vb.net检测盘符的简单介绍

怎么解决VB辨识移动硬盘盘符的问题

Set fso = CreateObject("scripting.filesystemobject")

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Set disks = fso.Drives

For Each disk In disks '枚举磁盘

Set ID = fso.GetDrive(fso.GetDriveName(disk))

If ID.drivetype = 1 And disk.IsReady = True Then '如果是可移动磁盘

Msgbox ID.DriveLetter ":\" '读出盘符

End If

Next

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判断盘符是否存在

可以像脚本一样，创建一个FSO对象。

吧一下代码稍微按照你的方法修改一下再使用即可。

idr="C:" '要判断的盘符

s=0

Set fso = CreateObject("Scripting.FileSystemObject")

Set drs = fso.Drives

For Each dr in drs

if dr=idr then s=1

Next

if s=1 then

msgbox "存在"

else

msgbox "错误！盘符不存在"

end if

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

vb检测是否存在指定盘符

还有一种方法哦.

首先在Form中增加一个Drive控件

当H盘或更多的磁盘增加时,分区数将大于6个,即:A,C,D,E,F,G,(H)

输入代码如下:

Private

Sub

form_load()

Timer1.Enabled

=

True

Timer1.Interval

=

500

Timer2.Enabled

=

False

Timer2.Interval

=

500

Drive1.Visible

=

False

End

Sub

Private

Sub

Timer1_Timer()

Dim

a

As

Integer

Drive1.Refresh

a

=

Drive1.ListCount

If

a

6

Then

Form1.Show

Timer2.Enabled

=

True

Timer1.Enabled

=

False

End

If

End

Sub

Private

Sub

Timer2_Timer()

Dim

a

As

Integer

Drive1.Refresh

a

=

Drive1.ListCount

If

a

=6

Then

Form1.Hide

Timer1.Enabled

=

True

End

If

End

Sub

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