Question

VB2010中怎样打开文件夹？

也是通过Commanddialog来实现，但只能选择文件不能选择文件夹，
从网上寻找方法，但貌似是VB6的方法，VB2010不能用= =
下面是我从网上找到的代码，求大神帮忙改写一下
Option Explicit

Private Type BrowseInfo
hWndOwner As Long
pIDLRoot As Long
pszDisplayName As Long
lpszTitle As Long
ulFlags As Long
lpfnCallback As Long
lParam As Long
iImage As Long
End Type
Const BIF_RETURNONLYFSDIRS = 1
Const MAX_PATH = 260
Private Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal hMem As Long)
Private Declare Function lstrcat Lib "kernel32" Alias "lstrcatA" (ByVal lpString1 As String, ByVal lpString2 As String) As Long
Private Declare Function SHBrowseForFolder Lib "shell32" (lpbi As BrowseInfo) As Long
Private Declare Function SHGetPathFromIDList Lib "shell32" (ByVal pidList As Long, ByVal lpBuffer As String) As Long

Public Function BrowseForFolder(Optional sTitle As String = "请选择文件夹") As String
Dim iNull As Integer, lpIDList As Long, lResult As Long
Dim sPath As String, udtBI As BrowseInfo

With udtBI
.hWndOwner = 0 ' Me.hWnd
.lpszTitle = lstrcat(sTitle, "")
.ulFlags = BIF_RETURNONLYFSDIRS
End With
lpIDList = SHBrowseForFolder(udtBI)
If lpIDList Then
sPath = String$(MAX_PATH, 0)
SHGetPathFromIDList lpIDList, sPath
CoTaskMemFree lpIDList
iNull = InStr(sPath, vbNullChar)
If iNull Then
sPath = Left$(sPath, iNull - 1)
End If
End If

BrowseForFolder = sPath
End Function

Private Sub Command1_Click()
MsgBox BrowseForFolder()
End Sub

Answer 1

在VB.NET里使用 OpenFileDialog 组件。
在工具箱的“对话框”组里，双击 OpenFileDialog，添加组件成功。

添加一个按钮，代码只要2行。
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
OpenFileDialog1.Filter = "所有文件 (*.*)| *.*"
OpenFileDialog1.ShowDialog()
End Sub
End Class

Answer 2

VB6不能直接选择文件夹，需要用到API，VB.NET就很简单了，FolderBrowserDialog控件就是用于选择文件夹的：

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        FolderBrowserDialog1.ShowDialog()
        MsgBox(FolderBrowserDialog1.SelectedPath)
    End Sub

追问

找到了O(∩_∩)O谢谢