private bool DecodeMachineInfo(string machineInfo, DeviceElement machine)
{
if (string.IsNullOrEmpty(machineInfo) ||
machineInfo.Length != 16)
return false;
byte deviceGroup;
if (!byte.TryParse(machineInfo.Substring(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out deviceGroup))
return false;
if (deviceGroup != 2) // Agricultural devices
return false;
byte deviceClass;
if (!byte.TryParse(machineInfo.Substring(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out deviceClass))
return false;
machine.DeviceClassification = GetMachineType(deviceClass);
return true;
}
private DeviceElement LoadMachine(XmlNode inputNode, out string machineId)
{
var machine = new DeviceElement();
// Required fields. Do not proceed if they are missing
machineId = inputNode.GetXmlNodeValue("@A");
if (machineId == null ||
!DecodeMachineInfo(inputNode.GetXmlNodeValue("@D"), machine))
return null;
// Optional fields
machine.Description = inputNode.GetXmlNodeValue("@B");
machine.SerialNumber = inputNode.GetXmlNodeValue("@E");
_taskDocument.LoadLinkedIds(machineId, machine.Id);
return machine;
}