'Declaration
 
Public Function GetFilePosition( _
   ByVal endpointDescriptor As UAEndpointDescriptor, _
   ByVal fileNodeDescriptor As UANodeDescriptor, _
   ByVal fileHandle As UAFileHandle _
) As Long

'Usage
 
Dim instance As EasyUAFileTransferClientCore
Dim endpointDescriptor As UAEndpointDescriptor
Dim fileNodeDescriptor As UANodeDescriptor
Dim fileHandle As UAFileHandle
Dim value As Long
 
value = instance.GetFilePosition(endpointDescriptor, fileNodeDescriptor, fileHandle)

public long GetFilePosition( 
   UAEndpointDescriptor endpointDescriptor,
   UANodeDescriptor fileNodeDescriptor,
   UAFileHandle fileHandle
)

public:
int64 GetFilePosition( 
   UAEndpointDescriptor^ endpointDescriptor,
   UANodeDescriptor^ fileNodeDescriptor,
   UAFileHandle^ fileHandle
) 

Parameters

endpointDescriptor

Endpoint descriptor. Identifies the OPC-UA server.

fileNodeDescriptor

Node descriptor of the OPC UA file.

fileHandle

A handle indicating the access request and thus indirectly the position inside the file.

Return Value

This method corresponds to (but is not fully identical with) the OPC UA File Transfer Method .

The fileNodeDescriptor must be an existing node in the server, of object type OpcLabs.EasyOpc.UA.AddressSpace.Standard.UAObjectTypeIds.FileType.

In OPC UA, the position is UInt64. In this method, the position is System.UInt32, and only non-negative values are valid.

Recommendation: Whenever possible, do not use this method directly, and use a higher-level abstraction instead. You can create System.IO.Stream objects for accessing the file data by using methods like OpcLabs.EasyOpc.UA.IO.Extensions.IEasyUAFileTransferExtension2.OpenOrCreateStream, or obtain them through a file provider (using IEasyUAFileTransferExtension.GetFileProvider2 or IEasyUAFileTransferExtension.GetWritableFileProvider).

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