ListManager.Subtract Method (PIA)

Use this method to subtract one mailing list from another mailing list, and to place the result in a third list.

Definition

[Visual Basic .NET]

Imports Microsoft.CommerceServer.Interop.Targeting
…
Public Sub Subtract(srcList As Object,
 lessList As Object,
 resList As Object,
 errLimit As Integer,
 bAsync As Integer,
 Optional ByRef pvarOpID As Object)

[C#]

using Microsoft.CommerceServer.Interop.Targeting;
…
public void Subtract(objectsrcList,
 objectlessList,
 objectresList,
 interrLimit,
 intbAsync,
 ref objectpvarOpID);

Parameters

[Visual Basic .NET]

• srcList
  An Object that contains the ID or name of the list from which elements will be subtracted.
• lessList
  An Object that contains the ID or name of the less list.
• resList
  An Object that contains the ID or name of the list into which the results of the subtraction operation will be placed.
• errLimit
  An Integer that is not used.
• bAsync
  An Integer that specifies whether the copy operation is performed synchronously or asynchronously. A value of 1 indicates asynchronous processing. A value of 0 indicates synchronous processing.
• pvarOpID
  An optional Object used to return an Operation ID. This Operation ID is used in subsequent processing concerning this operation.

[C#]

• srcList
  An object that contains the ID or name of the list from which elements will be subtracted.
• lessList
  An object that contains the ID or name of the less list.
• resList
  An object that contains the ID or name of the list into which the results of the subtraction operation will be placed.
• errLimit
  An int that is not used.
• bAsync
  An int that specifies whether the copy operation is performed synchronously or asynchronously. A value of 1 indicates asynchronous processing. A value of 0 indicates synchronous processing.
• pvarOpID
  A reference to an object used to return an Operation ID. This Operation ID is used in subsequent processing concerning this operation.

Exceptions

This method may throw one of many mapped exceptions or an exception of type COMException. See Standard COM Errors for additional details.

[Visual Basic .NET]

The following table shows the custom COM errors that a COMException can wrap.

[C#]

The following table shows the custom COM errors that a COMException can wrap.

Remarks

The result list must exist prior to calling the method; however, any data in the list will be overwritten.

This method keys on the rcp_email column, and therefore both the source (srcList parameter) and less (lessList parameter) lists must be Mailable lists (LISTFLAG_MAILABLE set to True). Records from the source list that do not have duplicate e-mail addresses (rcp_email)**in the less list are copied to the result (resList parameter) list. Any existing data in the result list is deleted.

The parameter pvarOpID contains valid data only if the subtraction operation is performed asynchronously.

[Visual Basic .NET]

Example

oListManager.Subtract ("{2B544800-4169-4C49-8713-1B794078B4C9}", _
 "{454799A2-312B-4F5F-90A0-F514FBA0EC5A}", _
 "{7131B794-5448-078B-B544-799A2311B79A}", 10, 0)

Requirements

Namespace: Microsoft.CommerceServer.Interop.Targeting

Platforms: Windows 2000, Windows Server 2003

Assembly: listmanagerlib (in listmanagerlib.dll)

See Also

ListManager Class

Copyright © 2005 Microsoft Corporation.
All rights reserved.