Profile object empty when not logged in :/

Well i got this User.aspx page.

it shows user details like name , age etc..

it works when user loged in , but it shows empty when user not logged in. now problem is another user1  wanna see user2 's page and it doesnt show anything :/

 
Namelbl.Text = "<b>Name:</b> " + Profile.FirstName;
Citylbl.Text = "<b>City:</b> " + Profile.City;
Agelbl.Text = "<b>Age:</b> " + Profile.BirthDate;
Genderlbl1.Text = "<b>Gender:</b> &quo ...