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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)

member UserPrincipalName : string with 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: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4
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