Question

我正在尝试从URL中获取参数但我收到错误。这是我的代码：

protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
    {
        base.OnNavigatedTo(e);
        string str = "";
        if (NavigationContext.QueryString.TryGetValue("data", out str))
        {
            MessageBox.Show("k");
        }
    }


private void aktualizuj(object sender, DateTimeValueChangedEventArgs e)
{
        var btndate = sender as DatePicker;
        NavigationService.Navigate(new Uri("dieta.xaml?data=" + btndate.Value.Value.Date.ToString(),UriKind.Relative));
}

我收到的错误如下：

    A first chance exception of type 'System.MissingMethodException' occurred in mscorlib.ni.dll
If there is a handler for this exception, the program may be safely continued.

Answer 1

嗯，看起来你的调试器变得古怪。

NavigationService.Navigate(new Uri("dieta.xaml?data=" +
    btndate.Value.Value.Date.ToString(),UriKind.Relative));

应抛出异常：

Navigation is only supported to relative URIs that are fragments, or begin with '/', or which contain ';component/'. Parameter name: uri

所以你应该把它改成

NavigationService.Navigate(new Uri("/dieta.xaml?data=" +
    btndate.Value.Value.Date.ToString(),UriKind.Relative));

如果您要使用UriKind.Relative

C＃WP8获取带参数的页面URL地址

1 个答案: