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假设路径为C:\abc
代码:
Public Class Form1 Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load Dim Files As ObjectModel.ReadOnlyCollection(Of String) = My.Computer.FileSystem.GetFiles("C:\abc") Dim FileSize As Long, FileName As String = Nothing Dim oFileSize As Long For Each File As String In Files oFileSize = My.Computer.FileSystem.GetFileInfo(File).Length If oFileSize FileSize Then FileSize = oFileSize FileName = File End If Next Dim ListN As ListViewItem = New ListViewItem(My.Computer.FileSystem.GetName(FileName)) ListN.SubItems.Add(oFileSize " byte") ListN.SubItems.Add(My.Computer.FileSystem.GetFileInfo(FileName).Extension " 文件") ListN.SubItems.Add(FileName) ListView1.Items.Add(ListN) End SubEnd Class
详见源代码!!
IO.Directory.GetDirectories("文件夹") '获取文件夹中的所有子文件夹路径。
IO.Directory.GetFiles("文件夹") '获取文件夹下所有文件的路径。
'子文件夹的子文件夹,用递归;
预先准备三个图标文件,用于树型控件中显示磁盘符号和文件夹的图像之用。
1、窗体上添加控件如下:
组合框控件 ComboBox1,树型控件 TreeView1,列表框控件 ListBox1,图像列表控件 ImageList1。
选中TreeView1,设置其ImageList属性为ImageList1。
2、设置属性
选中图像列表控件 ImageList1,在属性窗口里,选中属性Images,单击三个小点按钮,出现图像集合编辑器窗口,单击[添加按钮],一一把准备好的图标文件进行添加,注意先后次序,如果不符合要求可以通过上下移动按钮重新改变次序。完成后单击[确定]。
运行图如下:
完整代码如下:
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'添加系统所有磁盘目录符号
For Each MyDrive As String In Environment.GetLogicalDrives()
ComboBox1.Items.Add(MyDrive)
Next
'显示第一个磁盘符号
ComboBox1.Text = ComboBox1.Items(0)
End Sub
'递归过程添加目录树
Public Sub AddDirectory(ByVal strFatherPath As String, ByVal strPath As String, ByVal nodeFather As TreeNode)
Dim i As Integer
Dim Mynode As New TreeNode
'先添加本目录
Mynode.Text = Strings.Replace(strPath, strFatherPath "\", "", , 1)
'为节点指定未被选中时显示的图标
Mynode.ImageIndex = 1
'为节点指定被选中时显示的图标
Mynode.SelectedImageIndex = 2
nodeFather.Nodes.Add(Mynode)
Application.DoEvents()
Try
Dim str() As String = Directory.GetDirectories(strPath)
'递归遍历该目录的子文件夹
For i = 0 To str.GetUpperBound(0)
AddDirectory(strPath, str(i), Mynode)
Next
Catch ex As Exception
Debug.WriteLine(ex.Message)
End Try
Mynode = Nothing
End Sub
'根据给出的盘符添加目录树
Private Sub AddRootDirectory(ByVal DiscSymbol As String)
Dim Nynode As New TreeNode
'先把磁盘盘符添加到树中
TreeView1.Nodes.Clear()
Nynode.ImageIndex = 0
Nynode.Text = DiscSymbol
Nynode.SelectedImageIndex = -1
TreeView1.Nodes.Add(Nynode)
Dim i As Integer
'获取磁盘根目录下的文件夹
Dim str() As String = Directory.GetDirectories(DiscSymbol "\")
For i = 0 To str.GetUpperBound(0)
'调用递归过程遍历该文件夹里的所有子文件夹,并添加到树型控件
AddDirectory(DiscSymbol, str(i), Nynode)
Next
Nynode = Nothing
End Sub
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
'根据磁盘符号的变更,显示根目录里的文件
ListBox1.Items.Clear()
For Each MyFile As String In System.IO.Directory.GetFiles(ComboBox1.Text)
ListBox1.Items.Add(MyFile)
Next
'根据磁盘符号的变更,重新显示目录树
Dim DiscSymbol As String
DiscSymbol = Microsoft.VisualBasic.Left(ComboBox1.Text, Len(ComboBox1.Text) - 1)
Call AddRootDirectory(DiscSymbol)
End Sub
'递归过程根据子目录寻找上级目录名--从而构成完整的目录路径
Private Sub AllPath(ByVal ThisNode As TreeNode, ByRef MyPathName As String)
If ThisNode.Level 1 Then
'该节点层数大于1,其父节点不是磁盘根目录
MyPathName = ThisNode.Parent.Text "\" MyPathName
Dim MyNode As TreeNode = ThisNode.Parent
Call AllPath(MyNode, MyPathName)
Else
'该节点层数等于1,其父节点就是磁盘根目录
MyPathName = ComboBox1.Text MyPathName
End If
End Sub
Private Sub TreeView1_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect
'为了搜索选中的节点对应目录的文件,需要组成全路径
Dim MyAllPathName As String = TreeView1.SelectedNode.Text
Dim MyNode As TreeNode = TreeView1.SelectedNode
If TreeView1.SelectedNode.Level = 0 Then
'如果选中的是根节点
MyAllPathName = ComboBox1.Text
Else
'如果选中的是非根节点,调用递归过程组成全路径
Call AllPath(MyNode, MyAllPathName)
MyAllPathName = MyAllPathName "\"
End If
'根据路径,搜索文件名并显示
ListBox1.Items.Clear()
For Each MyFile As String In System.IO.Directory.GetFiles(MyAllPathName)
ListBox1.Items.Add(MyFile)
Next
End Sub
End Class
'把下面的目录改成你要遍历的目录
Dim MyDir = "C:\Windows"
Dim MyInfo = MyDir + "目录下的所有文件包括:"
For Each MyFile In System.IO.Directory.GetFiles(MyDir)
MyInfo += Environment.NewLine + MyFile
Next
Me.RichTextBox1.Text =MyInfo
给你一个提示吧!呵呵,剩下的要自己思考哦!
Path:是初始目录的路径
Private Sub WriteArray(ByVal Path As String)
'写入数组代码在这里,直接将Path写到数组就行了。
Dim dir As New IO.DirectoryInfo(Path)
For Each d As IO.DirectoryInfo In dir.GetDirectories
WriteArray(d.FullName) '递归
Next
End Sub
如果子目录较多那么递归会比较费时间,在调用递归前加入application.doevent就行了,这样在应对大递归时不会死机。
至于数组嘛使用 arraylist 最好了。
回答补充:
把递归去掉就行了啊!
vb.net:
Dim path = System.IO.Directory.GetFiles("D:\Log\abc", "*.txt", SearchOption.AllDirectories):搜索该路径下的所有txt类型的目录及子目录
path.AddRange(path)
Dim _RecordInfo As String
Dim _Reader As StreamReader
_Reader = New StreamReader(file, System.Text.Encoding.Default):'以Default编码的形式读取file文件(文件写入的编码要与读取的编码一致)