Encodable Type Problem

[invinctus]

I am struggling to map a node to my viewmodel.

This is what the node looks like in UaExpert

It is an array of "AxisPositionDataType", first of all i added it as an object to get the binary decoder id. Then I created a class to match the AxisPositiionDataType

     [BinaryEncodingId("nsu=http://boschrexroth.com/OpcUa/CNC/Motion/Types/;i=7022")]
     public class AxisPositionData : Structure
     {
         public double Position { get; set; }
         public string Name { get; set; }
         public bool InPosition { get; set; }
         public override void Decode(IDecoder decoder)
         {
             Position = decoder.ReadDouble(nameof(Position));
            Name = decoder.ReadString(nameof(Name));
            decoder.ReadInt32("Number");
            decoder.ReadInt32("Unit");
            decoder.ReadInt32("Channel");
            InPosition = decoder.ReadBoolean(nameof(InPosition));
            decoder.ReadBoolean("KnowReferencePoint");
            decoder.ReadBoolean("DiameterProgActive");
         }

        public override void Encode(IEncoder encoder)
        {
           throw new NotImplementedException();
        }
 }

now I updated my view model to map the type to this class:

[MonitoredItem("ns=27;s=NC.Chan.AxisPosAcsDrv,01")]
public AxisPositionData[] AcsAxisData { get => acsAxisData; set => SetProperty(ref acsAxisData, value); }

But this gives me an error: "Error publishing value for NodeId ns=27;s=NC.Chan.AxisPosAcsDrv,01. Object of type 'System.Object[]' cannot be converted to type 'AxisPositionData[]'."

I can see that it is decoding the array elements correctly but I cant figure out how to get this to work

[awcullen]

A workaround for the moment would be to implement two properties. The first uses object{] as the property type. The second casts the object[] to the AxisPositionData[]

[MonitoredItem("ns=27;s=NC.Chan.AxisPosAcsDrv,01")]
public object[] AcsAxisData { get => acsAxisData; set => SetProperty(ref acsAxisData, value); }

public AxisPositionData[] AcsAxisData2 { get => AcsAxisData.Cast<AxisPositionData>().ToArray(); }

I'll let you know when I've got something better :)

[awcullen]

I have released a new version 3.1.0 that supports a view model property as you originally wrote.

[MonitoredItem("ns=27;s=NC.Chan.AxisPosAcsDrv,01")]
public AxisPositionData[] AcsAxisData { get => acsAxisData; set => SetProperty(ref acsAxisData, value); }

Thank you for reporting the issue.

[invinctus]

Thats great I'll get that implemented.

[invinctus]

Sorry it has taken me so long to get back around to this but I updated to package version 3.1.0 and I am still getting the same error "Error publishing value for NodeId ns=27;s=NC.Chan.AxisPosAcsDrv,01. Object of type 'System.Object[]' cannot be converted to type 'AxisPositionData[]'."