Question

我是WPF的新手，遇到绑定问题，一直在寻找不同的解决方案，但没有任何帮助。有2个Observable Collections，我希望被绑定到listview的不同列。 XAML代码：

<GroupBox Header="Search results" HorizontalAlignment="Left" Margin="10,0,0,0" VerticalAlignment="Top" Height="727" Width="739" FontFamily="Malgun Gothic" FontSize="24">
        <ListView x:Name="ListView1"  HorizontalAlignment="Left" Width="729" FontFamily="Malgun Gothic" FontSize="24" Background="{x:Null}" Margin="0,0,-2,0" ItemsSource="{Binding ElementName=Search, Path=Library}">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Song name" DisplayMemberBinding="{Binding Track}" Width="550"/>
                    <GridViewColumn Header="Artist" DisplayMemberBinding="{Binding Artist}" Width="170"/>
                </GridView>
            </ListView.View>
            <ListView.DataContext>
                <Classes:Library/>
            </ListView.DataContext>
            <Classes:Library Text=""/>
        </ListView>
    </GroupBox>

来自xaml.cs

    Library CallSearch = new Library();
    Playlist Songs = new Playlist();
    private void Button_Click_2(object sender, RoutedEventArgs e)
    {
            CallSearch.Text = textSearch.Text;
            CallSearch.Search();
    }

来自班级：

    private ObservableCollection<string> track = new ObservableCollection<string>();
    private ObservableCollection<string> artist = new ObservableCollection<string>();
    public ObservableCollection<string> Track
    {
        get { return track; }
        set { track = value; }
    }
    public ObservableCollection<string> Artist
    {
        get { return artist; }
        set { artist = value; }
    }

在公共空间内：

            foreach (DirectoryInfo diNext in dirs)
            {
                foreach (FileInfo test in diNext.GetFileSystemInfos("*"+tb+"*"+".mp3", SearchOption.AllDirectories))
                {
                    u.Read(test.FullName);
                    Track.Add(u.Title);
                    Artist.Add(u.Artist);
                }
            }

我缺少什么？

更新NIT： System.Windows.Data错误：40：BindingExpression路径错误：'对象'''库'（HashCode = 36404074）'上找不到'相册'属性。 BindingExpression：路径=相册; DataItem ='Library'（HashCode = 36404074）; target元素是'ListView'（Name ='ListView1'）; target属性是'ItemsSource'（输入'IEnumerable'） System.Windows.Data错误：40：BindingExpression路径错误：'对象'''库'（HashCode = 40706798）'上找不到'Track'属性。 BindingExpression：路径=跑道; DataItem ='Library'（HashCode = 40706798）; target元素是'TextBlock'（Name =''）; target属性是'Text'（类型'String'） System.Windows.Data错误：40：BindingExpression路径错误：'object'''Library'（HashCode = 40706798）上找不到'Artist'属性。 BindingExpression：路径=艺术家; DataItem ='Library'（HashCode = 40706798）; target元素是'TextBlock'（Name =''）; target属性是'Text'（类型'String'）

Answer 1

不要使用两个脱节的集合，而是创建一个包含两个属性的模型类

public class Album
{
 public string Track{get;set;}
 public string Artist{get;set;}
}

并创建此类的ObservableCollection

public ObservableCollection<Album> Albums{get;set;}

foreach (DirectoryInfo diNext in dirs)
{
      foreach (FileInfo test in diNext.GetFileSystemInfos("*"+tb+"*"+".mp3", SearchOption.AllDirectories))
      {
                    u.Read(test.FullName);
                    Album album = new Album;
                    album.Track = u.Title;
                    album.Artist = u.Artist;
                    Albums.Add(album);
       }
 }

现在将此Collection绑定到ListView

  <ListView x:Name="ListView1"  HorizontalAlignment="Left" Width="729" FontFamily="Malgun Gothic" FontSize="24" Background="{x:Null}" Margin="0,0,-2,0" ItemsSource="{Binding  Path=Albums}">
        <ListView.View>
            <GridView>
                <GridViewColumn Header="Song name" DisplayMemberBinding="{Binding Track}" Width="550"/>
                <GridViewColumn Header="Artist" DisplayMemberBinding="{Binding Artist}" Width="170"/>
            </GridView>
        </ListView.View>
        <ListView.DataContext>
            <Classes:Library/>
        </ListView.DataContext>
        <Classes:Library Text=""/>
    </ListView>

将2个ObservableCollections绑定到Listview

1 个答案: