vb.net获取lp vb从网页获取数据

VB.net如何提取system并修改文件安全属性？

将以下代码保存到模块中：

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Declare Function GetPrivateProfileString Lib "kernel32" Alias _

"GetPrivateProfileStringA" (ByVal lpApplicationName As String, _

ByVal lpKeyName As Any, _

ByVal lpDefault As String, _

ByVal lpReturnedString As String, _

ByVal nSize As Long, _

ByVal lpFileName As String) As Long

Declare Function WritePrivateProfileStringByKeyName Lib "kernel32" Alias _

"WritePrivateProfileStringA" (ByVal lpApplicationName As String, _

ByVal lpKeyName As String, _

ByVal lpString As String, _

Public Function GetIniParam(NomFichier As String, NomSection As String, NomVariable As String) As String

Dim ReadString As String * 255

Dim returnv As String

Dim mResultLen As Integer

mResultLen = GetPrivateProfileString(NomSection, NomVariable, "(Unassigned)", ReadString, Len(ReadString) - 1, NomFichier)

If IsNull(ReadString) Or Left$(ReadString, 12) = "(Unassigned)" Then

Dim Tempvalue As Variant

Dim Message As String

Message = "配置文件 " NomFichier " 不存在."

returnv = ""

Else

returnv = Left$(ReadString, InStr(ReadString, Chr$(0)) - 1)

End If

GetIniParam = returnv

End Function

Public Function WriteWinIniParam(NomDuIni As String, sLaSection As String, sNouvelleCle As String, sNouvelleValeur As String)

Dim iSucccess As Integer

iSucccess = WritePrivateProfileStringByKeyName(sLaSection, sNouvelleCle, sNouvelleValeur, NomDuIni)

If iSucccess = 0 Then

WriteWinIniParam = False

Else

WriteWinIniParam = True

End If

End Function

调用方法：

Call WriteWinIniParam(App.Path "\LiveUpdate.ini", "LiveUpdate", "AppName", txtAppName.Text)

txtFile.Text = GetIniParam(App.Path "\LiveUpdate.ini", "LiveUpdate", "FILES1")

vb.net如何获取IP地址?

做exe程序获取本机IP地址用

System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName()).AddressList

做web程序获取客户端的IP地址用

HttpContext.Current.Request.ServerVariables（"REMOTE_ADDR"]）

vb.net 获取局域网计算机的当前用户名和计算机型号等信息

Private Declare Function GetComputerName Lib "kernel32" Alias "GetComputerNameA" (ByVal lpBuffer As String, nSize As Long) As Long

Private Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpBuffer As String, nSize As Long) As Long

Private Sub GetName()

Dim sJM As String

Dim sMC As String

Dim sIP As String

Dim s As String

s = String(128, Chr(0))

GetComputerName s, Len(s)

s = UCase(Left(s, InStr(1, s, Chr(0)) - 1))

sJM = s'计算机名称

s = String(128, Chr(0))

GetUserName s, Len(s)

s = UCase(Left(s, InStr(1, s, Chr(0)) - 1))

sMC = s‘当前用户名称

End Sub

'用这种方法在远程获得再发回本机就可以吧

'取计算机型号暂时不会

vb.net 窗口句柄获取进程名

FindWindowEx

VB声明

Declare Function FindWindowEx Lib "user32" Alias

"FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As

String, ByVal lpsz2 As String) As Long

说明

在窗口列表中寻找与指定条件相符的第一个子窗口

返回值

Long，找到的窗口的句柄。如未找到相符窗口，则返回零。会设置GetLastError

参数表

参数

类型及说明

hWnd1

Long，在其中查找子的父窗口。如设为零，表示使用桌面窗口（通常说的顶级窗口都被认为是桌面的子窗口，所以也会对它们进行查找）

hWnd2

Long，从这个窗口后开始查找。这样便可利用对FindWindowEx的多次调用找到符合条件的所有子窗口。如设为零，表示从第一个子窗口开始搜索

lpsz1

String，欲搜索的类名。零表示忽略

lpsz2

String，欲搜索的类名。零表示忽略