Retrieve the old value and New Value

Question

Dear Techie, 

 

                     Im having form contain (Textbox) Name, Email, Mobile. (DropDownlist) Gender and Place.

 

1.I will enter the new form.

2.Edit the form and Update the form 

3.Important While Editing the old values will retrieve and new values will stored into the database (sql Server)

 

 

How we can retrieve the old values and new values in the form?

 

 

Thanks, 

Vasanth.