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Forest Class

The Forest class represents an Active Directory Domain Services forest.

System.Object
  System.DirectoryServices.ActiveDirectory.Forest

Namespace:  System.DirectoryServices.ActiveDirectory
Assembly:  System.DirectoryServices (in System.DirectoryServices.dll)
[DirectoryServicesPermissionAttribute(SecurityAction.LinkDemand, Unrestricted = true)]
public class Forest : IDisposable

The Forest type exposes the following members.

  Name Description
Public property ApplicationPartitions Gets a collection of all application partitions in the forest.
Public property Domains Gets a collection of all domains in the forest.
Public property ForestMode Gets the operating mode of the forest.
Public property GlobalCatalogs Gets a collection of all global catalogs in the forest.
Public property Name Gets the name of the forest.
Public property NamingRoleOwner Gets the domain controller that holds the FSMO naming master role for the forest.
Public property RootDomain Gets the first domain that was created in a forest.
Public property Schema Gets the schema of the forest.
Public property SchemaRoleOwner Gets the domain controller that holds the FSMO schema master role for the forest.
Public property Sites Gets a collection of sites that are contained in the forest.
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  Name Description
Public method CreateLocalSideOfTrustRelationship Creates the local side of a trust relationship with the specified forest.
Public method CreateTrustRelationship Creates both sides of a trust relationship with the specified forest.
Public method DeleteLocalSideOfTrustRelationship Deletes the local side of a trust relationship.
Public method DeleteTrustRelationship Deletes both sides of a trust relationship.
Public method Dispose() Releases all managed and unmanaged resources that are held by the object.
Protected method Dispose(Boolean) Releases the managed resources that are used by the object and, optionally, releases unmanaged resources.
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method FindAllDiscoverableGlobalCatalogs() Finds all of the discoverable global catalogs in this forest.
Public method FindAllDiscoverableGlobalCatalogs(String) Finds all of the discoverable global catalogs in this forest in a specified site.
Public method FindAllGlobalCatalogs() Finds all the global catalogs in this forest.
Public method FindAllGlobalCatalogs(String) Finds all the global catalogs in this forest for a given site.
Public method FindGlobalCatalog() Finds any global catalog in this forest.
Public method FindGlobalCatalog(LocatorOptions) Finds a global catalog in this forest for a specified location criteria.
Public method FindGlobalCatalog(String) Finds a global catalog in this forest for a specified site.
Public method FindGlobalCatalog(String, LocatorOptions) Finds a global catalog in this forest for a specified site and location criteria.
Public method GetAllTrustRelationships Gets a collection of the trust relationships of the current forest.
Public method Static member GetCurrentForest Gets a Forest object for the current user context.
Public method Static member GetForest Gets a Forest object for the specified context.
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetSelectiveAuthenticationStatus Gets a Boolean value that indicates whether selective authentication is enabled on the inbound trust relationship with the specified forest. true if selective authentication is enabled; otherwise, false. For more information, see the Remarks section.
Public method GetSidFilteringStatus Gets the SID filtering status of a trust.
Public method GetTrustRelationship Gets the trust relationship between this forest and the specified forest.
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method RaiseForestFunctionality Raises the mode of operation for the forest.
Public method RepairTrustRelationship Repairs a trust relationship.
Public method SetSelectiveAuthenticationStatus Enables or disables selective authentication for an inbound trust.
Public method SetSidFilteringStatus Sets the SID filtering state with the specified forest.
Public method ToString Returns a string representation of the current forest. (Overrides Object.ToString().)
Public method UpdateLocalSideOfTrustRelationship(String, String) Updates the password for the local side of a trust relationship.
Public method UpdateLocalSideOfTrustRelationship(String, TrustDirection, String) Updates the password and trust direction for the local side of a trust relationship.
Public method UpdateTrustRelationship Updates the trust direction for a trust relationship. The trust directions are updated on both sides of the trust.
Public method VerifyOutboundTrustRelationship Verifies that a previously established outbound trust with the specified forest is valid.
Public method VerifyTrustRelationship Verifies that a previously established trust with the specified forest is valid.
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.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.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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Powershell Forest Class Example

I'm always poking around looking for samples, and it's not always easy to find what I want associated with the class I'm interested in. So here is some PowerShell to get a forest.

$ContextType = "Forest"
$TargetDomain = "soecs.ku.edu"
$ForestContext = New-Object System.DirectoryServices.ActiveDirectory.DirectoryContext($ContextType ,$TargetDomain)
$Forest = [system.directoryservices.activedirectory.Forest]::GetForest($ForestContext)

This will return all the info you never wanted about your forest.