WindowsIdentity Constructor (IntPtr, String, WindowsAccountType, Boolean)
Initializes a new instance of the WindowsIdentity class for the user represented by the specified Windows account token, the specified authentication type, the specified Windows account type, and the specified authentication status.
Assembly: mscorlib (in mscorlib.dll)
public: WindowsIdentity( IntPtr userToken, String^ type, WindowsAccountType acctType, bool isAuthenticated )
Parameters
- userToken
- Type: System::IntPtr
The account token for the user on whose behalf the code is running.
- type
- Type: System::String
(Informational use only.) The type of authentication used to identify the user. For more information, see Remarks.
- acctType
- Type: System.Security.Principal::WindowsAccountType
One of the enumeration values.
- isAuthenticated
- Type: System::Boolean
true to indicate that the user is authenticated; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentException | userToken is 0. -or- userToken is duplicated and invalid for impersonation. |
| SecurityException | The caller does not have the correct permissions. -or- A Win32 error occurred. |
The value of the type parameter is used to set the AuthenticationType parameter. If type is nullptr, the security system sets AuthenticationType to Negotiate on Windows Vista and later versions of the Windows operating system, and to Kerberos on earlier versions of the Windows operating system. The security system does not use this value; it is for informational use only.
You can retrieve the token represented by userToken by calling unmanaged code such as the Win32 API LogonUser function. Always release userToken by calling the Win32 API CloseHandle function. For more information on calling unmanaged code, see Consuming Unmanaged DLL Functions.
The following code shows the use of the WindowsIdentity constructor to create a new instance of the WindowsIdentity class for the user represented by the specified Windows account token, the specified authentication type, the specified Windows account type, and the specified authentication status. This code example is part of a larger example provided for the WindowsIdentity class.
void IntPrtStringTypeBoolConstructor( IntPtr logonToken ) { // Construct a WindowsIdentity object using the input account token, // and the specified authentication type, Windows account type, and // authentication flag. String^ authenticationType = "WindowsAuthentication"; WindowsAccountType guestAccount = WindowsAccountType::Guest; bool isAuthenticated = true; WindowsIdentity^ windowsIdentity = gcnew WindowsIdentity( logonToken,authenticationType,guestAccount,isAuthenticated ); Console::WriteLine( "Created a Windows identity object named {0}.", windowsIdentity->Name ); }
- SecurityPermission
for the ability to manipulate the principal object. Associated enumeration: SecurityPermissionFlag::ControlPrincipal.
- SecurityPermission
for the ability to access unmanaged code. Associated enumeration: SecurityPermissionFlag::UnmanagedCode.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.