ActiveDirectorySchemaPropertyCollection.Add Method

Appends the specified ActiveDirectorySchemaProperty object to this collection.

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

public int Add(
	ActiveDirectorySchemaProperty schemaProperty


Type: System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaProperty

The ActiveDirectorySchemaProperty object to append to this collection.

Return Value

Type: System.Int32
The zero-based index of the ActiveDirectorySchemaProperty object that is appended to this collection.


A call to the underlying directory service resulted in an error.


The object already exists in this collection.


schemaProperty is null.


The ActiveDirectorySchemaProperty object has not yet been saved in the Active Directory Domain Services store.

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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