---
title: clsPolicyAffiliateBaseCollection
summary: API reference for clsPolicyAffiliateBaseCollection.
status: draft
owner: Technical Writer
last_reviewed: 2026-07-31
library: SAIF.Business.Policy.Affiliate
reference_type: package
---

# clsPolicyAffiliateBaseCollection

Abstract collection shell for policy-affiliate lists that contributes only shared criteria semantics and inherited BOF collection behavior.

## Purpose
- Define the common policy/date-window retrieval shape used by interested-party and preferred-worker collections.

## Context
- Namespace: `SAIF.Business.Policy.Affiliate`
- Assembly/package: `SAIF.Business.Policy.Affiliate`

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |

## Inherited public members

Members in this table whose Origin is `SAIF.Framework.Core` were retrieved from that library's documentation via the Legends CLI; the Origin column identifies the originating class for each member.

| Member | Signature | Purpose | Origin |
| --- | --- | --- | --- |
| First | `Sub First()` | Moves the current-item pointer to the first item in the BOF collection. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| Last | `Sub Last()` | Moves the current-item pointer to the last item in the BOF collection. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| Next | `Sub Next()` | Advances the current-item pointer to the next item. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| Previous | `Sub Previous()` | Moves the current-item pointer to the previous item. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| SetCurrent | `Sub SetCurrent(item As Object)` | Sets the current item used by traversal-aware consumers. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| Traverse | `Sub Traverse(...)` | Exposes BOF collection traversal behavior to callers that walk the list surface. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| Error | `ReadOnly Property Error As String` | Surfaces collection-level validation or broken-rule text to data-binding consumers. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |
| Item(columnName) | `ReadOnly Property Item(columnName As String) As String` | Returns column-specific validation error text through `IDataErrorInfo`. | `SAIF.Framework.Core` — `clsBusinessCollectionBase` |

## Behavioral notes
- Related operations, rules, and SQL are cross-referenced from the library-level documentation.

## Constraints and usage notes
- The library exposes read-only retrieval behavior; no type in this package can persist changes through live criteria SQL.

> **Note:** Inherited-member descriptions attributed to `SAIF.Framework.Core` in the Origin column were retrieved from that library's documentation via the Legends CLI and should be reverified if the dependency version changes.

## Sources
- `Business\SAIF.Business.Policy.Affiliate\clsPolicyAffiliateBaseCollection.vb`