How to download internet(http) file in SL4 out of browser project?

Question

my function open a internet page in pop-up browser before to download a file. But after I change to SL4 and out-of-browser, seems the pop-up is no longer working

System.Windows.Browser.HtmlPage.PopupWindow(_uri, "Report", null);

and then I also tried HttpWebRequest and WebBrowser. Seems they both won't ask the user to download the file or not, but just stay silence.

Answer 1

Finally, I sloved this by checking when OOB mode, use Shell command for the http URL, then a download box will prompt directly.