# OpcDataChangeDataSet Class

<dl class="api-definition">
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx">Opc.UaFx</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Members</dt>
<dd><a href="./members">OpcDataChangeDataSet Members</a></dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Represents the data changes of monitored items reported by a notification, as defined by the DataChangeNotification of OPC UA.

## Syntax

<div class="api-signature" data-lang="csharp">

```csharp
public class OpcDataChangeDataSet : OpcNotificationDataSet<OpcDataChangeDataSetItem>
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Class OpcDataChangeDataSet
    Inherits OpcNotificationDataSet(Of OpcDataChangeDataSetItem)
```

</div>

## Inheritance

[Object](https://learn.microsoft.com/dotnet/api/system.object) → [OpcNotificationDataSet](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnotificationdataset-1/)&lt;[OpcDataChangeDataSetItem](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcdatachangedatasetitem/)&gt; → **OpcDataChangeDataSet**

## Implements

<ul class="api-implements">
<li><a href="../opc.uafx.iopcnotificationdataset/">IOpcNotificationDataSet</a></li>
</ul>

## Methods

| Name | Description |
|---|---|
| [LoadItems](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcdatachangedataset/members#loaditems)<span class="api-meta">protected · override</span> | Adds an [OpcDataChangeDataSetItem](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcdatachangedatasetitem/) for each data change of the data set to the `items` specified. |

Inherits members from [OpcNotificationDataSet&lt;OpcDataChangeDataSetItem&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnotificationdataset-1/members).

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.5–v2.59 |