CredUIReturnCodes returnCode = NativeMethods.CredUIParseUserName(userName, userBuilder, int.MaxValue, domainBuilder, int.MaxValue);

internal static class UnsafeNativeMethods {

IntPtr fptr = UnsafeNativeMethods.GetProcAddress( hModule, "DllRegisterServer" );

        NativeMethods.SYSTEM_INFO

        NativeMethods.GetSystemInfo(out info);

    // Consumer of the NativeMethods class shown below

    NativeMethods oMemoryInfo = new NativeMethods();

    public class NativeMethods {

           public NativeMethods() {

            // Consumer of the NativeMethods class shown below

            NativeMethods oMemoryInfo = new NativeMethods();

    public class NativeMethods {

           public NativeMethods() {

     if (!NativeMethods.IsWow64Process(processHandle, out retVal))

    [MarshalAs(UnmanagedType.ByValArray, SizeConst = NativeMethods.NCBNAMSZ)]

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NativeMethods.NCBNAMSZ)]

    internal static class NativeMethods

        if (!NativeMethods.RemoveDirectory(normalizedPath))

        this.dwLength = (uint)Marshal.SizeOf(typeof(NativeMethods.MEMORYSTATUSEX));

        this.dwLength = (uint)Marshal.SizeOf(typeof(NativeMethods.MEMORYSTATUSEX));

    void AddPlace ( [In, MarshalAs ( UnmanagedType.Interface )] IShellItem psi, NativeMethods.FDAP fdap );

    void AddPlace ( [In, MarshalAs ( UnmanagedType.Interface )] IShellItem psi, NativeMethods.FDAP fdap );

    void RegisterFolder ( [In] ref Guid rfid, [In] ref NativeMethods.KNOWNFOLDER_DEFINITION pKFD );

                  [In] NativeMethods.FFFP_MODE mode,

    void RegisterFolder ( [In] ref Guid rfid, [In] ref NativeMethods.KNOWNFOLDER_DEFINITION pKFD );

                  [In] NativeMethods.FFFP_MODE mode,

    void GetAt ( [In] uint iProp, out NativeMethods.PROPERTYKEY pkey );

    void GetValue ( [In] ref NativeMethods.PROPERTYKEY key, out object pv );

    void SetValue ( [In] ref NativeMethods.PROPERTYKEY key, [In] ref object pv );

    Sub GetAt(ByVal iProp As UInt32, ByRef pkey As NativeMethods.PROPERTYKEY)

    Sub GetValue(ByRef key As NativeMethods.PROPERTYKEY, ByRef pv As Object)

    Sub SetValue(ByRef key As NativeMethods.PROPERTYKEY, ByRef pv As Object)

    void GetPropertyDescriptionList ( [In] ref NativeMethods.PROPERTYKEY keyType, [In] ref Guid riid, out IntPtr ppv );

    void GetAttributes ( [In] NativeMethods.SIATTRIBFLAGS dwAttribFlags, [In] uint sfgaoMask, out uint psfgaoAttribs );

        , out UnsafeNativeMethods.WIN32_FIND_DATAA pfd, UnsafeNativeMethods.SLGP_FLAGS fFlags);

    void Resolve(IntPtr hwnd, UnsafeNativeMethods.SLR_FLAGS fFlags);

    void GetPath([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile, int cchMaxPath, out UnsafeNativeMethods.WIN32_FIND_DATAW pfd, UnsafeNativeMethods.SLGP_FLAGS fFlags);

    void Resolve(IntPtr hwnd, UnsafeNativeMethods.SLR_FLAGS fFlags);

Public Class NativeMethods

            if(!NativeMethods.GetKeyboardState(keys)){

    internal static class NativeMethods {

    Me.Text = "Caps:" & NativeMethods.CapsLockState.ToString

    Me.Text &= ", Num: " & NativeMethods.NumLockState.ToString

    Me.Text &= ", Scroll: " & NativeMethods.ScrollLockState.ToString

Public Class NativeMethods

'NativeMethods.GetParentSafe(IntPtr)' calls into 'Marshal.GetLastWin32Error()' which has a LinkDemand. By making this call, 'Marshal.GetLastWin32Error()' is indirectly exposed to user code. Review the following protection:

->'NativeMethods.GetParentSafe(IntPtr)'

->'NativeMethods.GetParentSafe(IntPtr)'

        return SafeNativeMethods.CloseWindowStation(handle);

internal static extern int MapWindowPoints(IntPtr hWndFrom, IntPtr hWndTo, [In, Out] ref NativeMethods.RECT rect, [MarshalAs(UnmanagedType.U4)] int cPoints);

internal static class UnsafeNativeMethods

   internal static extern int MapWindowPoints(IntPtr hWndFrom, IntPtr hWndTo, [In, Out] ref NativeMethods.RECT rect, [MarshalAs(UnmanagedType.U4)] int cPoints);

     NativeMethods.RECT ir = rectangle;

static extern TODO NativeMethods(TODO);

Declare Function NativeMethods Lib "user32.dll" (TODO) As TODO

        return SafeNativeMethods.CloseWindowStation(handle);

//GitHub > Cassia > Impl > NativeMethods.cs

int result = NativeMethods.PathCleanupSpec(folderSpec, fileSpec);

bool result = NativeMethods.PathYetAnotherMakeUniqueName(buffer, folderSpec, null, fileSpec);

    If SafeNativeMethods.SHParseDisplayName(folderPath, IntPtr.Zero, pidlFolder, 0, 0) = 0 Then

    If SafeNativeMethods.SHParseDisplayName(Path.Combine(_folderPath, fileName), IntPtr.Zero, pidl, 0, 0) = 0 Then

    SafeNativeMethods.SHOpenFolderAndSelectItems(pidlFolder, pidl.Length, pidl, 0)

  Friend NotInheritable Class SafeNativeMethods

        NativeMethods.PowerDuplicateScheme(IntPtr.Zero, ref VISA_PM_BASIC_SCHEMES.BALANCED, ref RetrPointer);

        uint set = NativeMethods.PowerWriteFriendlyName(IntPtr.Zero, ref powerPlanId, IntPtr.Zero, IntPtr.Zero, name, BufferSize);

        UnsafeNativeMethods.SCARD_IO_REQUEST request = new UnsafeNativeMethods.SCARD_IO_REQUEST();

        request.cbPciLength = System.Runtime.InteropServices.Marshal.SizeOf(typeof(UnsafeNativeMethods.SCARD_IO_REQUEST));

        var locallyUniqueIdentifier = new NativeMethods.LUID();

        if (NativeMethods.LookupPrivilegeValue(null, securityEntityValue, ref locallyUniqueIdentifier))

           var TOKEN_PRIVILEGES = new NativeMethods.TOKEN_PRIVILEGES();

           TOKEN_PRIVILEGES.Attributes = NativeMethods.SE_PRIVILEGE_ENABLED;

          var currentProcess = NativeMethods.GetCurrentProcess();

          if (NativeMethods.OpenProcessToken(currentProcess, NativeMethods.TOKEN_ADJUST_PRIVILEGES | NativeMethods.TOKEN_QUERY, out tokenHandle))

             if (NativeMethods.AdjustTokenPrivileges(tokenHandle, false,

            if (lastError == NativeMethods.ERROR_NOT_ALL_ASSIGNED)

             NativeMethods.CloseHandle(tokenHandle);

   internal static class NativeMethods

        hEventLog = NativeMethods.OpenEventLog(IntPtr.Zero, logName);

        Boolean success = NativeMethods.ClearEventLog(hEventLog, savePath);

            NativeMethods.CloseEventLog(hEventLog);

        uint length = UnsafeNativeMethods.GetLengthSid(pSid);

        UnsafeNativeMethods.CopySid(length, bytes, pSid);

      NativeMethods.CreateWellKnownSid(wellKnownSidType, domainSid, pSid, ref cbSid);

      if (NativeMethods.CreateWellKnownSid(wellKnownSidType, domainSid, pSid, ref cbSid))

      NativeMethods.ConvertSidToStringSid(pSid, out sidString);

        NativeMethods.CERT_CREDENTIAL_INFO certInfo =

            new NativeMethods.CERT_CREDENTIAL_INFO();

        certInfo.cbSize = (uint)Marshal.SizeOf(typeof(NativeMethods.CERT_CREDENTIAL_INFO));

            NativeMethods.CredMarshalCredential(NativeMethods.CertCredential,

            NativeMethods.CredFree(marshaledCredential);

    backlightHandle = NativeMethods.SetPowerRequirement("BKL1:", DevicePowerState.D0, 1, null, 0);

    NativeMethods.ReleasePowerRequirement(backlightHandle);

    NativeMethods.DHCP_BINARY_DATA uid = new NativeMethods.DHCP_BINARY_DATA();

    NativeMethods.DHCP_IP_RESERVATION_V4 reservation = new NativeMethods.DHCP_IP_RESERVATION_V4();

    reservation.bAllowedClientTypes = NativeMethods.DHCP_CLIENT_TYPE.CLIENT_TYPE_BOTH;

    NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5 element = new NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5();

    element.ElementType = NativeMethods.DHCP_SUBNET_ELEMENT_TYPE.DhcpReservedIps;

        uint result = NativeMethods.DhcpAddSubnetElementV5(server.Address, subnet, ref element);

        if (result != NativeMethods.ERROR_SUCCESS)

        result = NativeMethods.DhcpEnumSubnetElementsV5(server.Address, subnet, NativeMethods.DHCP_SUBNET_ELEMENT_TYPE.DhcpReservedIps, ref resumeHandle, 1000, ref enumInfo, ref read, ref total);

        if (result == NativeMethods.ERROR_NO_MORE_ITEMS) break;

        if ((result != NativeMethods.ERROR_SUCCESS && result != NativeMethods.ERROR_MORE_DATA) || enumInfo == IntPtr.Zero)

        NativeMethods.DHCP_SUBNET_ELEMENT_INFO_ARRAY_V5 data;

        data = (NativeMethods.DHCP_SUBNET_ELEMENT_INFO_ARRAY_V5) Marshal.PtrToStructure(enumInfo, typeof(NativeMethods.DHCP_SUBNET_ELEMENT_INFO_ARRAY_V5));

            IntPtr p = (IntPtr) ((int) data.Elements + (i * Marshal.SizeOf(typeof(NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5))));

            NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5 element;

            element = (NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5) Marshal.PtrToStructure(p, typeof(NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5));

            if (element.ElementType == NativeMethods.DHCP_SUBNET_ELEMENT_TYPE.DhcpReservedIps) {

                NativeMethods.DHCP_IP_RESERVATION_V4 reservation;

                reservation = (NativeMethods.DHCP_IP_RESERVATION_V4) Marshal.PtrToStructure(element.ElementValue, typeof(NativeMethods.DHCP_IP_RESERVATION_V4));

    while (result == NativeMethods.ERROR_MORE_DATA);

    NativeMethods.DHCP_BINARY_DATA uid = new NativeMethods.DHCP_BINARY_DATA();

    NativeMethods.DHCP_IP_RESERVATION_V4 reservation = new NativeMethods.DHCP_IP_RESERVATION_V4();

    reservation.bAllowedClientTypes = NativeMethods.DHCP_CLIENT_TYPE.CLIENT_TYPE_BOTH;

    NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5 element = new NativeMethods.DHCP_SUBNET_ELEMENT_DATA_V5();

    element.ElementType = NativeMethods.DHCP_SUBNET_ELEMENT_TYPE.DhcpReservedIps;

        uint result = NativeMethods.DhcpRemoveSubnetElementV5(server.Address, subnet, ref element, NativeMethods.DHCP_FORCE_FLAG.DhcpFullForce);

        if (result != NativeMethods.ERROR_SUCCESS)

One question: The APIs here appear to be machanically created from some other source - from things like "System.Windows.Forms.NativeMethods"? The functions are present, but not the structures and data types used in the params. Any plans to do a mechanical dump of the structures as well? The real magic of marshalling is getting the param types set up correctly, which for structures can be quite a pain.

I would love to have a downloadable solution that has all of the signatures, structures, consts, etc., like Microsoft's SafeNativeMethods and UnsafeNativeMethods. -- Omer van Kloeten

    ''' use the <see cref="NativeMethods.SendMessageTimeout"/> function with the <paramref name="hwnd"/> parameter set to

    ''' result of a call to the <see cref="NativeMethods.SetWindowPos"/> function or another window-management function.

    ''' call to the <see cref="NativeMethods.ShowWindow"/> function.

IntPtr pic = OpenProcess(NativeMethods.ProcessAccessFlags.All, true, (int)pid);

IntPtr deviceInfoSetHandle = NativeMethods.SetupDiGetClassDevs(ref deviceClassGuid, null, IntPtr.Zero, DIGCF_PRESENT);

    while (NativeMethods.SetupDiEnumDeviceInfo(deviceInfoSetHandle, index++, ref deviceInfoData))

        NativeMethods.SetupDiGetDeviceRegistryProperty(deviceInfoSetHandle, ref deviceInfoData, SPDRP_FRIENDLYNAME, out var _, buffer, (uint)buffer.Length, out var _);

            NativeMethods.SerialDisplayAdvancedSettings(IntPtr.Zero, deviceInfoSetHandle, ref deviceInfoData);

    NativeMethods.SetupDiDestroyDeviceInfoList(deviceInfoSetHandle);

        return (BasicPrimaryDomainInfo)NativeMethods.GetPrimaryDomainInfo(

                err= NativeMethods.NetGroupEnum(

                err= NativeMethods.NetLocalGroupEnum(

    internal static partial class NativeMethods

NativeMethods.FbwfCacheThresholdNotification((uint)100, _manualResetEvent.SafeWaitHandle);

NativeMethods.FbwfGetVolumeList(true, pBuffer, ref size);

   NativeMethods.FbwfIsFilterEnabled(ref currentSession, ref nextSession);

    internal static partial class NativeMethods

         if (res == null || res.Length == 0 || res[0].status != NativeMethods.DS_NAME_ERROR.DS_NAME_NO_ERROR)

    NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION

        result = (UInt32)NativeMethods.NtQuerySystemInformation(NativeMethods.SYSTEM_INFORMATION_CLASS.SystemMemoryListInformation, buff, result, out returnSize);

            throw new System.ComponentModel.Win32Exception(((NativeMethods.NtStatus)result).ToString());

        if (NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION_SIZE == 0)

            NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION_SIZE = returnSize;

        MemoryList = (NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION)Marshal.PtrToStructure(buff, typeof(NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION));

    NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION

        result = (UInt32)NativeMethods.NtQuerySystemInformation(NativeMethods.SYSTEM_INFORMATION_CLASS.SystemMemoryListInformation, buff, result, out returnSize);

            throw new System.ComponentModel.Win32Exception(((NativeMethods.NtStatus)result).ToString());

        MemoryList = (NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION)Marshal.PtrToStructure(buff, typeof(NativeMethods.SYSTEM_MEMORY_LIST_INFORMATION));

        IntPtr file = NativeMethods.CreateFile("ACS1:", 0, 0, IntPtr.Zero, ECreationDisposition.OpenExisting, 0, IntPtr.Zero);

        if (!NativeMethods.DeviceIoControl(file, controlCode, inBuffer, inSize, outBuffer, outSize, ref bytesReturned, IntPtr.Zero))

        NativeMethods.CloseHandle(file);

        return (UnsafeNativeMethods.DTL_DRIVER_CLOSE(driverId, timeOut));

        UnsafeNativeMethods.DTL_UNINIT(driverId);

        return (UnsafeNativeMethods.DTL_INIT(tableSize));

        UnsafeNativeMethods.DTL_ERROR_S(dtlSts, msg, buffSize);

        return (UnsafeNativeMethods.DTL_DRIVER_OPEN(driverId, driverName, timeOut));

        return (UnsafeNativeMethods.DTL_VERSION(versionText, maxCharsToReturn));

        return (UnsafeNativeMethods.DTL_C_DEFINE(ref nameId, defString));

        return (UnsafeNativeMethods.DTL_UNDEF(nameId));

        return (UnsafeNativeMethods.DTL_READ_W(nameId, readData, ref ioStat, timeOut));

        return (UnsafeNativeMethods.DTL_WRITE_W(nameId, writeData, ref ioStat, timeOut));

    internal static class UnsafeNativeMethods

        return (UnsafeNativeMethods.DTL_DRIVER_CLOSE(driverId, timeOut));

        UnsafeNativeMethods.DTL_UNINIT(driverId);

        return (UnsafeNativeMethods.DTL_INIT(tableSize));

        UnsafeNativeMethods.DTL_ERROR_S(dtlSts, msg, buffSize);

        return (UnsafeNativeMethods.DTL_DRIVER_OPEN(driverId, driverName, timeOut));

        return (UnsafeNativeMethods.DTL_VERSION(versionText, maxCharsToReturn));

        return (UnsafeNativeMethods.DTL_C_DEFINE(ref nameId, defString));

        return (UnsafeNativeMethods.DTL_UNDEF(nameId));

        return (UnsafeNativeMethods.DTL_READ_W(nameId, readData, ref ioStat, timeOut));

        return (UnsafeNativeMethods.DTL_WRITE_W(nameId, writeData, ref ioStat, timeOut));

    internal static class UnsafeNativeMethods

        return (UnsafeNativeMethods.DTL_DRIVER_CLOSE(driverId, timeOut));

        UnsafeNativeMethods.DTL_UNINIT(driverId);

        return (UnsafeNativeMethods.DTL_INIT(tableSize));

        UnsafeNativeMethods.DTL_ERROR_S(dtlSts, msg, buffSize);

        return (UnsafeNativeMethods.DTL_DRIVER_OPEN(driverId, driverName, timeOut));

        return (UnsafeNativeMethods.DTL_VERSION(versionText, maxCharsToReturn));

        return (UnsafeNativeMethods.DTL_C_DEFINE(ref nameId, defString));

        return (UnsafeNativeMethods.DTL_UNDEF(nameId));

        return (UnsafeNativeMethods.DTL_READ_W(nameId, readData, ref ioStat, timeOut));

        return (UnsafeNativeMethods.DTL_WRITE_W(nameId, writeData, ref ioStat, timeOut));

    internal static class UnsafeNativeMethods