添加引用system.design.dll

//选择文件的保存路径
   DirBrowser   olderBrowserDlg=new   DirBrowser();  
   
   if (folderBrowserDlg.ShowDialog()==DialogResult.OK)
   {
    txtFilePath.Text = folderBrowserDlg.SelectedPath;
   }

//

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

//一般选择文件保存地址都用弹出对话框来进行选择
public class DirectorySelect : FolderNameEditor
{
 private FolderBrowser fb = new FolderBrowser();
 private string fDescription = "Choose Directory";
 private string fReturnPath = String.Empty;
 
 public string Description
 {
  set { fDescription = value; }
  get { return fDescription; }
 }
 
 public string ReturnPath
 {
  get { return fReturnPath; }
 }
 
 public DirectorySelect()
 {
 
 }
 
 private DialogResult RunDialog()
 {
  fb.Description = this.Description;
  fb.StartLocation = FolderBrowserFolder.MyComputer;
  fb.Style = FolderBrowserStyles.RestrictToSubfolders;
  //|FolderBrowserStyles.RestrictToDomain;
  return fb.ShowDialog();
 }
 
 public DialogResult ShowDialog()
 {
  DialogResult dRes = DialogResult.None;
  dRes = RunDialog();
  if (dRes == DialogResult.OK)
   this.fReturnPath = fb.DirectoryPath;
  else
   this.fReturnPath = String.Empty;
  return dRes;
 }
}

//一般选择文件保存地址都用弹出对话框来进行选择
//调用  
//DirBrowser   myDirBrowser=new   DirBrowser();  
//if(myDirBrowser.ShowDialog()!=DialogResult.Cancel)  
//MessageBox.Show(myDirBrowser.ReturnPath);  

public   class   DirBrowser   :   FolderNameEditor    
{    
 FolderBrowser   fb   =   new   FolderBrowser();    
 public   string   Description    
 {    
  set   {   _description   =   value;   }    
  get   {   return   _description;   }    
 }    
     
 public   string   ReturnPath    
 {    
  get   {   return   _returnPath;   }    
 }    
     
 public   DirBrowser()   {   }    
 public   DialogResult   ShowDialog()    
 {    
  fb.Description   =   _description;    
  fb.StartLocation   =   FolderBrowserFolder.MyComputer;    
  DialogResult   r   =   fb.ShowDialog();    
  if   (r   ==   DialogResult.OK)    
   _returnPath   =   fb.DirectoryPath;    
  else    
   _returnPath&n