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WindowsIdentity Class

Represents a Windows user.

System.Object
  System.Security.Principal.WindowsIdentity

Namespace:  System.Security.Principal
Assembly:  mscorlib (in mscorlib.dll)

[<SerializableAttribute>]
[<ComVisibleAttribute(true)>]
type WindowsIdentity =  
    class
        interface IIdentity
        interface ISerializable
        interface IDeserializationCallback
        interface IDisposable
    end

The WindowsIdentity type exposes the following members.

  NameDescription
Public methodWindowsIdentity(IntPtr)Initializes a new instance of the WindowsIdentity class for the user represented by the specified Windows account token.
Public methodWindowsIdentity(String)Initializes a new instance of the WindowsIdentity class for the user represented by the specified User Principal Name (UPN).
Public methodWindowsIdentity(IntPtr, String)Initializes a new instance of the WindowsIdentity class for the user represented by the specified Windows account token and the specified authentication type.
Public methodWindowsIdentity(SerializationInfo, StreamingContext)Initializes a new instance of the WindowsIdentity class for the user represented by information in a SerializationInfo stream.
Public methodWindowsIdentity(String, String)Initializes a new instance of the WindowsIdentity class for the user represented by the specified User Principal Name (UPN) and the specified authentication type.
Public methodWindowsIdentity(IntPtr, String, WindowsAccountType)Initializes a new instance of the WindowsIdentity class for the user represented by the specified Windows account token, the specified authentication type, and the specified Windows account type.
Public methodWindowsIdentity(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.
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  NameDescription
Public propertyAuthenticationTypeGets the type of authentication used to identify the user.
Public propertyGroupsGets the groups the current Windows user belongs to.
Public propertyImpersonationLevelGets the impersonation level for the user.
Public propertyIsAnonymousGets a value indicating whether the user account is identified as an anonymous account by the system.
Public propertyIsAuthenticatedGets a value indicating whether the user has been authenticated by Windows.
Public propertyIsGuestGets a value indicating whether the user account is identified as a Guest account by the system.
Public propertyIsSystemGets a value indicating whether the user account is identified as a System account by the system.
Public propertyNameGets the user's Windows logon name.
Public propertyOwnerGets the security identifier (SID) for the token owner.
Public propertyTokenGets the Windows account token for the user.
Public propertyUserGets the security identifier (SID) for the user.
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  NameDescription
Public methodDispose()Releases all resources used by the WindowsIdentity.
Protected methodDispose(Boolean)Releases the unmanaged resources used by the WindowsIdentity and optionally releases the managed resources.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodStatic memberGetAnonymousReturns a WindowsIdentity object that represents an anonymous user.
Public methodStatic memberGetCurrent()Returns a WindowsIdentity object that represents the current Windows user.
Public methodStatic memberGetCurrent(Boolean)Returns a WindowsIdentity object that represents the Windows identity for either the thread or the process, depending on the value of the ifImpersonating parameter.
Public methodStatic memberGetCurrent(TokenAccessLevels)Returns a WindowsIdentity object that represents the current Windows user, using the specified desired token access level.
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodImpersonate()Impersonates the user represented by the WindowsIdentity object.
Public methodStatic memberImpersonate(IntPtr)Impersonates the user represented by the specified user token.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Explicit interface implemetationPrivate methodIDeserializationCallback.OnDeserializationInfrastructure. Implements the ISerializable interface and is called back by the deserialization event when deserialization is complete.
Explicit interface implemetationPrivate methodISerializable.GetObjectDataInfrastructure. Sets the SerializationInfo object with the logical context information needed to recreate an instance of this execution context.
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Call the GetCurrent method to create a WindowsIdentity object that represents the current user.

The following example shows the use of members of WindowsIdentity class. For an example showing how to obtain a Windows account token through a call to the unmanaged Win32 LogonUser function, and use that token to impersonate another user, see the WindowsImpersonationContext class.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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