title: how can an .ASPX page get its file system path?
body: <p>I have a page something.aspx, with associated codebehind something.aspx.cs.  In that codebehind, I want to know the filesystem location of something.aspx.  Is there any convenient way to get it?</p>
  
  <p>Update: I got several excellent answers, which unfortunately didn't work because of something else crazy I'm doing.  I'm encoding some additional information on the URL I pass in, so it looks like this:</p>
  
  <p><a href="http://server/path/something.aspx/info1/info2/info3.xml" rel="nofollow noreferrer">http://server/path/something.aspx/info1/info2/info3.xml</a></p>
  
  <p>The server deals with this OK (and I'm not using querystring parameters to work around some other code that I didn't write).  But when I call Server.MapPath(Request.Url.ToString()) I get an error that the full URL with the 'info' segments isn't a valid virtual path.</p>