vb.net 二进制读取文件

VB.NET打开二进制文件用fileopen完成，打开二进制文件的形式为：openmode.binary

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读取二进制文件用的是fileget方法，写入二进制文件用的是fileput方法。

应用示例：将一批随机数保存在一个dat文件中，然后再将其提取到文本框中。

二进制文件的读写一批随机数的存取，程序为：

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim x, i, fn As Integer

Dim s As String = ""

fn = FreeFile()

FileOpen(fn, "d:\data.dat", OpenMode.Binary)

For i = 1 To 8

x = Int(Rnd() * 100)

s = s + Str(x)

FilePut(fn, x)

Next

FileClose(fn)

TextBox1.Text = s

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

Dim x, fn As Integer

Dim s As String = ""

fn = FreeFile()

FileOpen(fn, "d:\data.dat", OpenMode.Binary)

Do While Not EOF(fn)

FileGet(fn, x)

s = s + Str(x) + " "

Loop

FileClose(fn)

TextBox1.Text = s

End Sub

win7下vb.net 如何获取硬盘序列号

Private Function 硬盘序列号() As String

Try

Dim myInfo As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HARDWARE\DEVICEMAP\Scsi\Scsi Port 0\Scsi Bus 1\Target Id 0\Logical Unit Id 0")

硬盘序列号 = Trim(myInfo.GetValue("SerialNumber"))

Catch

Try

Dim myInfo As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HARDWARE\DEVICEMAP\Scsi\Scsi Port 1\Scsi Bus 1\Target Id 0\Logical Unit Id 0")

硬盘序列号 = Trim(myInfo.GetValue("SerialNumber"))

Catch

硬盘序列号 = ""

End Try

End Try

End Function

试下，如果返回为空，则表示失败。

在本机win8win8.1有效，不过好像在有些机器上没用。

VB获取电脑机器码

很难达到你的要求的,VB好像是获取不到硬盘的物理序列号的,只能获取到某一个分区的序列号.不过可以调用其它的程序写的获取硬盘物理序列号的dll来获取,CPU的序列号我用的是wmi.VB本来对底层方面就不是很好

引用api获得硬盘序列号

Private Declare Function MymachineC Lib "kernel32" Alias "GetVolumeInformationA" (ByVal lpRootPathName As String, ByVal lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Long, lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, ByVal nFileSystemNameSize As Long) As Long

Private Sub Form_Load()

Dim AA, 硬盘序列号, Maxlen, Sysflag As Long: Dim VolName, FsysName As String

AA = MymachineC("c:\", VolName, 256, 硬盘序列号, Maxlen, Sysflag, FsysName, 256)

msgbox "C硬盘序列号-机器码啦-(16制): " Hex(硬盘序列号)

End Sub

文章名称：vb.net读取机器码 vb读取数据写入access
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