title: Click on button to pop-up new window with passing URL in .net c# web application
body: <p>I'm new in .net C#, just a question here. how can I click a button then it will pop-up a new window to display a page?</p>
  
  <p>example:
  If I have a page test.aspx, how can I code in .net c# web application so that it will pop-up a new window to display this page?</p>