vb.net获取u盘信息的简单介绍

vb.net如何获取电脑中的所有盘符

首先使用 System.IO.DriveInfo.GetDrives()获取System.IO.DriveInfo，存入ds()

然后遍历ds，获取各个信息部分。

Dim ds() As System.IO.DriveInfo = System.IO.DriveInfo.GetDrives()

For i As Integer = 0 To ds.Length - 1

TextBox1.Text = TextBox1.Text + ds(i).DriveType.ToString + " " '驱动器类型

TextBox1.Text = TextBox1.Text + ds(i).Name + " " '盘符（驱动器名）

TextBox1.Text = TextBox1.Text + ds(i).IsReady.ToString + " " '是否就绪

If ds(i).IsReady = True Then

TextBox1.Text = TextBox1.Text + ds(i).VolumeLabel + " " '卷标

TextBox1.Text = TextBox1.Text + ds(i).TotalSize.ToString + " " '驱动器容量

TextBox1.Text = TextBox1.Text + ds(i).TotalFreeSpace.ToString '驱动器可用容量

End If

TextBox1.Text = TextBox1.Text + vbNewLine

Next

相关问答

Q1: vb.net编程接受U盘准备卸载用的windows消息 DBT_DEVICEQUERYREMOVE总是没反应，据说是因为默认注册的消息里

在我的XP+VB2010环境下，测试U盘插入拔出，没有问题：

Private WM_DEVICECHANGE As Integer = H219

Public Enum WM_DEVICECHANGE_WPPARAMS As Integer

DBT_CONFIGCHANGECANCELED = H19

DBT_CONFIGCHANGED = H18

DBT_CUSTOMEVENT = H8006

DBT_DEVICEARRIVAL = H8000

DBT_DEVICEQUERYREMOVE = H8001

DBT_DEVICEQUERYREMOVEFAILED = H8002

DBT_DEVICEREMOVECOMPLETE = H8004

DBT_DEVICEREMOVEPENDING = H8003

DBT_DEVICETYPESPECIFIC = H8005

DBT_DEVNODES_CHANGED = H7

DBT_QUERYCHANGECONFIG = H17

DBT_USERDEFINED = HFFFF

End Enum

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

If m.Msg = WM_DEVICECHANGE Then

Select Case m.WParam

Case WM_DEVICECHANGE_WPPARAMS.DBT_DEVICEARRIVAL

MsgBox("USB device is just plugged in!")

Case WM_DEVICECHANGE_WPPARAMS.DBT_DEVICEREMOVECOMPLETE

MsgBox("USB device is just taken out")

End Select

End If

MyBase.WndProc(m)

End Sub

Q2: 如何在vb中查找哪个盘符是U盘？

Dim S As String, I As Integer, X

I = 67

Do

X = GetDriveType(Chr(I) + ":")

Debug.Print Chr(I)

If X = 2 Then Exit Do

I = I + 1

Loop

Print "U盘盘符是："; Chr(I)

Q3: 关于 VB.NET 2008中U盘的插拔

一下代码将自动完成检测：

Imports System.IO

Public Class Form1

Public Const WM_DEVICECHANGE = H219

Public Const DBT_DEVICEARRIVAL = H8000

Public Const DBT_DEVICEREMOVECOMPLETE = H8004

Dim DriveLetter As String

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

If m.Msg = WM_DEVICECHANGE Then

Select Case m.WParam

Case DBT_DEVICEARRIVAL

Dim s() As DriveInfo = DriveInfo.GetDrives

For Each drive As DriveInfo In s

If drive.DriveType = DriveType.Removable Then

DriveLetter = drive.Name.ToString()

Debug.WriteLine("U盘 :" DriveLetter "已插入.")

End If

Next

Case DBT_DEVICEREMOVECOMPLETE

Dim s() As DriveInfo = DriveInfo.GetDrives

For Each drive As DriveInfo In s

If drive.ToString = DriveLetter Then Exit Sub

Next

Debug.WriteLine("U盘:" DriveLetter "已卸载！")

End Select

End If

MyBase.WndProc(m)

End Sub

End Class

Q4: 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.

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

Next

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