TextBox1_TextChanged Index to fill all Columns and Row

Question

UserId
Password
FName
LName
Address
Country	Select Country INDIA USA USSR UK
Contact
Email
Gender	Male Female
Education	BCA MCA M.Tech

 

 Pls tail Me friend How to work textbox selectindex  change event .Just Like a Enter UserId than all textbox and check box check and fill automatic

 pls suggest the code and logic plss.....