c# - 如何在 wpf 中通过 MVVM 使用 ListView 绑定(bind)获取数据？

Question

我尝试使用 Silverlight ListView 生成 MVVM 模式。但是如果我绑定(bind)数据我的 silverlight 控件没有数据可视化。也没有错误返回。我看到空的 gridview。

型号:

MyData.cs

 public class MyData
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public string Price { get; set; }
        public string Author { get; set; }
        public string Catalog { get; set; }
    }

查看:

BookViewer.xaml

<UserControl x:Class="wpf.MVVM.Project.View.BookViewer"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Height="500" Width="700">
    <Grid>
        <StackPanel>
            <ListView Margin="8" Height="400" Width="650" ItemsSource="{Binding Path=MyData}">
         <ListView.View>
                    <GridView >
                        <GridViewColumn Header="ID" Width="Auto">
                            <GridViewColumn.CellTemplate>
                                <DataTemplate>
                                    <TextBlock Text="{Binding ID}" TextAlignment="Right" Width="40"/>
                                </DataTemplate>
                            </GridViewColumn.CellTemplate>
                        </GridViewColumn>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Name}" Header="Name" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Price}" Header="Price" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Author}" Header="Author" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Catalog}" Header="Catalog" Width="100"/>
                    </GridView>
                </ListView.View>
            </ListView>
        </StackPanel>
    </Grid>
</UserControl>

View 模型:

MyDataViewModel.cs

  public class MyDataViewModel
    {
       // public ObservableCollection<MyData> myData { get; set; }
        public List<MyData> GetData()
        {
            List<MyData> myDataList = new List<MyData>();
            myDataList.Add(new MyData() { ID = 1, Name = "yusuf karatoprak", Author = "Mike Gold", Price = "6.7 TL", Catalog = "IT" });
            myDataList.Add(new MyData() { ID = 2, Name = "yusuf karatoprak", Author = "Scott Gunitella", Price = "9.7 TL", Catalog = "IT" });
            myDataList.Add(new MyData() { ID = 3, Name = "yusuf karatoprak", Author = "David Hayden", Price = "11.7 TL", Catalog = "IT" });
            if (myDataList.Count > 0)
            {
                return myDataList;
            }
            else
                return null;
        }

    }

Window1.xaml

  public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            MyDataViewModel myDataCtx = new MyDataViewModel();
            MyDataDataView.DataContext = myDataCtx.GetData();
        }
    }

<Window x:Class="wpf.MVVM.Project.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="1000" Width="900"
    xmlns:views="clr-namespace:wpf.MVVM.Project.View" Loaded="Window_Loaded">
    <Grid>
        <views:BookViewer x:Name="MyDataDataView" Margin="0,0,0,0"></views:BookViewer>
    </Grid>
</Window>

我写了这些代码，但我看不到任何数据。请看下面:

我在 Debug模式下添加了 2 张图片:

Answer 1

据我所知，您将项目列表直接分配为您的数据上下文，因此您的路径应该是:

ItemsSource="{Binding}"

列表类上没有属性“MyData”，这是不需要在绑定(bind)中指定的数据类型，因为 WPF 框架将使用反射来搜索 MyData 上的所有属性