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DomainController.FindOne Method (DirectoryContext, String, LocatorOptions)

Finds a single domain controller in the specified context and site, allowing for additional search options.

Namespace:  System.DirectoryServices.ActiveDirectory
Assembly:  System.DirectoryServices (in System.DirectoryServices.dll)

public static DomainController FindOne(
	DirectoryContext context,
	string siteName,
	LocatorOptions flag


Type: System.DirectoryServices.ActiveDirectory.DirectoryContext
A DirectoryContext object that contains the target and credentials to use for the search.
Type: System.String
The name of the site to search for a domain controller.
Type: System.DirectoryServices.ActiveDirectory.LocatorOptions
A combination of one or more of the LocatorOptions members that defines the type of domain controller to find.

Return Value

Type: System.DirectoryServices.ActiveDirectory.DomainController
A DomainController object that represents the domain controller that was found by the search.


No domain controller was found.


context, siteName, or flag is not valid.


context or siteName is null.

.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.