Fetching data in grid view Edit Mode

Question

Dear I have a data into my table like that 


Table columns(AnswerID       TargetValue        Question ID   TFM         TFW                TFB                   TFG)
Table values
(1                  4                              1           NULL        NULL              NULL                 NULL)
(1                  4                              2           NULL        5                   NULL                 NULL)


I want to get all the rows on gridview row editing and bind the textbox with all the rows from the database ,
The Question is Which data control is best and how to access each row each column programatically and bind a textbox/label to it ...