// A new Class inside the Treeview : name & icon
private TreeNode ClassToTreeNode(EnIPClass Class)
{
TreeNode tn;
// Known classes
if (Enum.IsDefined(typeof(CIPObjectLibrary), Class.Id))
{
CIPObjectLibrary cipobj = (CIPObjectLibrary)Class.Id;
int img = Classe2Ico(cipobj);
tn = new TreeNode(cipobj.ToString() + " #" + IdStr(Class.Id), img, img);
// Special classes with the known instance(s)
if ((Class.Id == 1) || (Class.Id == 2) || (Class.Id == 0xF4) || (Class.Id == 0xF5) || (Class.Id == 0xF6))
{
EnIPInstance instance = new EnIPInstance(Class, 1); // Instance 1
TreeNode tnI = new TreeNode("Instance #" + IdStr(1), 9, 9);
tnI.Tag = instance;
tnI.ToolTipText = "Node " + IdStr(Class.Id) + "." + IdStr(1);
tn.Nodes.Add(tnI);
}
}
else
{
tn = new TreeNode("Proprietary #" + IdStr(Class.Id), 2, 2);
}
tn.ToolTipText = "Node " + IdStr(Class.Id);
tn.Tag = Class;
return(tn);
}
// fit an Icon according to the selected node
private int Classe2Ico(CIPObjectLibrary clId)
{
switch (clId)
{
case CIPObjectLibrary.Identity:
return(4);
case CIPObjectLibrary.MessageRouter:
return(5);
case CIPObjectLibrary.ConnectionManager:
return(8);
case CIPObjectLibrary.Port:
case CIPObjectLibrary.TCPIPInterface:
case CIPObjectLibrary.EtherNetLink:
case CIPObjectLibrary.ControlNet:
case CIPObjectLibrary.DeviceNet:
case CIPObjectLibrary.Modbus:
return(6);
case CIPObjectLibrary.Assembly:
return(7);
default: return(3);
}
}
public override EnIPNetworkStatus ReadDataFromNetwork()
{
byte[] DataPath = EnIPPath.GetPath(myInstance.myClass.Id, myInstance.Id, Id);
EnIPNetworkStatus ret = ReadDataFromNetwork(DataPath, CIPServiceCodes.GetAttributeSingle);
if (ret == EnIPNetworkStatus.OnLine)
{
CIPObjectLibrary classid = (CIPObjectLibrary)myInstance.myClass.Id;
try
{
if (DecodedMembers == null) // No decoder
{
if (myInstance.DecodedMembers == null)
{
myInstance.AttachDecoderClass();
}
DecodedMembers = myInstance.DecodedMembers; // get the same object as the associated Instance
}
int Idx = 0;
DecodedMembers.DecodeAttr(Id, ref Idx, RawData);
}
catch { }
}
return(ret);
}
public bool AttachDecoderClass()
{
CIPObjectLibrary classid = (CIPObjectLibrary)myClass.Id;
try
{
if (DecoderClass == null)
{
var o = Activator.CreateInstance(Assembly.GetExecutingAssembly().FullName, "System.Net.EnIPStack.ObjectsLibrary.CIP_" + classid.ToString() + "_instance");
DecodedMembers = (CIPObject)o.Unwrap();
}
else
{
var o = Activator.CreateInstance(DecoderClass);
DecodedMembers = (CIPObject)o;
}
return(true);
}
catch { }
return(false);
}
public override EnIPNetworkStatus ReadDataFromNetwork()
{
// Read all class static attributes
byte[] ClassDataPath = EnIPPath.GetPath(Id, 0, null);
EnIPNetworkStatus ret = ReadDataFromNetwork(ClassDataPath, CIPServiceCodes.GetAttributesAll);
// If rejected try to read all attributes one by one
if (ret == EnIPNetworkStatus.OnLineReadRejected)
{
MemoryStream rawbuffer = new MemoryStream();
ushort AttId = 1; // first static attribut number
do
{
ClassDataPath = EnIPPath.GetPath(Id, 0, AttId);
ret = ReadDataFromNetwork(ClassDataPath, CIPServiceCodes.GetAttributeSingle);
// push the buffer into the data stream
if (ret == EnIPNetworkStatus.OnLine)
{
rawbuffer.Write(RawData, 0, RawData.Length);
}
AttId++;
}while (ret == EnIPNetworkStatus.OnLine);
// yes OK like this, pull the data out of the stream into the RawData
if (rawbuffer.Length != 0)
{
Status = ret = EnIPNetworkStatus.OnLine; // all is OK even if the last request is (always) rejected
RawData = rawbuffer.ToArray();
}
}
if (ret == EnIPNetworkStatus.OnLine)
{
CIPObjectLibrary classid = (CIPObjectLibrary)Id;
try
{
if (DecodedMembers == null)
{
try
{
if (DecoderClass == null)
{
// try to create the associated class object
var o = Activator.CreateInstance(Assembly.GetExecutingAssembly().FullName, "System.Net.EnIPStack.ObjectsLibrary.CIP_" + classid.ToString() + "_class");
DecodedMembers = (CIPObject)o.Unwrap();
}
else
{
var o = Activator.CreateInstance(DecoderClass);
DecodedMembers = (CIPObject)o;
}
}
catch
{
// echec, get the base class as described in Volume 1, §4-4.1 Class Attributes
DecodedMembers = new CIPObjectBaseClass(classid.ToString());
}
}
DecodedMembers.SetRawBytes(RawData);
}
catch { }
}
return(ret);
}