C# OPCUA 读写结构体

以下是C# OPCUA读写结构体的示例代码：

// 定义结构体
[DataContract(Namespace = "http://your-namespace-here")]
public class YourStruct
{
    [DataMember(Order = 1)]
    public int IntValue { get; set; }

    [DataMember(Order = 2)]
    public string StringValue { get; set; }
}

// 读取结构体
var nodeToRead = new ReadValueId
{
    NodeId = new NodeId("YourNodeIdHere", 1), // 结构体的NodeId
    AttributeId = Attributes.Value
};
var readRequest = new ReadRequest
{
    NodesToRead = new[] { nodeToRead }
};
var readResponse = await _session.ReadAsync(readRequest);
var extensionObject = (ExtensionObject)readResponse.Results[0].Value;
var yourStruct = extensionObject.Body as YourStruct;

// 写入结构体
var nodeToWrite = new WriteValue
{
    NodeId = new NodeId("YourNodeIdHere", 1), // 结构体的NodeId
    AttributeId = Attributes.Value,
    Value = new DataValue(new ExtensionObject(new YourStruct
    {
        IntValue = 123,
        StringValue = "Hello World"
    }))
};
var writeRequest = new WriteRequest
{
    NodesToWrite = new[] { nodeToWrite }
};
var writeResponse = await _session.WriteAsync(writeRequest);