---
title: clsNdcPriceHistoryCollection
summary: API reference for clsNdcPriceHistoryCollection.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-07-28
library: SAIF.Business.Claim.MedicalBill
reference_type: package
---

# clsNdcPriceHistoryCollection

`clsNdcPriceHistoryCollection` is the collection container for archived national-drug price history records.*

## Purpose

- Groups multiple `clsNdcPriceHistory` items for historical review.*
- Provides list-level add, remove, save, and retrieval operations for price-history data.

## Context

- Namespace: `SAIF.Business.Claim.MedicalBill`
- Assembly/package: `SAIF.Business.Claim.MedicalBill`

## Public members

| Member | Signature | Purpose |
| --- | --- | --- |
| `Item` | `Default Public ReadOnly Property Item(ByVal Index As Integer) As clsNdcPriceHistory` | Returns item. |
| `Item` | `Default Public ReadOnly Property Item(ByVal inNationalDrugCode As String, ByVal inEffDate As Date) As clsNdcPriceHistory` | Returns item. |
| `CurrentItem` | `Public Shadows ReadOnly Property CurrentItem() As clsNdcPriceHistory` | Returns current item. |
| `Save` | `Public Overrides Function Save() As Boolean` | Executes the `Save` operation. |
| `Add` | `Public Shadows Function Add(ByVal inNdcPriceHistory As clsNdcPriceHistory) As Integer` | Executes the `Add` operation. |
| `Remove` | `Public Sub Remove(ByVal inNdcPriceHistory As clsNdcPriceHistory)` | Executes the `Remove` operation. |
| `Remove` | `Public Sub Remove(ByVal inNationalDrugCode As String, ByVal inEffDate As Date)` | Executes the `Remove` operation. |
| `NewCbpNationalDrugPrices` | `Public Shared Function NewCbpNationalDrugPrices(ByVal inDataportal As IDataPortalInfo) As clsNdcPriceHistoryCollection` | Executes the `NewCbpNationalDrugPrices` operation. |
| `GetCbpNationalDrugPrices` | `Public Shared Function GetCbpNationalDrugPrices(ByVal inDataportal As IDataPortalInfo, ByVal inNatationalDrugCode As String) As clsNdcPriceHistoryCollection` | Retrieves the `GetCbpNationalDrugPrices` operation. |

## Behavioral notes

- This type is documented from its source declaration.
- The type participates in the `clsBusinessCollection` inheritance path used by `SAIF.Business.Claim.MedicalBill`.

## Constraints and usage notes

- Consumers should rely on the public members and BOF lifecycle patterns visible in the source file.

## Inherited members (from clsBusinessCollectionBase via clsBusinessCollection(Of T))

This collection type inherits the following public surface from `clsBusinessCollectionBase` (`Legacy\BusinessObjectFramework\clsBusinessCollectionBase.vb`), in addition to the members listed above:

| Member | Signature | Purpose |
| --- | --- | --- |
| `Item` | `Default Public ReadOnly Property Item(ByVal index As Integer) As clsBusinessBase` | Returns the collection member at the given index (default indexer). |
| `Add` | `Sub Add(ByVal inChild As clsBusinessBase)` | Adds a child business object to the collection. |
| `Remove` | `Sub Remove(ByVal inChild As clsBusinessBase)` | Marks a child business object as deleted and removes it from the active list. |
| `Contains` | `Function Contains(ByVal Item As clsBusinessBase) As Boolean` | Indicates whether the collection contains the given item. |
| `ContainsDeleted` | `Function ContainsDeleted(ByVal Item As clsBusinessBase) As Boolean` | Indicates whether the given item exists in the collection's deleted-items list. |
| `ItemByGuid` | `ReadOnly Property ItemByGuid(ByVal inGuid As String) As clsBusinessBase` | Returns the collection member matching the given internal GUID. |
| `MyGuid` | `ReadOnly Property MyGuid() As String` | Returns the internal GUID that uniquely identifies this in-memory collection instance. |
| `IsDirty` | `ReadOnly Property IsDirty() As Boolean` | Indicates whether the collection or any child member has unsaved changes. |
| `IsValid` | `Overridable ReadOnly Property IsValid() As Boolean` | Indicates whether all child members currently have no broken validation rules. |
| `ValidateAllChildren` | `Overridable Property ValidateAllChildren() As Boolean` | Controls whether every child is validated or only the current item. |
| `Rules` | `ReadOnly Property Rules() As clsRulesManager` | Returns the rules manager that tracks broken rules for the collection. |
| `ErrorCount / ErrorMessages` | `ReadOnly Property ErrorCount() As Integer` / `ReadOnly Property ErrorMessages() As String()` | Returns the count and text of broken error-severity rules across the collection. |
| `WarningCount / WarningMessages` | `ReadOnly Property WarningCount() As Integer` / `ReadOnly Property WarningMessages() As String()` | Returns the count and text of broken warning-severity rules across the collection. |
| `InformationalCount / InformationalMessages` | `ReadOnly Property InformationalCount() As Integer` / `ReadOnly Property InformationalMessages() As String()` | Returns the count and text of broken informational-severity rules across the collection. |
| `BeginEdit / CancelEdit / ApplyEdit` | `Sub BeginEdit()` / `Sub CancelEdit()` / `Sub ApplyEdit()` | Begins, rolls back, or commits an edit transaction across the collection. |
| `Save` | `Overridable Function Save() As Boolean` | Persists all added, changed, and deleted members through the BOF data portal. |
| `SaveChild` | `Overridable Function SaveChild() As Boolean` | Persists the collection as a child of a parent object. |
| `Clone` | `Function Clone() As Object` | Returns a deep copy of the collection and its members. |
| `IsManaged` | `ReadOnly Property IsManaged() As Boolean` | Indicates whether the collection is managed by a parent object's lifecycle. |
| `First / FirstItem` | `Function First() As clsBusinessBase` / `ReadOnly Property FirstItem() As clsBusinessBase` | Moves to and/or returns the first item in traversal order. |
| `Next / NextItem` | `Function [Next]() As clsBusinessBase` / `ReadOnly Property NextItem() As clsBusinessBase` | Moves to and/or returns the next item in traversal order. |
| `Previous / PreviousItem` | `Function Previous() As clsBusinessBase` / `ReadOnly Property PreviousItem() As clsBusinessBase` | Moves to and/or returns the previous item in traversal order. |
| `Last / LastItem` | `Function Last() As clsBusinessBase` / `ReadOnly Property LastItem() As clsBusinessBase` | Moves to and/or returns the last item in traversal order. |
| `CurrentItem / CurrentIndex` | `ReadOnly Property CurrentItem() As clsBusinessBase` / `ReadOnly Property CurrentIndex() As Integer` | Returns the current traversal item and its index. |
| `SetCurrent` | `Sub SetCurrent(ByRef inObject As clsBusinessBase)` / `Sub SetCurrent(ByVal inIndex As Integer)` | Sets the current traversal position by item or index. |
| `IndexOf` | `ReadOnly Property IndexOf(ByVal inObject As clsBusinessBase) As Integer` | Returns the index of the given item within the collection. |
| `IsFirst / IsNext / IsLast / IsPrevious / IsCurrent` | `ReadOnly Property IsFirst(ByVal inItem As clsBusinessBase) As Boolean` (and analogous overloads) | Indicate an item's position relative to the current traversal state. |
| `XMLElementName / XMLItemName` | `Property XMLElementName() As String` / `Property XMLItemName() As String` | Get or set the XML element/item names used when serializing the collection. |
| `GetReportXML` | `Function GetReportXML(ByVal inElementName As String) As String` (and file-stream overload) | Returns an XML fragment representing the collection and its members. |
| `ToXML / ToXml` | `Function ToXML() As String` / `Function ToXml(ByVal inTagName As String) As String` | Serializes the collection to XML using the default or a supplied tag name. |

## Sources

- `Business\SAIF.Business.Claim.MedicalBill\clsNdcPriceHistoryCollection.vb`