C#将文件路径从列表框中的文件传递到dataconext

Question

我正在用一个文件填充一个列表框。这可以通过两种方法来完成，由按下按钮启动的打开文件对话框命令和将操作拖放到列表框中。我想将文件路径（对于列表框中的文件）传递给我的代码的其他区域。比如读取列表框中文件的DataContext。基本上我希望在填充列表框时自动更新文件路径。如果我没有正确解释自己或提供足够的信息，我是 C# 新手，非常抱歉。填充我的列表框（名为 FilePathBox）和“运行”按钮的代码如下：

private void BrowseButton_Click(object sender, RoutedEventArgs e)
{
    var openFileDialog = new Microsoft.Win32.OpenFileDialog();
    //openFileDialog.Multiselect = true;
    openFileDialog.Filter = "Csv files(*.Csv)|*.Csv|All files(*.*)|*.*";
    openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

    if (openFileDialog.ShowDialog())
    {
        FilePathBox.Items.Clear();

        foreach (string filename in openFileDialog.FileNames)
        {
            ListBoxItem selectedFile = new ListBoxItem();

            selectedFile.Content = System.IO.Path.GetFileNameWithoutExtension(filename);
            selectedFile.ToolTip = filename;                    
            FilePathBox.Items.Add(selectedFile);
        }
    }          
}

private void FilesDropped(object sender, DragEventArgs e)
{
    if (e.Data.GetDataPresent(DataFormats.FileDrop))
    {
        FilePathBox.Items.Clear();

        string[] droppedFilePaths = e.Data.GetData(DataFormats.FileDrop, true) as string[];

        foreach (string droppedFilePath in droppedFilePaths)
        {
            ListBoxItem fileItem = new ListBoxItem();

            fileItem.Content = System.IO.Path.GetFileNameWithoutExtension(droppedFilePath);
            fileItem.ToolTip = droppedFilePath;
            FilePathBox.Items.Add(fileItem);
        }
    }  
}

private void RunButton_Click(object sender, RoutedEventArgs e)
{
    DataContext = OldNewService.ReadFile(@"C:\Users\Documents\Lookup Table.csv");
}

Answer 1

参考下面的代码。

<StackPanel>            
        <ListBox x:Name="fileList" Height="100" Drop="fileList_Drop" DisplayMemberPath="Name" AllowDrop="True"/>
        <Button Content="Browse" Click="Button_Click"/>
        <Rectangle/>
    </StackPanel>
 public partial class MainWindow : Window
{
    ObservableCollection<FileInfo> lst = new ObservableCollection<FileInfo>();
    public MainWindow()
    {
        InitializeComponent();
        fileList.ItemsSource = lst;

    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
        if ((bool)dlg.ShowDialog())
        {
            FileInfo fi= new FileInfo(dlg.FileName);
            lst.Add(fi);
        }
    }

    private void fileList_Drop(object sender, DragEventArgs e)
    {
        string[] droppedFilePaths = e.Data.GetData(DataFormats.FileDrop, true) as string[];

        foreach (string droppedFilePath in droppedFilePaths)
        {
            FileInfo fi = new FileInfo(droppedFilePath);
            lst.Add(fi);
        }
    }
}