the help
thanks
Thanks a lot its helpful