How to make query string non editable?

Hello,

In my application when a user enters a roll no say 123 and press view button a new window open which shows the report of the member 123 . However on the top it displays the url which also shows the parameter
like ..... . aspx?parametername= xyz&secondparameter= abc

I want this url be readonly...ie non editable.. how to do this?

I am using following code to redirect user to display required report :

  ScriptManager.RegisterClientScriptBlock(this, typeof(Page), "Test", "javascript:window.open('MyPage.aspx?report_name=MyReport&roll_number=" + roll.Text + "');", true);

Thanks!!

Best Regards,
Rohan Laghate