It will generate a 'XAP' file called ' XapContent.xap'.

'XapContent' is also a Silverlight project.

The ' XapLoader.xap' file will be hosted in the 'XapWebHost' web application. It will generate a 'XAP' file called ' XapLoader.xap'.

'XapWebHost' is an ASP.NET web application to host the Silverlight application.

This example Visual Studio solution has three projects:

If you are new to Silverlight, Scott Guthrie's blog is the default place for you to get started. This article assumes the readers having some basic experiences with Silverlight development. The Visual Studio solution that comes with this article is developed in Visual Studio 2010 and Silverlight 4. This article introduces a method to download and use 'XAP' packages on demand in Silverlight with a Visual Studio example. If some parts of the Silverlight application are changed, we can choose to redeploy only the 'XAP' packages affected by the changes.The browsers can download only the Silverlight contents needed by the application in real time, which may potentially save the download time and improve the user experience.But separating the resources into different 'XAP' files can potentially provide some advantages in some other cases:

In many cases, putting the resources into a single 'XAP' file should be the correct choice. They can also choose to put these resources into separate 'XAP' packages and let the browsers download them as needed. When developing a Silverlight application, developers can put all the ' User Controls' and other resources in a single 'XAP' package. To run a Silverlight application, browsers need to download the 'XAP' packages generated by the Silverlight projects. This article introduces a method to download and use 'XAP' packages on demand in Silverlight.

Xap files download