private Variant Invoke(RemoteMethod method)
{
try
{
Variant result = method.Invoke(this);
return(result);
}
catch (Exception e)
{
ExceptionHandler.Log(e, $"Cannot invoke {Name}.{method.Name}() without errors!");
}
return(method.HasReturnValue() ? method.ReturnValue : Variant.Null);
}
public Variant CallMethod(RemoteMethod remoteMethod, ref NodeId methodNodeId)
{
var methodName = remoteMethod.Name;
if (string.IsNullOrWhiteSpace(methodName))
{
throw new Exception("Method name is empty!");
}
if (_parentNode == null)
{
throw new Exception($"Parent node is null for method '{methodName}'!");
}
if (methodNodeId == NodeId.Null)
{
methodNodeId = BrowseNodeId(_parentNode, methodName, false);
}
List <StatusCode> inputArgumentErrors;
List <Variant> outputArguments;
// call the method on the server.
var result = _session.Call(
_parentNode,
methodNodeId,
remoteMethod.InputArguments,
out inputArgumentErrors,
out outputArguments);
if (remoteMethod.HasReturnValue() && outputArguments.Count > 0)
{
remoteMethod.ReturnValue = !result.IsGood() ? Variant.Null : outputArguments[0];
}
return(remoteMethod.ReturnValue);
}