http://galratner.com/blogs/net/archive/2009/11/27/how-to-get-mime-type-of-files-extensions-using-your-registry.aspxGetting mime types of files uploaded to your website is easy. You can use the HttpPostedFile.ContentType Property, but, what happens when HttpPostedFile is not available to you? You can use your computer’s registry in order to look at a file’senCommunityServer 2008.5 SP2 (Debug Build: 40407.4157)