How to read the data of the row when clicked the button in the same row

[Einstein]

I have the data displayed in the grid as follows:StartDate Enddate Button16/3/2013 17/3/2013 Signup---> this is an ASP button18/3/2013 19/3/2012 Signup----> this is an ASP button20/3/2012 20/3/2012 Signup----> this is an ASP buttonI want asp.net with c# code when i clicked on first row signup button i want to get the data of the first row. If clicked on second row i want only the data of the second row startdate and end time. How can i acheive this? Please hep me in this regard.