大家好

每当我运行这个程序时，我总是会收到上面的错误，并烦扰我为什么。

我执行了 Step Into 并发现当我点击将对象添加到集合时发生异常(在下面的代码中标记)。关于可能导致此问题的任何想法？

Img 和 Category 类是带有 inotify 接口(interface)的普通 ol 类，而 Movies 类有一个 Observable 集合接口(interface)。

无论如何，这是有问题的代码......

        public void LoadMovieLibrary( string libraryfile , Movies obj)
    {
        try
        {
            var libraryXML = XElement.Load( libraryfile );
            if ( libraryXML != null )
            {
                IEnumerable<XElement> movies = from element in libraryXML.Descendants( "movie" ) select element;
                foreach ( XElement movie in movies )
                {
                    ObservableCollection<Category> categoryGroup = new ObservableCollection<Category>();
                    IEnumerable<XElement> categories = from element in movie.Descendants( "category" ) select element;
                    foreach ( XElement category in categories )
                    {
                        categoryGroup.Add(
                            new Category(
                                int.Parse( category.Attribute( "id" ).Value ) ,
                                category.Attribute( "name" ).Value
                                )
                            );
                    }

                    ObservableCollection<Img> imgGroup = new ObservableCollection<Img>();
                    IEnumerable<XElement> imgs = from element in movie.Descendants( "image" ) select element;
                    foreach ( XElement img in imgs )
                    {
                        imgGroup.Add(
                            new Img(
                                img.Attribute( "type" ).Value ,
                                img.Attribute( "url" ).Value
                                )
                            );
                    }
                    try
                    {
                        obj.Add( // <= this is where it breaks
                            new Movie(
                                movie.Element( "name" ).Value ,
                                int.Parse( movie.Element( "id" ).Value ) ,
                                movie.Element( "imdbid" ).Value ,
                                movie.Element( "overview" ).Value ,
                                movie.Element( "tagline" ).Value ,
                                movie.Element( "released" ).Value ,
                                int.Parse( movie.Element( "runtime" ).Value ) ,
                                movie.Element( "trailer" ).Value ,
                                categoryGroup ,
                                imgGroup ,
                                movie.Element( "filename" ).Value
                                )
                            );
                    }
                    catch ( Exception exception )
                    {
                        MessageBox.Show( exception.Message , "Error" , MessageBoxButton.OK , MessageBoxImage.Error );
                    }
                }
            }
        }
        catch ( Exception exception )
        {
            MessageBox.Show( exception.Message , "Error" , MessageBoxButton.OK , MessageBoxImage.Error );
        }
    }

编辑:

非常感谢

原来我遗漏了一个下划线...

• movie.Element( "imdbid").Value

应该是

• movie.Element( "imdb_id").Value