The name 'xxx'does not exist in the current context

Question

Hi , I created a Sliverlight 4 Business Application ( BussinessApplication1.csproj & BussinessApplication1.Web.csproj ). In BussinessApplication1.csproj I have 2 silverlight pages , EmployeeListing.xaml ( in a folder named Views ) and a CustomerRegistrationWindow.xaml in the root . From the code behind file of CustomerRegistrationWindow.xaml cannot refer to datasources defined in EmployeeListing.xaml. I get the error: The name 'CustomerDataSource'does not exist in the current context. Can anybody help ?

Thank you very much