WEB-BROWSER control

Hello,

I want to show the contents of different kind of files on my application window. To accomplish that I am using the web-browser control. Opening a web page or a jpg file works fine. When opening a tif file however Windows photo viewer opens in a new window. The same thing occurs when opening a pdf file using the pdf viewer which comes with Windows 8. After installing Acrobat Reader that problem is solved. Acrobat reader opens within my web-browser control.

Does anyone recognize this problem?