fetch data from database according to the selected id in c#

Question

hii users,

i am currently working on a webpage (Registration page)..and in that i have some fields in a table ,they are - (Name,Comp_Name,User_Name,Email_Id,Password,User_Image,Category,Status) and 1 id textbox. i want the id to fetch the data of the row that has been entered in the id field on its textchange event. for example.if i type 101 in id and enter it,then the records of 101 should get fetched from the database.plz help me out ASAP