Silverlight找不到页面错误

发布于 2024-08-11 17:47:08 字数 855 浏览 0 评论 0原文

我已经开始了一个新项目（以重构一些代码），但无法弄清楚为什么我不断收到“找不到页面/索引”错误。代码工作正常，直到我使用 add 方法（在任何集合类型上）。所以我不认为导航有问题，而是我的 IndexViewModel 类有问题。

公共部分类索引：页 { 私有 IndexViewModel _vm；

    public Index()
    {
        InitializeComponent();
        _vm = new IndexViewModel();

...

public class IndexViewModel //: ViewModelBase
    {                                         
        public SortableCollectionView Rows {get;set;}          

        public IndexViewModel()
        {
            // generate some dummy data
            Random rand = new Random();
            for (int i = 0; i < 200; i++)
            {
                Row row = new Row();
                row["stuff"] = s_names[rand.Next(s_names.Length)];

                **Rows.Add(row);**

            }
        }

原文

I have started a a new project (to refactor some code), and just can't work out why I keep getting "Can't find page /Index" error. The code works fine until I use an add method (on any collection type). So I don't think there is a problem with the navigation, but an issue with my IndexViewModel class.

public partial class Index : Page
{
private IndexViewModel _vm;

    public Index()
    {
        InitializeComponent();
        _vm = new IndexViewModel();

...

public class IndexViewModel //: ViewModelBase
    {                                         
        public SortableCollectionView Rows {get;set;}          

        public IndexViewModel()
        {
            // generate some dummy data
            Random rand = new Random();
            for (int i = 0; i < 200; i++)
            {
                Row row = new Row();
                row["stuff"] = s_names[rand.Next(s_names.Length)];

                **Rows.Add(row);**

            }
        }

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

被你宠の有点坏 2024-08-18 17:47:09

看起来您从未更新过 Rows 变量。

Rows = new SortableCollectionView();

要得到实际的错误，您可以使用从我的答案中复制的技巧另一个问题：

要查看问题所在，您需要对 MainPage.xaml.cs 进行一项更改：

// If an error occurs during navigation, show an error window
private void ContentFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
{
    Exception ex = e.Exception;

    while (ex.InnerException != null)
    {
        ex = ex.InnerException;
    }

    e.Handled = true;
    ChildWindow errorWin = new ErrorWindow(ex);
    errorWin.Show();
}

在启动时进行更改后应用程序中，您应该看到异常而不是发生异常的页面。

Looks like you never new up your Rows variable.

Rows = new SortableCollectionView();

To get to the actual error you can use this trick copied from my answer on another question:

To see what the issue is you need to make one change to your MainPage.xaml.cs:

// If an error occurs during navigation, show an error window
private void ContentFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
{
    Exception ex = e.Exception;

    while (ex.InnerException != null)
    {
        ex = ex.InnerException;
    }

    e.Handled = true;
    ChildWindow errorWin = new ErrorWindow(ex);
    errorWin.Show();
}

Once you've made that change when you start the application you should see the exception instead of the page where the exception occurred.

回复收藏 0 原文