javascript - Calling Web Service with Querystring -

i want auto-fill first , last name fields if user has email existing in database. there web service returns user's information using following querystring: http://localhost:5555/person/search?text=user@email.com tap service , utilize it.

i'm trying write method create query string , see if email exists in database. if email exists, assign first , last name values appropriate text-box fields.

current method -- know method incorrect, i've got

public class person : page {     public void getpersoninformation(object sender, eventargs e)     {       string querystring = request.querystring["text"];       if (querystring != null)       {           // should put here...       }     } } 

question: how can method check database email? concern how assign first , last name values appropriate fields if email exist.

current form

additional info assume user types email exists. once user presses tab, auto-fill first , last name fields if email exists in database.

resource used: http://www.dotnetperls.com/querystring