vb.net本地 vbnet implements

VB.NET 本地保存数据

VB可以用任何格式保存文件数据不仅仅是注册表\XML\INI

甚至于未知的格式。我教你命令：

open "C:\setup.safe" for output as #1

print #1,"object"

close #1

其中setup.safe就是一个文件，后缀为.safe，当然可以改成.dat包括其他任何后缀.

object就是你要写入setup.safe的内容.

相关问答

Q1: vb.net获取本地连接的mac地址

Private Sub Form_Load()

Dim strComputer As String

Dim objWMI As Object

Dim colIP As Object

Dim IP As Object

Dim I As Integer

strComputer = "."

Set objWMI = GetObject("winmgmts://" strComputer "/root/cimv2")

Set colIP = objWMI.ExecQuery _

("Select * from Win32_NetworkAdapterConfiguration where IPEnabled=TRUE")

For Each IP In colIP

If Not IsNull(IP.IPAddress) Then

For I = LBound(IP.IPAddress) To UBound(IP.IPAddress)

MsgBox "IP地址:" IP.IPAddress(I) Chr(10) _

"网卡类型:" IP.Description(I) Chr(10) _

"网卡地址:" IP.Macaddress(I)

Next

End If

Next

End Sub

Q2: 怎样用vb.net读取本地.txt文件？

imports System.IO

读取指定文件

'

'读取指定文本文件

Public Function readtext(ByVal path As String)

If path = "" Then

readtext = "操作失败！"

Exit Function

End If

Try

If File.Exists(path) = True Then

Dim fs As New FileStream(path, FileMode.Open)

Dim sr As New StreamReader(fs)

Dim str As String

str = sr.ReadToEnd.ToString

sr.Close()

fs.Close()

readtext = str

Else

readtext = "操作失败！"

End If

Catch ex As Exception

readtext = "操作失败！"

End Try

End Function

'向指定文件写入数据

Public Function writetext(ByVal path As String, ByVal opi As Integer, ByVal msg As String)

If path = "" Then

writetext = "操作失败！"

Exit Function

End If

Dim op As FileMode

Select Case opi

Case 1

op = FileMode.Append

Case 2

op = FileMode.Create

Case Else

op = FileMode.Create

End Select

Try

If File.Exists(path) = True Then

Dim fs As New FileStream(path, op)

Dim sr As New StreamWriter(fs)

sr.WriteLine(msg)

sr.Close()

fs.Close()

writetext = "操作完成！"

Else

writetext = "操作失败！"

End If

Catch ex As Exception

writetext = "操作失败！"

End Try

End Function

参考这个吧

'

'vb.net源代码来自

'

Q3: vb.net UDP 本地发送和接收怎么使用同一个端口呢

DatagramSocket用于接收和发送UDP的Socket实例。该类有3个构造函数：DatagramSocket()：通常用于客户端编程，它并没有特定监听的端口，仅仅使用一个临时的。程序会让操作系统分配一个可用的端口。DatagramSocket(int port)：创建实例，并固定监听Port端口的报文。通常用于服务端。

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