C#(VB.NET)操作Windows自带的防火墙 之 启用（开启）/禁用（关闭）防火墙

[DllImport("Shell32.dll")]
private static extern uint SHNavigate2([In] ref SHELLEXECUTEINFO pSHELLEXECUTEINFO);

[DllImport("Kernel32.dll")]
private static extern uint RegOpenKeyEx(IntPtr hKey,
    [MarshalAs(UnmanagedType.LPTStr), In] string lpSubKey,
    int ulOptions, int samDesired, out IntPtr phkResult);

[DllImport("Kernel32.dll")]
private static extern int RegCloseKey(IntPtr hKey);

[DllImport("Advapi32.dll", EntryPoint = "RegQueryValueEx", CharSet = CharSet.Auto, SetLastError = true)]
private static extern int RegQueryValueEx ([In, MarshalAs(UnmanagedType.LPTStr)]
    string lpValueName, int reserved, out uint Type, byte[] lpData, ref uint lpcbData);

SHELLEXECUTEINFO sei = CreateShellExecuteInfo(null, "cmd", "/c netsh advfirewall firewall add rule name=\"YourRuleNameHere\" dir=in action=allow protocol=any scope=per\_user", 0, null);
SHNavigate2(ref sei);
int retCode = HIWORD(sei.hResult);
Marshal.FreeCoTaskMem((IntPtr)sei);
regOpenKeyEx IntPtr hkey, "SYSTEM\CurrentControlSet\Services\WFDg", 0, 0, out IntPtr phkResult);
int retCode = RegOpenKeyEx(phkResult, "CurrentConfiguration", 1, 0, out hkey1);
int retCode = RegQueryValueEx (hkey1, "FirewallPolicy", 0, out uint nTType, string FirewallPolicy, ref uint ncbName);