Issue associated with url routing

I am using url routing in asp.net Web site.On the button click i was given the url route in the response.redirect() method.Page redirects to the correct Page. but issue here the url showing is http://localhost:1665/Sample.Website/Tests/Home.aspx?ReturnUrl=%2fSample.Website%2fHome..I expectsthe url http://localhost:1665/Sample.Website/Home....What is the issue arise here? Is this issue due to login? ...