Navigation Service or NavigationContext is always null

Question

Hi I am trying to use NavigationContext.Querystring to  get the Parameters, but I am getting the Object is always null. Is there any implementation specfic rules for getting the same. I am using UriMaper for mapping as shown. Is there any other way to get the Parameter of Querystring in Silverlight 4.0

<navigation:Frame.UriMapper>

<uriMapper:UriMapper>

<uriMapper:UriMapping Uri="/{pageName}" MappedUri="/{pageName}.xaml"/>

</navigation:Frame.UriMapper>

Answer 1

Please check this blog post, download the source code and compare your application with it to find the cause:

http://blogs.microsoft.co.il/blogs/alex_golesh/archive/2009/04/02/silverlight-3-quick-tip-6-navigation-framework-and-uri-routing.aspx

Answer 2

Can I have any example on SL4 as I am developing the same in SL4

Answer 3

Here it is, sample in sl4:

http://cid-18f192401f835d41.skydrive.live.com/self.aspx/.Public/NavigationApp.zip

Please check the ProductDetail.xaml.

Answer 4

Alternatively, u could at look at this video by Tim Heuer

http://www.silverlight.net/learn/videos/silverlight-videos/navigation-framework/

Sharker Khaleed Mahmud

Answer 5

Ok I resolved it the Control needs to be in Silverlight Page where we can get the NavigateTo event

Answer 6

Thanks a lot. It solved my problem.  

Answer 7

Just had the problem myself but I was checking the NavigationContext before the page has fully loaded which caused it to be null, I just had to check the context in the loaded event