New Post: Prism-MEF: how to navigate to view in different module using UriQuey

        var contact = this.contactsView.CurrentItem as Contact;
        if (contact != null && !string.IsNullOrEmpty(contact.EmailAddress))
        {
            uriQuery.Add(ToQueryItemName, contact.EmailAddress);
        }

        var uri = new Uri(ComposeEmailViewName + uriQuery.ToString(), UriKind.Relative);
        this.regionManager.RequestNavigate(RegionNames.MainContentRegion, uri);