Type a page name and press Enter. You'll jump to the page if it exists, or you can create it if it doesn't.
To create a page in a module other than advapi32, prefix the name with the module name and a period.
[DllImport("advapi32.dll", CharSet = CharSet.Unicode, SetLastError=true)]
static extern bool CredMarshalCredential(int credType,
// we need to get this as a pointer because we'll have
// to release it later on calling CredFree().
out IntPtr marshaledCredential);
Declare Function CredMarshalCredential Lib "advapi32.dll" (TODO) As TODO
internal struct CERT_CREDENTIAL_INFO
public uint cbSize;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
public byte rgbHashOfCert;
internal static int CertCredential = 1;
Alternative Managed API:
Do you know one? Please contribute it!
Tips & Tricks:
One needs to free the string returned in the "out IntPtr marshaledCredential" parameter!
NativeMethods.CERT_CREDENTIAL_INFO certInfo =
certInfo.cbSize = (uint)Marshal.SizeOf(typeof(NativeMethods.CERT_CREDENTIAL_INFO));
// certCredential.Certificate is an instance of the X509Certificate2 class.
certInfo.rgbHashOfCert = certCredential.Certificate.GetCertHash();
IntPtr marshaledCredential = IntPtr.Zero;
bool result =
// we need to do this here, before we free marshaledCredential
domainName = String.Empty;
userName = Marshal.PtrToStringUni(marshaledCredential);
password = certCredential.CardPin;
if (marshaledCredential != IntPtr.Zero)
The LogonUser function attempts to log a user on to the local computer. The local computer is the computer from which LogonUser was called. You cannot use LogonUser to log on to a remote computer.
5/10/2018 6:55:19 AM - -18.104.22.168
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-22.214.171.124
Please edit this page!
Do you have...
helpful tips or sample code to share for using this API in managed code?
corrections to the existing content?
variations of the signature you want to share?
additional languages you want to include?
Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).