# OpcFileNode 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">OpcFileNode Members</a></dd>
</dl>

Defines a file node.

## Syntax

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

```csharp
public class OpcFileNode : OpcObjectNode
```

</div>

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

```vbnet
<OpcNodeType(11575)>
Public Class OpcFileNode
    Inherits OpcObjectNode
```

</div>

## Inheritance

[Object](https://learn.microsoft.com/dotnet/api/system.object) → [OpcNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnode/) → [OpcInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcinstancenode/) → [OpcObjectNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjectnode/) → **OpcFileNode**

## Implements

<ul class="api-implements">
<li><a href="../opc.uafx.iopcnode/">IOpcNode</a></li>
<li><a href="../opc.uafx.iopcnodeinfo/">IOpcNodeInfo</a></li>
</ul>

## Remarks

The file node uses the type definition [FileType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttype/#filetype).

## Constructors

| Name | Description |
|---|---|
| [OpcFileNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#opcfilenode)<span class="api-meta">18 overloads</span> | Initializes a new instance of the OpcFileNode class using the `content` as the instance to wrap. |

## Properties

| Name | Description |
|---|---|
| [CanUserWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canuserwrite) | Gets or sets a value indicating whether by default a user can access the file represented for writing taking user access rights into account. |
| [CanUserWriteNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canuserwritenode) | Gets the [OpcPropertyNode&lt;T&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcpropertynode-1/) of the [CanUserWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canuserwrite) property. |
| [CanWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canwrite) | Gets or sets a value indicating whether the file is writable. |
| [CanWriteNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canwritenode) | Gets the [OpcPropertyNode&lt;T&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcpropertynode-1/) of the [CanWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canwrite) property. |
| [CloseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#closenode) | Gets the [OpcFileCloseMethodNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfileclosemethodnode/) used to handle 'Close' method calls to close the file represented. |
| [DefaultTypeDefinitionId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#defaulttypedefinitionid)<span class="api-meta">protected · override</span> | Gets the default identifier which identifies the node that defines the underlying node type from that this [OpcInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcinstancenode/) has been created. |
| [File](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#file)<span class="api-meta">since v2.16</span> | Gets the [IOpcFileInfo](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcfileinfo/) used to access the file represented. |
| [FileInfo](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#fileinfo) | Gets the [FileInfo](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#fileinfo) of the file represented. |
| [GetPositionNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#getpositionnode) | Gets the [OpcFileGetPositionMethodNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilegetpositionmethodnode/) used to handle 'GetPosition' method calls to query the position in the file represented. |
| [MimeType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#mimetype) | Gets the media type of the file. |
| [MimeTypeNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#mimetypenode) | Gets the [OpcPropertyNode&lt;T&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcpropertynode-1/) of the [MimeType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#mimetype) property. |
| [OpenCount](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#opencount) | Gets the number of currently valid file handles on the file. |
| [OpenCountNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#opencountnode) | Gets the [OpcPropertyNode&lt;T&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcpropertynode-1/) of the [OpenCount](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#opencount) property. |
| [OpenNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#opennode) | Gets the [OpcFileOpenMethodNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfileopenmethodnode/) used to handle 'Open' method calls to open the file represented. |
| [ReadNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#readnode) | Gets the [OpcFileReadMethodNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilereadmethodnode/) used to handle 'Read' method calls to read data from the file represented. |
| [SetPositionNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#setpositionnode) | Gets the [OpcFileSetPositionMethodNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilesetpositionmethodnode/) used to handle 'SetPosition' method calls to update the position in the file represented. |
| [Size](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#size) | Gets the size of the file in bytes. |
| [SizeNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#sizenode) | Gets the [OpcPropertyNode&lt;T&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcpropertynode-1/) of the [Size](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#size) property. |
| [WriteNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#writenode) | Gets the [OpcFileWriteMethodNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilewritemethodnode/) used to handle 'Write' method calls to write data to the file represented. |

## Methods

| Name | Description |
|---|---|
| [Close](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#close)<span class="api-meta">since v2.33</span> | Closes the file represented. |
| [GetPosition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#getposition)<span class="api-meta">since v2.33</span> | GetPosition is used to provide the current position of the file handle. |
| [InitializeDefaults](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#initializedefaults)<span class="api-meta">protected · override</span> | Initializes the default values used by the OpcFileNode. |
| [Open](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#open)<span class="api-meta">since v2.33</span> | Opens the file represented. |
| [Read](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#read)<span class="api-meta">since v2.33</span> | Read is used to read a part of the file starting from the current file position. |
| [ReadCanUserWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#readcanuserwrite)<span class="api-meta">protected · virtual</span> | Reads the value of the [CanUserWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canuserwrite) property. |
| [ReadCanWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#readcanwrite)<span class="api-meta">protected · virtual</span> | Reads the value of the [CanWrite](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#canwrite) property. |
| [SetPosition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#setposition)<span class="api-meta">since v2.33</span> | SetPosition is used to set the current position of the file handle. |
| [Write](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcfilenode/members#write)<span class="api-meta">since v2.33</span> | Write is used to write a part of the file starting from the current file position. |

Inherits members from [OpcObjectNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjectnode/members), [OpcInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcinstancenode/members), [OpcNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnode/members).

## Applies to

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