Question

Just Downloaded the WP7 SDK yestarday – And I’m new to Silver light – and Application development in general.

I’m just simply trying to Direct my user to a different page, but I have a NullRefernceException Error occur on a Line Of Code.
The Stupid thing – the code above it is exactly the same – yet doesn’t throw the error?

if (myISO.DirectoryExists("Logs") && myISO.DirectoryExists("DataStore"))
{
     NavigationService.Navigate(new Uri("Sign-in.xaml", UriKind.Relative));
}
else
{
     NavigationService.Navigate(new Uri("Welcome.xaml", UriKind.Relative));
     //Above Line Causes Exception^
}

Also I get an NullRefernceException in App.xaml.cs – which I haven’t even changed – it WAS working – now it doesn’t :

PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;

Answer 1

it should be like this

NavigationService.Navigate(new Uri("/Page1.xaml", UriKind.Relative));

where is your “/” ?