vb.net获取盘符 vbdirectory获取文件夹名称

VB.NET检测插入U盘时执行某段代码，并能获取U盘盘符

以下内容为网络提供,但我自己验证可行,供你参考.

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Imports System.IO

Public Class Form1

Public Const WM_DEVICECHANGE = H219

Public Const DBT_DEVICEARRIVAL = H8000

Public Const DBT_CONFIGCHANGECANCELED = H19

Public Const DBT_CONFIGCHANGED = H18

Public Const DBT_CUSTOMEVENT = H8006

Public Const DBT_DEVICEQUERYREMOVE = H8001

Public Const DBT_DEVICEQUERYREMOVEFAILED = H8002

Public Const DBT_DEVICEREMOVECOMPLETE = H8004

Public Const DBT_DEVICEREMOVEPENDING = H8003

Public Const DBT_DEVICETYPESPECIFIC = H8005

Public Const DBT_DEVNODES_CHANGED = H7

Public Const DBT_QUERYCHANGECONFIG = H17

Public Const DBT_USERDEFINED = HFFFF

Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)

If m.Msg = WM_DEVICECHANGE Then

Select Case m.WParam

Case WM_DEVICECHANGE

Case DBT_DEVICEARRIVAL 'U盘插入

ComboBox1.Items.Clear()

Dim s() As DriveInfo = DriveInfo.GetDrives

For Each drive As DriveInfo In s

If drive.DriveType = DriveType.Removable Then

ListBox1.Items.Add("U盘已插入！盘符为:" + drive.Name.ToString())

ComboBox1.Items.Add(drive.Name)

End If

BtnWrite.Enabled = True

BtnRead.Enabled = True

Case DBT_CONFIGCHANGECANCELED

Case DBT_CONFIGCHANGED

Case DBT_CUSTOMEVENT

Case DBT_DEVICEQUERYREMOVE

Case DBT_DEVICEQUERYREMOVEFAILED

Case DBT_DEVICEREMOVECOMPLETE 'U盘卸载

ListBox1.Items.Add("U盘卸载！")

BtnWrite.Enabled = False

BtnRead.Enabled = False

Case DBT_DEVICEREMOVEPENDING

Case DBT_DEVICETYPESPECIFIC

Case DBT_DEVNODES_CHANGED

Case DBT_QUERYCHANGECONFIG

Case DBT_USERDEFINED

End Select

End If

MyBase.WndProc(m)

End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

ListBox1.Items.Add("请您现在插入U盘至USB接口！")

End Sub

Private Sub BtnWrite_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnWrite.Click

If ComboBox1.Text = "" Then

MsgBox("请选择U盘盘符！", MsgBoxStyle.Exclamation, "Warn")

Else

Dim Writer As StreamWriter = Nothing

Try

Dim fileName As String = ComboBox1.Text + "Test.txt"

Writer = New StreamWriter(fileName)

Writer.WriteLine(InputBox("老四，请输入要保存的字符串", "输入信息", "Input then Test String! hehe!"))

MsgBox("Write to " + fileName + " Success!")

Catch ex As Exception

MsgBox(ex.Message, MsgBoxStyle.Critical, "Write 失败")

Finally

If Writer IsNot Nothing Then Writer.Close()

End Try

End If

End Sub

Private Sub BtnRead_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnRead.Click

If ComboBox1.Text = "" Then

MsgBox("请选择U盘盘符！", MsgBoxStyle.Exclamation, "Warn")

Else

Dim Reader As StreamReader = Nothing

Try

Dim fileName As String = ComboBox1.Text + "Test.txt"

Reader = New StreamReader(fileName)

MsgBox("Read from " + fileName + vbCrLf + Reader.ReadToEnd, MsgBoxStyle.Information, "Info")

Catch ex As Exception

MsgBox(ex.Message, MsgBoxStyle.Critical, "Read 失败")

Finally

If Reader IsNot Nothing Then Reader.Close()

End Try

End If

End Sub

End Class

VB.NET 怎样取得盘符并且知道它属于哪个磁盘

依次读出ds中每个项的VolumeLabel属性就可以了Dim ds() As System.IO.DriveInfods = System.IO.DriveInfo.GetDrives();

vb.net 磁盘文件列表，界面如图，在.net下如何实现？

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)

'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)

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)

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)

'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)

End Sub

End Class

vb(vb.net)能不能修改计算机中指定驱动器的盘符？我想在U盘插入时通过序列号识别指定设备并

Sub RenameVolume()

'利用Shell函数在命令提示符下执行Diskpart命令的脚本，并存入日志文件

'达到替换逻辑盘符的目的

'在WindowsXp系统下测试成功

'获取临时文件路径

Temp = Environ("TEMP") "\"

'获取命令提示符路径

Cmd = Environ("ComSpec")

'设置脚本文件和日志文件路径

ScriptFile = Temp "DiskpartScript.txt"

ScriptLog = Temp "DiskpartScript.log"

'回车符和换行符

vbLfCr = vbLf vbCr

'脚本文件内容

'选择卷e

'移除盘符e

'分配盘符m

'退出Diskpart

ScriptTxt = "select volume e" vbLf vbCr _

"Remove letter = e" vbLf vbCr _

"assign letter = m" vbLf vbCr _

"exit" vbLf vbCr

'打开脚本文件并读取内容

Open ScriptFile For Output As #1

Print #1, ScriptTxt

Close #1

'打开错误处理

On Error Resume Next

'删除原有日志文件

Kill ScriptLog

'关闭错误处理

On Error GoTo 0

'执行脚本

ShellTxt = Cmd " /c ""diskpart.exe /S " ScriptFile " " ScriptLog """"

Shell ShellTxt

'打开错误处理

On Error Resume Next

Err.Number = 0

'打开日志文件并读取内容，因日志文件存取速度慢，必须以锁定方式打开，否则会出错

Open ScriptLog For Input Lock Read Write As #1

DoEvents

Loop Until Err.Number = 0

'关闭错误处理

On Error GoTo 0

'日志文件中含有中文字符，必须以InputB函数以字节方式读取，否则长度会超出

LogTxt = InputB(LOF(1), #1)

Close #1

'转换以字节方式读取的日志文件内容

LogTxt = StrConv(LogTxt, vbUnicode)

'如果日志中出现两次成功，则认为执行成功，否则认为失败

If Len(LogTxt) - Len(Replace(LogTxt, "成功", "", 1)) = 4 Then

MsgBox "盘符替换成功！"

Else

MsgBox "盘符替换失败！"

End If

'删除临时文件

Kill ScriptFile

Kill ScriptLog

End Sub

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vb.net 磁盘文件列表，界面如图，在.net下如何实现？

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网站建设知识

vb.net获取盘符 vbdirectory获取文件夹名称

VB.NET检测插入U盘时执行某段代码，并能获取U盘盘符

VB.NET 怎样取得盘符并且知道它属于哪个磁盘

vb.net 磁盘文件列表，界面如图，在.net下如何实现？

vb(vb.net)能不能修改计算机中指定驱动器的盘符？ 我想在U盘插入时通过序列号识别指定设备并

其他资讯

vb(vb.net)能不能修改计算机中指定驱动器的盘符？我想在U盘插入时通过序列号识别指定设备并