C# Winforms フォルダ選択ダイアログ

private void Button1_Click(object sender, EventArgs e)
{
    var dialog = new FolderSelectDialog
    {
        InitialDirectory = Environment.CurrentDirectory,
        Title = "Select a folder to import music from"
    };
    if (dialog.Show(Handle))
    {
        this.textBox1.Text = dialog.FileName;
    }
}

private void Button2_Click(object sender, EventArgs e)
{
    using (var ofd = new OpenFileDialog() {
        FileName = "Folder Selection",
        Filter = "Folder|.",
        ValidateNames = false,
        CheckFileExists = false,
        CheckPathExists = true,
    })
    {
        if (ofd.ShowDialog() == DialogResult.OK)
        {
            this.textBox1.Text = Path.GetDirectoryName(ofd.FileName);
        }
    }
}