在UWP页面之间传递参数

NavigationService.Navigate(typeof(TargetPage), parameter);

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    var parameter = e.Parameter;
    // 处理参数
}

Frame.Navigate(typeof(TargetPage), "param=value");

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    var parameter = e.Parameter as string;
    if (!string.IsNullOrEmpty(parameter))
    {
        var query = new Uri(parameter).Query;
        var paramValue = HttpUtility.ParseQueryString(query).Get("param");
        // 处理参数
    }
}

(App.Current as App).Parameter = parameter;

var parameter = (App.Current as App).Parameter;
// 处理参数