public OPCNamespaceType QueryOrganization()
{
OPCNamespaceType l_NamespaceType;
m_IfBrowse.QueryOrganization(out l_NamespaceType);
return(l_NamespaceType);
}
void ImportOPCChannels(IOPCBrowseServerAddressSpace srv, TreeNodeCollection root)
{
OPCNAMESPACETYPE nsType;
srv.QueryOrganization(out nsType);
OpcRcw.Da.IEnumString es;
if (nsType == OPCNAMESPACETYPE.OPC_NS_HIERARCHIAL)
{
try{ srv.BrowseOPCItemIDs(OPCBROWSETYPE.OPC_BRANCH, "", 0, 0, out es); }
catch (COMException) { return; }
int fetched;
do
{
string[] tmp = new string[100];
es.RemoteNext(tmp.Length, tmp, out fetched);
for (int i = 0; i < fetched; i++)
{
try{ srv.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_DOWN, tmp[i]); }
catch (Exception e)
{
Env.Current.Logger.LogWarning(string.Format("OPC server failed to handle OPC_BROWSE_DOWN request for item '{0}' ({1})", tmp[i], e.Message));
continue;
};
TreeNode node = root.Add(tmp[i]);
ImportOPCChannels(srv, node.Nodes);
try { srv.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_UP, ""); }
catch (Exception e)
{
Env.Current.Logger.LogWarning(string.Format("OPC server failed to handle OPC_BROWSE_UP request for item '{0}' ({1})", tmp[i], e.Message));
continue;
};
}
} while(fetched > 0);
try{ srv.BrowseOPCItemIDs(OPCBROWSETYPE.OPC_LEAF, "", 0, 0, out es); }
catch (COMException) { return; }
IterateOPCItems(srv, root, es);
}
else if (nsType == OPCNAMESPACETYPE.OPC_NS_FLAT)
{
try { srv.BrowseOPCItemIDs(OPCBROWSETYPE.OPC_FLAT, "", 0, 0, out es); }
catch (COMException) { return; }
IterateOPCItems(srv, root, es);
}
es = null;
}
private BrowseElement[] GetElements(int elementsFound, ItemIdentifier itemID, BrowseFilters filters, bool branches, ref BrowsePosition position)
{
EnumString enumString = null;
if (position == null)
{
IOPCBrowseServerAddressSpace iOPCBrowseServerAddressSpace = (IOPCBrowseServerAddressSpace)m_server;
OPCNAMESPACETYPE pNameSpaceType = OPCNAMESPACETYPE.OPC_NS_HIERARCHIAL;
try
{
iOPCBrowseServerAddressSpace.QueryOrganization(out pNameSpaceType);
}
catch (Exception e)
{
throw Interop.CreateException("IOPCBrowseServerAddressSpace.QueryOrganization", e);
}
if (pNameSpaceType == OPCNAMESPACETYPE.OPC_NS_FLAT)
{
if (branches)
{
return(new BrowseElement[0]);
}
if (itemID != null && itemID.ItemName != null && itemID.ItemName.Length > 0)
{
throw new ResultIDException(ResultID.Da.E_UNKNOWN_ITEM_NAME);
}
}
enumString = GetEnumerator(itemID?.ItemName, filters, branches, pNameSpaceType == OPCNAMESPACETYPE.OPC_NS_FLAT);
}
else
{
enumString = position.Enumerator;
}
ArrayList arrayList = new ArrayList();
BrowseElement browseElement = null;
int num = 0;
string[] array = null;
if (position != null)
{
num = position.Index;
array = position.Names;
position = null;
}
do
{
if (array != null)
{
for (int i = num; i < array.Length; i++)
{
if (filters.MaxElementsReturned != 0 && filters.MaxElementsReturned == arrayList.Count + elementsFound)
{
position = new BrowsePosition(itemID, filters, enumString, branches);
position.Names = array;
position.Index = i;
break;
}
browseElement = GetElement(itemID, array[i], filters, branches);
if (browseElement == null)
{
break;
}
arrayList.Add(browseElement);
}
}
if (position != null)
{
break;
}
array = enumString.Next(10);
num = 0;
}while (array != null && array.Length > 0);
if (position == null)
{
enumString.Dispose();
}
return((BrowseElement[])arrayList.ToArray(typeof(BrowseElement)));
}
private BrowseElement[] GetElements(int elementsFound, ItemIdentifier itemID, BrowseFilters filters, bool branches, ref OpcCom.Da20.BrowsePosition position)
{
EnumString enumerator = null;
if (position == null)
{
IOPCBrowseServerAddressSpace server = (IOPCBrowseServerAddressSpace)base.m_server;
OPCNAMESPACETYPE pNameSpaceType = OPCNAMESPACETYPE.OPC_NS_HIERARCHIAL;
try
{
server.QueryOrganization(out pNameSpaceType);
}
catch (Exception exception)
{
throw OpcCom.Interop.CreateException("IOPCBrowseServerAddressSpace.QueryOrganization", exception);
}
if ((pNameSpaceType == OPCNAMESPACETYPE.OPC_NS_FLAT) && branches)
{
return(new BrowseElement[0]);
}
enumerator = this.GetEnumerator((itemID != null) ? itemID.ItemName : null, filters, branches);
}
else
{
enumerator = position.Enumerator;
}
ArrayList list = new ArrayList();
BrowseElement element = null;
int index = 0;
string[] names = null;
if (position != null)
{
index = position.Index;
names = position.Names;
position = null;
}
Label_0089:
if (names != null)
{
for (int i = index; i < names.Length; i++)
{
if ((filters.MaxElementsReturned != 0) && (filters.MaxElementsReturned == (list.Count + elementsFound)))
{
position = new OpcCom.Da20.BrowsePosition(itemID, filters, enumerator, branches);
position.Names = names;
position.Index = i;
break;
}
element = this.GetElement(names[i], filters, branches);
if (element == null)
{
break;
}
list.Add(element);
}
}
if (position == null)
{
names = enumerator.Next(10);
index = 0;
if ((names != null) && (names.Length > 0))
{
goto Label_0089;
}
}
if (position == null)
{
enumerator.Dispose();
}
return((BrowseElement[])list.ToArray(typeof(BrowseElement)));
}