如何使用C#连接XP或seven中的默认拨号
本文关键字:默认 seven 何使用 连接 XP | 更新日期: 2023-09-27 17:59:57
我的系统中有一个拨号连接,即"个人互联网Movil",我需要使用C#连接和断开该连接。
您可以使用此代码,这些导入语句和枚举确实检测到连接,启动拨号框,然后在完成后挂断。如果您不希望用户选择拨号连接,请选择用户InternetAutodial/InternetAutodiaHangup对。但请注意,这对将只使用任何拨号设置为默认值。
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//BEGIN
InternetConnectionState flags = 0;
int nConnection = 0;
bool bInternet = InternetGetConnectedState(ref flags,0);
if (bInternet == false)
{
//Not Connected
if (flags == 0)
{
//Do something to tell the user to install some internet connection
}
int nResult = InternetDial(IntPtr.Zero,"",(int)InternetDialFlags.INTERNETDIALFORCEPROMPT , ref nConnection , 0);
switch(nResult)
{
case 87://Bad Parameter for InternetDial - Couldn't Connect";
break;
case 668://No Connection for InternetDial - Couldn't Connect";
break;
case 631://User Cancelled Dialup
break;
default://Unknown InternetDial Error
break;
case 0://Connection Succeeded
break;
}
//Do whatever you need to do on the internet (send mail etc)
InternetHangUp(nConnection,0);
//DONE
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[DllImport("wininet.dll",CharSet=CharSet.Auto)]
static extern bool InternetGetConnectedState(ref InternetConnectionState lpdwFlags, int dwReserved);
[Flags]
enum InternetConnectionState: int
{
INTERNETCONNECTIONMODEM = 0x1,
INTERNETCONNECTIONLAN = 0x2,
INTERNETCONNECTIONPROXY = 0x4,
INTERNETRASINSTALLED = 0x10,
INTERNETCONNECTIONOFFLINE = 0x20,
INTERNETCONNECTIONCONFIGURED = 0x40
}
[DllImport("wininet.dll",CharSet=CharSet.Auto)]
static extern int InternetDial(IntPtr hwndParent,[MarshalAs(UnmanagedType.LPStr)] string strConnection,[MarshalAs(UnmanagedType.U4)]int dwFlags,ref int dwConnection,int dwReserved);
[Flags]
enum InternetDialFlags: int
{
INTERNETDIALFORCEPROMPT =0x2000,
INTERNETDIALSHOWOFFLINE =0x4000,
INTERNETDIAL_UNATTENDED =0x8000
}
[DllImport("wininet.dll",CharSet=CharSet.Auto)]
static extern int InternetHangUp([MarshalAs(UnmanagedType.U4)] int nConnection,[MarshalAs(UnmanagedType.U4)]int dwReserved);
看看DotRas。
以下是一个快速演示:http://www.youtube.com/user/DotRasProject
您基本上需要使用RasDial
和RasHangUp
WinAPI方法。您可以执行PInvoke,也可以简单地使用已经包装API的DotRas.NET类。