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Principal.UserPrincipalName Property

Gets or sets the user principal name (UPN) associated with this principal.

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

public string UserPrincipalName { get; set; }

Property Value

Type: System.String
The UPN associated with this principal or null if no if the UPN has not been set.

ExceptionCondition
[T:System.Inval>DidOperationException]

The underlying store does not support this property.

Setting this property to null removes the existing UPN, if one exists.

.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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