Question

我想将目录中的文件列表绑定到列表框。

这是我想尝试到目前为止的代码片段，lstFiles是一个ListBox，我想将Files属性绑定到。但ListBox是空的。请帮忙。

    public partial class Form1 : Form, INotifyPropertyChanged
    {
        private IList<FileInfo> _files = new List<FileInfo>();
        public IList<FileInfo> Files
        {
            get
            {
                return this._files;
            }
            set
            {
                if (value != this._files)
                {
                    this._files = value;
                    NotifyPropertyChanged("Files");
                }
            }
        }
        public Form1()
        {
            InitializeComponent();

            lstFiles.DataSource = Files;
            lstFiles.DataBindings.Add("Name", Files, "Files");
            lstFiles.DisplayMember = "Name";
        }

        private void btnStartPath_Click(object sender, EventArgs e)
        {
            var dialog = new FolderBrowserDialog();
            var result = dialog.ShowDialog();
            if (result == DialogResult.OK)
            {
                txtStartPath.Text = dialog.SelectedPath;
            }
        }

        private void btnFind_Click(object sender, EventArgs e)
        {
            Files = new DirectoryInfo(txtStartPath.Text).EnumerateFiles().ToList();
        }

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }
        #endregion
}

Answer 1

我没有看到在代码中将文件添加到列表中

DirectoryInfo dinfo = new DirectoryInfo(@"C:\Directory");

文件类型，

_files  = dinfo.GetFiles("*.txt");

然后

foreach( FileInfo file in Files )
{
   listbox1.Items.Add(file.Name);
}

Answer 2

您必须设置valuemember属性。我试过这个例子：

        IList<FileInfo> myList = new List<FileInfo>();
        FileInfo test1 = new FileInfo(@"G:\test.xls");
        myList.Add(test1);

        listBox1.DisplayMember = "Name";
        listBox1.ValueMember = "FullName";
        listBox1.DataSource = myList;

这可以按预期工作：）

Winforms Listbox数据绑定到目录中的文件列表

2 个答案: