Question

在Search_Click中lstBox的来源是List<string>在btnStats_Click lstBox的来源il List<Genre>

在我将DisplayMemberPath =“Name”添加为listBox属性后，Search_Click不会输出任何内容。

是否只能在btnStats_Click上将DisplayMemberPath =“Name”应用于lstBox？

public class Genre
{
    public string Name { get; set; }
    public int Count { get; set; }
    public double Size { get; set; }
    public string Drive { get; set; }
}

private void Search_Click(object sender, RoutedEventArgs e)
{
    var path = Constants.allMoviesPath;

    var ext = new List<string> { @".txt", @".ini", @".exe", @".mob", @".srt", @".ass" };

    lstBox.ItemsSource = Directory.GetFiles(path, "*" + SearchString + "*", SearchOption.AllDirectories)
                .Where(f => !ext.Contains(System.IO.Path.GetExtension(f)))
               .Select(f => System.IO.Path.GetFileNameWithoutExtension(f))
               .ToList();
}

private void btnStats_Click(object sender, RoutedEventArgs e)
{
    lstBox.ItemsSource = FileLists.MoviesCountSizeStats();
}

MoviesCountSizeStats（）的返回类型为List<Genre>

<ListBox
    x:Name="lstBox"
    Background="CadetBlue"
    FontFamily="Consolas"
    DisplayMemberPath="Name"
    FontSize="14"
    FontWeight="DemiBold"
    ItemContainerStyle="{DynamicResource _ListBoxItemStyle}"
    MouseDoubleClick="lstBox_MouseDoubleClick" />

Answer 1

这很容易。如果您想更改lstBox.DisplayMemberPath ...只需更改它。

private void Search_Click(object sender, RoutedEventArgs e)
{
    var path = Constants.allMoviesPath;

    var ext = new List<string> { @".txt", @".ini", @".exe", @".mob", @".srt", @".ass" };

    lstBox.ItemsSource = Directory.GetFiles(path, "*" + SearchString + "*", SearchOption.AllDirectories)
                .Where(f => !ext.Contains(System.IO.Path.GetExtension(f)))
               .Select(f => System.IO.Path.GetFileNameWithoutExtension(f))
               .ToList();

    //  Null when it should be null
    lstBox.DisplayMemberPath = null;
}

private void btnStats_Click(object sender, RoutedEventArgs e)
{
    lstBox.ItemsSource = FileLists.MoviesCountSizeStats();


    //  "Name" when it should be "Name"
    lstBox.DisplayMemberPath = "Name";
}

仅在某些点击时显示DisplayMemberPath

1 个答案: