New Post: prism: problems with dynamically adding tabitems

Hi DCherubini,

thanks for your help.my VM is imported into View in the code behind like this:

 publicISubsystemDetailsViewModelVM get { return DataContext asISubsystemDetailsViewModel; }

 {get{return DataContext asISubsystemDetailsViewModel; }

set { DataContext = value; }

}

 so after applying your modification it through null exception (Object reference not set to an instance of an object.) at

FrameworkElement)newView).DataContextasSubsystemDetailsViewModel;

 in the second if block because no views already exist.

subsysdetailsViewModel = ((

[Import]