给定参数时 Frame.Navigate 失败

Question

When I attempt to send parameters along with Frame.Navigate method it fails with "NullReferenceException".

This is the method with frame.navigate method

    private void remotesList_ItemClick(object sender, ItemClickEventArgs e)
    {
        string args = JsonConvert.SerializeObject(e.ClickedItem.ToString());
        this.Frame.Navigate(typeof(RemoteContent),args);

    }

This is the code on receiving page

        protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        string args = JsonConvert.DeserializeObject<string>((string)e.Parameter);
        base.OnNavigatedTo(e);
    }

Is there anything wrong with the code or any other way to send arguments with navigate method?

Answer 1

For anyone running into this same issue. The problem was that OnNavigatedTo runs after the initialization method (public RemoteContent() in my case). I tried to use the parameter given in the Frame.Navigate inside the initialization method of RemoteContent. Because OnNavigatedTo was called after this, the value was used before it could be assigned.