Winform選擇目錄路徑與選擇文件路徑

using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsApplication1 {
public partial class SelectFolder: Form {
public SelectFolder() 
  {
    InitializeComponent();
  }
private void btnSelectPath_Click(object sender, EventArgs e) //彈出一個選擇目錄的對話框
 {
    FolderBrowserDialog path = new FolderBrowserDialog();
    path.ShowDialog();
    this.txtPath.Text = path.SelectedPath;
 }
private void btnSelectFile_Click(object sender, EventArgs e) //彈出一個選擇文件的對話框
 {
    OpenFileDialog file = new OpenFileDialog();
    file.ShowDialog();
    this.txtFile.Text = file.SafeFileName;
 }
}
}