C# 选择文件 和 选择文件夹 对话框

<pre name="code" class="csharp">        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog fileDialog = new OpenFileDialog();
            fileDialog.Multiselect = true;
            fileDialog.Title = "请选择文件";
            fileDialog.Filter = "所有文件(*.*)|*.*";
            if (fileDialog.ShowDialog() == DialogResult.OK)
            {
                string[] names = fileDialog.FileNames;

                foreach(string file in names)
                {
                    MessageBox.Show("已选择文件:" + file, "选择文件提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

                }

            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog dialog = new FolderBrowserDialog();
            dialog.Description = "请选择文件路径";

            if (dialog.ShowDialog() == DialogResult.OK)
            {
                string foldPath = dialog.SelectedPath;
                DirectoryInfo theFolder = new DirectoryInfo(foldPath);
                FileInfo[] dirInfo = theFolder.GetFiles();
                //遍历文件夹
                foreach (FileInfo file in dirInfo)
                {
                    MessageBox.Show(file.ToString());
                }
            }
        }