Is there any way to get previous page url in silve

问题:

Is there any way to get previous page url in silverlight navigation application. I am using navigation Service.

回答1:

There is no way to get the navigation history, you can store it by yourself by listening the navigation service event NavigationService.Navigated (or Frame.Navigated for frame navigation).

private List<Uri> _navigationHistory = new List<Uri>();

void  onNavigated(object sender, NavigationEventArgs e)
{
    _navigationHistory.Add(e.Uri);
}

private Uri getBackUri()
{
        return _navigationHistory.Count > 1
            ? _navigationHistory[_navigationHistory.Count - 2]
            : null;
}

回答2:

There is a way through which you can get URL of previous page before postback.

if (!IsPostBack)
{
 Session["PrvPageUrl"] = Request.UrlReferrer.ToString();
}

It might be help you.