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.
vb.net获取本地连接的mac地址Private Sub Form_Load()
Dim strComputer As String
Dim objWMIAs Object
Dim colIPAs Object
Dim IPAs Object
Dim IAs 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
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
【vb.net本地 vbnet implements】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
'
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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