'Declaration
 
<ExtensionAttribute()>
Public Overloads Shared Function ReadItemValueDouble( _
   ByVal client As IEasyDAClient, _
   ByVal serverDescriptor As ServerDescriptor, _
   ByVal nodeDescriptor As DANodeDescriptor, _
   ByVal readParameters As DAReadParameters _
) As Double

'Usage
 
Dim client As IEasyDAClient
Dim serverDescriptor As ServerDescriptor
Dim nodeDescriptor As DANodeDescriptor
Dim readParameters As DAReadParameters
Dim value As Double
 
value = IEasyDAClientExtension2.ReadItemValueDouble(client, serverDescriptor, nodeDescriptor, readParameters)

[Extension()]
public static double ReadItemValueDouble( 
   IEasyDAClient client,
   ServerDescriptor serverDescriptor,
   DANodeDescriptor nodeDescriptor,
   DAReadParameters readParameters
)

[Extension()]
public:
static double ReadItemValueDouble( 
   IEasyDAClient^ client,
   ServerDescriptor^ serverDescriptor,
   DANodeDescriptor^ nodeDescriptor,
   DAReadParameters^ readParameters
) 

Parameters

client

The client object that will perform the operation.

serverDescriptor

The OPC server involved in the operation.

nodeDescriptor

The descriptor of the OPC node involved in the operation.

readParameters

The read parameters (such as data source or value age).

Return Value

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2012, Windows Server 2016; .NET Core, .NET 5, .NET 6: Linux, macOS, Microsoft Windows

Reference

IEasyDAClientExtension2 Class
IEasyDAClientExtension2 Members
Overload List