Tooltip

i have 12 images (4 columns * 3 rows) i want to display userdetails in tooltip of each one according to their image.... 
iam getting images from database but tooltip is displaying common to each column...here is my code
1st col is abc, 2nd col is xyz

    ds = ObjDA.GetImageUrlFromDataBase("abc");

            if (ds != null && ds.Tables[0].Rows.Count > 0)
               
           Image1.ImageUrl = Image1.ResolveClientUrl("~/User photos/" + ds.Tables[0].Rows[0][0].ToString() + "/" + ds.Tables[0].Rows[0][1].ToString());
          Image5.ImageUrl = Image5.ResolveClientUrl("~/User photos/" + ds.Tables[0].Rows[1][0].ToString() + "/" ...