A data view can be configured to display a row number when records are presented to the users. The row number will represent the index of a data row with current filters and sort order applied.
![image image](/blog/2012/02/row-number-in-data-views/image02.png)
If the filters or sort order has changed then the same record will have a different logical row number.
![image image](/blog/2012/02/row-number-in-data-views/image04.png)
If you want to enable the row number in a data view then select the data view in Designer and check the Show Row Number option.
![image image](/blog/2012/02/row-number-in-data-views/image06.png)