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Principal.IsMemberOf Method (GroupPrincipal)

Returns a Boolean value that specifies whether the principal is a member of the specified group.

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

public bool IsMemberOf(
	GroupPrincipal group
)

Parameters

group
Type: System.DirectoryServices.AccountManagement.GroupPrincipal

The GroupPrincipal object for which principal membership is determined.

Return Value

Type: System.Boolean
true if the principal is a member of the specified group; otherwise false.

ExceptionCondition
NoMatchingPrincipalException

The GroupPrincipal specified in the group parameter could not be found.

MultipleMatchesException

More than one matching GroupPrincipal was found.

If the current principal is an AD DS principal, the returned groups include the principal's primary group, as indicated by the primary group ID attribute on the AD DS object.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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