Reset password from xml in ASP.Net

Hi Mudassir bro,

I got struck in a problem. I need ur help.

I have an xml file stored in local folder which has login credentials.

Now in Login page..There's a Forget Password button. So when user clicks forget password he gets redirected  to Resetpassword.aspx page. Here I have to reset the password based on username, email and security question. May I know how to reset the password from xml file. I am a new to xml.

Ps help me.