Silverlight添加MIME type

When hosting a Silverlight application, your web server must be configured to allow requests for the XAP file type. This file type is included by default in IIS 7, provided you’re using Windows Server 2008 or Windows Vista with Service Pack 1. If you have Windows Vista without Service Pack 1, you have an earlier version of IIS, or you have another type of web server, you’ll need to add a file type that maps the .xap extension to the MIME type application/x-silverlight-app. For IIS instructions, see http://learn.iis.net/page.aspx/262/silverlight.