C#获取文件夹对话框

首先要说明一下:

添加引用:   System.Design 

此文件在下面的位置 

C:\Program Files\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Design.dll

有些人说在添加引用的面板中并找不到这个引用.这是由于你的目标框架设置错误

在 解决方案管理器上  右键 "属性" --> 应用程序 --> 目标框架 修改为 .Net Framework 4.0  (没有那个client  )

这样你再在添加引用面板中就可以找到这个引用了.

添加这两个引用

using System.Windows.Forms;
using System.Windows.Forms.Design;

==================新建一个FolderDialog类 ==============
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.Design;
   public class FolderDialog : FolderNameEditor
    {
        FolderNameEditor.FolderBrowser fDialog = new FolderNameEditor.FolderBrowser();
        public FolderDialog()
        {
        }
        public DialogResult DisplayDialog()
        {
            return DisplayDialog("请选择一个文件夹");
        }
        public DialogResult DisplayDialog(string description)
        {
            fDialog.Description = description;
            return fDialog.ShowDialog();
        }
        public string Path
        {
            get { return fDialog.DirectoryPath; }
        }
        ~FolderDialog() { fDialog.Dispose(); }
    }
--------------调用--------------------
            FolderDialog openFolder = new FolderDialog();
            if (openFolder.DisplayDialog() == DialogResult.OK)
            {
                textBox1.Text = openFolder.Path.ToString();
            }
            else
            {
                textBox1.Text = "你没有选择目录";
            }
            DirectoryInfo dirInfo = new DirectoryInfo(textBox1.Text);
            FileInfo[] files = dirInfo.GetFiles();
            foreach (FileInfo filename in files)
            {
                listBox1.Items.Add(filename);
            }

===================打开指定的文件夹路径===================

            string openPath = @“C:\test\demo”;
            if (Directory.Exists(openPath))
                System.Diagnostics.Process.Start(openPath);
            else
                MessageBox.Show("打开的文件路径无效");

===================打开指定文件的路径======================

                 string openPath = @"H:\test\Data\userSys.cs";
                 if (File.Exists(openPath)) 
                       System.Diagnostics.Process.Start(openPath);  

                 else

                       MessageBox.Show("指定文件不存在");