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try
{
...//路由到百度
return true;
}
catch
{return false;}
[Flags]
enum ConnectionState : int
{
INTERNET_CONNECTION_MODEM = 0x1, INTERNET_CONNECTION_LAN = 0x2, INTERNET_CONNECTION_PROXY = 0x4, INTERNET_RAS_INSTALLED = 0x10, INTERNET_CONNECTION_OFFLINE = 0x20, INTERNET_CONNECTION_CONFIGURED = 0x40
}
[DllImport("wininet.dll", CharSet = CharSet.Auto)]
static extern bool InternetGetConnectedState(ref ConnectionState lpdwFlags, int dwReserved);
public static bool IsConnectedToInternet()
{
ConnectionState Description = 0;
bool conn = InternetGetConnectedState(ref Description, 0);
return conn;
}