如何配置OpenFileDialog来选择文件夹？

OpenFileDialog openFileDialog1 = new OpenFileDialog();

openFileDialog1.FileName = "";
openFileDialog1.CheckFileExists = false;

openFileDialog1.CheckPathExists = true;

openFileDialog1.ValidateNames = false;

if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
    string folderPath = Path.GetDirectoryName(openFileDialog1.FileName);
    MessageBox.Show("您选择的文件夹路径是：" + folderPath);
}

FolderBrowserDialog folderBrowserDialog1 = new FolderBrowserDialog();
if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
{
    string folderPath = folderBrowserDialog1.SelectedPath;
    MessageBox.Show("您选择的文件夹路径是：" + folderPath);
}