OPC Studio User's Guide and Reference
ReadParameters Property (UAMappingContext)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.LiveMapping Namespace > UAMappingContext Class : ReadParameters Property
The read parameters (such as data source or value age).
Syntax
'Declaration
 
<CanBeNullAttribute()>
Public Property ReadParameters As UAReadParameters
'Usage
 
Dim instance As UAMappingContext
Dim value As UAReadParameters
 
instance.ReadParameters = value
 
value = instance.ReadParameters
[CanBeNull()]
public UAReadParameters ReadParameters {get; set;}
[CanBeNull()]
public:
property UAReadParameters^ ReadParameters {
   UAReadParameters^ get();
   void set (    UAReadParameters^ value);
}

Property Value

This value of this property can be null (Nothing in Visual Basic).

Remarks

Because the OpcLabs.EasyOpc.UA.UAReadParameters has implicit conversions from System.Double and OpcLabs.EasyOpc.UA.AddressSpace.UAQualifiedName, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a double precision floating point number (representing the maximum value age in milliseconds), or an OPC UA qualified name (representing the name of the encoding to be used) in place of OpcLabs.EasyOpc.UA.UAReadParameters value when setting this property, and the corresponding OPC UA read parameters will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.UAReadParameters.FromDouble or OpcLabs.EasyOpc.UA.UAReadParameters.FromUAQualifiedName static method instead.

Requirements

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

See Also