Question

我的列表视图不会显示绑定到它的数据请求帮助我在这里给出了仅显示一个元素的例子我想知道我的代码有什么问题 pleese帮助我:(

这是我的代码：

<ListView ItemsSource="{Binding Path=MovieData}">
            <ListView.View>
                <GridView>
                    <GridViewColumn DisplayMemberBinding="{Binding Path=MovieId}" Header="Movie Id" />
                    <GridViewColumn DisplayMemberBinding="{Binding Path=Title}" Header="Title" />
                    <!-- Can Bind to complex subclass -->
                    <GridViewColumn Header="Movie(s)">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel>
                                    <ItemsControl ItemsSource="{Binding Path=MovieImage}">
                                        <ItemsControl.ItemsPanel>
                                            <ItemsPanelTemplate>
                                                <WrapPanel Orientation="Horizontal"/>
                                            </ItemsPanelTemplate>
                                        </ItemsControl.ItemsPanel>
                                    </ItemsControl>
                                </StackPanel>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                    <!-- Binding with data triggers -->

                    <!-- Simple binding -->
                    <GridViewColumn DisplayMemberBinding="{Binding Path=Recommendation}" Header="Recommendations" />

                </GridView>
            </ListView.View>
        </ListView>

这是我的班级电影：

public class Movie
    {
        public int MovieId { get; set; }
        public string Title { get; set; }
        public BitmapImage MovieImage { get; set; }
        public string Recommendation { get; set; }
        public Movie() { }

        public void CreateMovie(int i, string T , string R)
        {
            MovieId = i;
            Title = T;
            Recommendation = R;
            BitmapImage bi = new BitmapImage();
            bi.BeginInit();
            bi.UriSource = new        Uri(@"http://pierre.chachatelier.fr/programmation/images/mozodojo-original-image.jpg");
            bi.EndInit();
            MovieImage = bi;


        }

    }

这里我只添加一个元素进行测试：

 public List<Movie> MovieData= new List<Movie>();
 Movie m = new Movie();
 m.CreateMovie(5, "d", "s");
 MovieData.Add(m);

Answer 1

如果您在代码中使用View Model方法：

public class MovieViewModel
{
   public ObservableCollection<Movie> MovieData { get; set; }

   public MovieViewModel()
   {
      //the code you post
      MovieData = new ObservableCollection<Movie>();
      Movie m = new Movie();
      m.CreateMovie(5, "d", "s");
      MovieData.Add(m);
   }
}

并在你的窗口构造函数中：

private MovieViewModel vm;
public MyWindow()
{
   InitializeComponent();
   vm = new MovieViewModel();
   this.DataContext = vm;
}

编辑：我刚看了你的评论。如果您的列表永远不会更改并且只从数据库加载，您可以忽略我上面的答案并且：

从ListView中删除ItemsSource="{Binding Path=MovieData}" 你的XAML
为Listview Name="movieListView"

将您的代码更改为以下内容：

List<Movie> MovieData= new List<Movie>();
Movie m = new Movie();
m.CreateMovie(5, "d", "s");
MovieData.Add(m);
movieListView.ItemsSource = MovieData;

我的listView不显示我的数据

1 个答案: