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DirectoryAttributeCollection.OnValidate Method

The OnValidate method verifies that value is a DirectoryAttribute object or specifies an add operation.

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

protected override void OnValidate(
	Object value


Type: System.Object

The object to evaluate.


This exception can occur under one of the following conditions:

  • value is a null reference (Nothing in Visual Basic).

  • value is not a DirectoryAttribute object.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.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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