IEasyUAFileTransferExtension Class

Contains extension methods to the IEasyUAFileTransfer interface.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ExtensionAttribute()>
<ComVisibleAttribute(False)>
<ExceptionContractAnnotationAttribute(True)>
<ExceptionContractVerificationAttribute(True)>
Public MustInherit NotInheritable Class IEasyUAFileTransferExtension

'Usage
 
Dim instance As IEasyUAFileTransferExtension

[Extension()]
[ComVisible(false)]
[ExceptionContractAnnotation(true)]
[ExceptionContractVerification(true)]
public static class IEasyUAFileTransferExtension

[Extension()]
[ComVisible(false)]
[ExceptionContractAnnotation(true)]
[ExceptionContractVerification(true)]
public ref class IEasyUAFileTransferExtension abstract sealed

Remarks

The "file transfer" in the name corresponds to how the related OPC UA specification part is titled. In reality, the functionality covers more than just file transfer - it represents a file system in OPC UA, and provides file access and manipulation operations.

See OPC UA File Transfer Concepts for basic information about what is OPC UA File Transfer and how it works.

See OPC UA File Transfer internals for more information about some internal functionality aspects such as:

Object type checking,
Connection locking,
Stream buffering,
Stream expansion,
Read/write chunking,
Read/write size limits,
Adaptive read/write sizes,
Metadata caching and model changes.

This class contains extension methods (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

Inheritance Hierarchy

System.Object
OpcLabs.EasyOpc.UA.FileTransfer.IEasyUAFileTransferExtension

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

IEasyUAFileTransferExtension Members
OpcLabs.EasyOpc.UA.FileTransfer Namespace
IEasyUAFileTransfer Interface
IEasyUAFileTransferExtension2 Class

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