---
title: clsExposureBase
summary: API reference for clsExposureBase.
status: draft
owner: SAIF
last_reviewed: 2026-07-24
library: SAIF.Business.UnitStat
reference_type: package
---

# clsExposureBase

Shared exposure-data base class for unit-stat exposure reporting.

## Purpose

- Implement the exposure-side contract shared by downstream concrete exposure types.

## Context

- Namespace: `SAIF.Business.UnitStat`
- Assembly/package: `SAIF.Business.UnitStat` (distributed as NuGet package `SAIF.BOF.Business.UnitStat`)

## Public members

| Member | Signature | Purpose |
| --- | --- | --- |
| `ExposureSummarySeqNum` | `Public ReadOnly Property ExposureSummarySeqNum() As Decimal Implements iExposureData.ExposureSummarySeqNum` | Gets exposure summary seq num. |
| `PolicyUnitSeqNum` | `Public ReadOnly Property PolicyUnitSeqNum() As Decimal Implements iExposureData.PolicyUnitSeqNum` | Gets policy unit seq num. |
| `RateDate` | `Public ReadOnly Property RateDate() As Date Implements iExposureData.RateDate` | Gets rate date. |
| `ERModDate` | `Public ReadOnly Property ERModDate() As Date Implements iExposureData.ERModDate` | Gets ermod date. |
| `ClassNumber` | `Public ReadOnly Property ClassNumber() As String Implements iExposureData.ClassNumber` | Gets class number. |
| `CoverageCode` | `Public ReadOnly Property CoverageCode() As String Implements iExposureData.CoverageCode` | Gets coverage code. |
| `ClassRate` | `Public Property ClassRate() As Decimal Implements iExposureData.ClassRate` | Gets or sets class rate. |
| `ERModFactor` | `Public Property ERModFactor() As Decimal Implements iExposureData.ERModFactor` | Gets or sets ermod factor. |
| `ExposureQuantity` | `Public Property ExposureQuantity() As Decimal Implements iExposureData.ExposureQuantity` | Gets or sets exposure quantity. |
| `PremiumAmount` | `Public Property PremiumAmount() As Decimal Implements iExposureData.PremiumAmount` | Gets or sets premium amount. |
| `SplitCoverageNumber` | `Public Property SplitCoverageNumber() As Decimal Implements iExposureData.SplitCoverageNumber` | Gets or sets split coverage number. |
| `UpdateUser` | `Public Property UpdateUser() As String` | Gets or sets update user. |
| `UpdateDate` | `Public Property UpdateDate() As Date` | Gets or sets update date. |
| `UpdateNumber` | `Public Property UpdateNumber() As Decimal` | Gets or sets update number. |
| `SetExposureQuantityNull` | `Public Sub SetExposureQuantityNull() Implements iExposureData.SetExposureQuantityNull` | Sets exposure quantity to the framework null sentinel value. |
| `SetPremiumAmountNull` | `Public Sub SetPremiumAmountNull() Implements iExposureData.SetPremiumAmountNull` | Sets premium amount to the framework null sentinel value. |
| `SetSplitCoverageNumberNull` | `Public Sub SetSplitCoverageNumberNull() Implements iExposureData.SetSplitCoverageNumberNull` | Sets split coverage number to the framework null sentinel value. |
| `IsExposureQuantityNull` | `Public Function IsExposureQuantityNull() As Boolean Implements iExposureData.IsExposureQuantityNull` | Indicates whether exposure quantity currently holds the framework null sentinel value. |
| `IsPremiumAmountNull` | `Public Function IsPremiumAmountNull() As Boolean Implements iExposureData.IsPremiumAmountNull` | Indicates whether premium amount currently holds the framework null sentinel value. |
| `IsSplitCoverageNumberNull` | `Public Function IsSplitCoverageNumberNull() As Boolean Implements iExposureData.IsSplitCoverageNumberNull` | Indicates whether split coverage number currently holds the framework null sentinel value. |
| `CopyData` | `Public Sub CopyData(ByVal inObjA As iExposureData, ByVal inObjB As iExposureData)` | Copies matching contract fields from one instance to another. |
| `Equals` | `Public Overloads Shared Function Equals(ByVal objA As Object, ByVal objB As Object) As Boolean` | Executes the member operation. |
| `Equals` | `Public Overloads Overrides Function Equals(ByVal inObject As Object) As Boolean` | Executes the member operation. |

## Inherited public members

Members in this section are inherited from `clsBusinessBase` in `SAIF.BOF.Framework`. They are available on this type through inheritance.

| Member | Signature | Purpose | Origin |
| --- | --- | --- | --- |
| `MyGuid` | `ReadOnly Property MyGuid() As String` | Gets the framework GUID assigned to the object. | `SAIF.BOF.Framework — clsBusinessBase` |
| `IsNew` | `ReadOnly Property IsNew() As Boolean` | Indicates whether the object has not yet been persisted. | `SAIF.BOF.Framework — clsBusinessBase` |
| `IsDeleted` | `ReadOnly Property IsDeleted() As Boolean` | Indicates whether the object is marked for deletion. | `SAIF.BOF.Framework — clsBusinessBase` |
| `IsSavable` | `ReadOnly Property IsSavable() As Boolean` | Indicates whether the object is both dirty and valid. | `SAIF.BOF.Framework — clsBusinessBase` |
| `BeginEdit` | `Sub BeginEdit()` | Begins an editable-object snapshot. | `SAIF.BOF.Framework — clsBusinessBase` |
| `CancelEdit` | `Sub CancelEdit()` | Restores the prior editable-object snapshot and reapplies rules. | `SAIF.BOF.Framework — clsBusinessBase` |
| `ApplyEdit` | `Sub ApplyEdit()` | Commits the current editable-object snapshot. | `SAIF.BOF.Framework — clsBusinessBase` |
| `Delete` | `Sub Delete()` | Marks the object for deletion. | `SAIF.BOF.Framework — clsBusinessBase` |
| `Clone` | `Function Clone() As Object` | Creates a clone of the object. | `SAIF.BOF.Framework — clsBusinessBase` |
| `Rules` | `ReadOnly Property Rules() As clsRulesManager` | Gets the rules manager attached to the object. | `SAIF.BOF.Framework — clsBusinessBase` |
| `ErrorCount` | `ReadOnly Property ErrorCount() As Integer` | Gets the current validation error count. | `SAIF.BOF.Framework — clsBusinessBase` |
| `ErrorMessages` | `ReadOnly Property ErrorMessages() As String()` | Gets the current validation error messages. | `SAIF.BOF.Framework — clsBusinessBase` |
| `WarningCount` | `ReadOnly Property WarningCount() As Integer` | Gets the current validation warning count. | `SAIF.BOF.Framework — clsBusinessBase` |
| `WarningMessages` | `ReadOnly Property WarningMessages() As String()` | Gets the current validation warning messages. | `SAIF.BOF.Framework — clsBusinessBase` |
| `InformationalCount` | `ReadOnly Property InformationalCount() As Integer` | Gets the current informational rule count. | `SAIF.BOF.Framework — clsBusinessBase` |
| `InformationalMessages` | `ReadOnly Property InformationalMessages() As String()` | Gets the current informational rule messages. | `SAIF.BOF.Framework — clsBusinessBase` |
| `XMLElementName` | `Property XMLElementName() As String` | Gets or sets the XML element name used by framework serialization. | `SAIF.BOF.Framework — clsBusinessBase` |
| `GetReportXML` | `Function GetReportXML() As String` | Returns framework report XML for the object. | `SAIF.BOF.Framework — clsBusinessBase` |
| `ToXml` | `Function ToXml() As String` | Serializes the object to XML. | `SAIF.BOF.Framework — clsBusinessBase` |

## Behavioral notes

- The base class implements `iExposureData` and centralizes exposure-data copying.

## Constraints and usage notes

- The base class supplies the shared exposure contract and copy helpers used by unit-stat exposure objects.

## Sources

- `Business\SAIF.Business.UnitStat\clsExposureBase.vb`
- `Business\SAIF.Business.UnitStat\iExposureData.vb`
- `Legacy\BusinessObjectFramework\clsBusinessBase.vb`