# OpcRequestValidatingEventArgs Class

> Reference: Provides the event data for the RequestValidating event.

<span class="api-meta">since v2.7</span>

<dl class="api-definition">
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx.server">Opc.UaFx.Server</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">OpcRequestValidatingEventArgs Members</a></dd>
</dl>

Provides the event data for the [RequestValidating](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcserver/members#requestvalidating) event.

## Syntax

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

```csharp
public class OpcRequestValidatingEventArgs : EventArgs
```

</div>

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

```vbnet
Public Class OpcRequestValidatingEventArgs
    Inherits EventArgs
```

</div>

## Inheritance

[Object](https://learn.microsoft.com/dotnet/api/system.object) → [EventArgs](https://learn.microsoft.com/dotnet/api/system.eventargs) → **OpcRequestValidatingEventArgs**

## Constructors

| Name | Description |
|---|---|
| [OpcRequestValidatingEventArgs](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcrequestvalidatingeventargs/members#opcrequestvalidatingeventargs) | Initializes a new instance of the OpcRequestValidatingEventArgs class using the `context`, `request`, `requestType` and `result` specified. |

## Properties

| Name | Description |
|---|---|
| [Cancel](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcrequestvalidatingeventargs/members#cancel) | Gets or sets a value indicating whether the request is rejected. |
| [Context](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcrequestvalidatingeventargs/members#context) | Gets the context of the request. |
| [Request](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcrequestvalidatingeventargs/members#request) | Gets the request to validate. |
| [RequestType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcrequestvalidatingeventargs/members#requesttype) | Gets the type of the request. |
| [Result](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.server.opcrequestvalidatingeventargs/members#result) | Gets or sets the result of the validation. |

Inherits members from [EventArgs](https://learn.microsoft.com/dotnet/api/system.eventargs).

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.7–v2.59 |