private void ImportOPCChannels(IOPCBrowseServerAddressSpace srv, TreeNodeCollection root)
{
srv.QueryOrganization(out OPCNAMESPACETYPE nsType);
OpcRcw.Da.IEnumString es;
if (nsType == OPCNAMESPACETYPE.OPC_NS_HIERARCHIAL)
{
try { srv.BrowseOPCItemIDs(OPCBROWSETYPE.OPC_BRANCH, string.Empty, 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)
{
EventscadaException?.Invoke(GetType().Name, 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, string.Empty); }
catch (Exception e)
{
EventscadaException?.Invoke(GetType().Name, 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, string.Empty, 0, 0, out es); }
catch (COMException) { return; }
IterateOPCItems(srv, root, es);
}
else if (nsType == OPCNAMESPACETYPE.OPC_NS_FLAT)
{
try { srv.BrowseOPCItemIDs(OPCBROWSETYPE.OPC_FLAT, string.Empty, 0, 0, out es); }
catch (COMException) { return; }
IterateOPCItems(srv, root, es);
}
es = null;
}
public void Connect(string clsidOPCserver)
{
this.Disconnect();
Type typeFromProgID = Type.GetTypeFromProgID(clsidOPCserver);
if (typeFromProgID == null)
{
Marshal.ThrowExceptionForHR(-1073479663);
}
this.OPCserverObj = Activator.CreateInstance(typeFromProgID);
this.ifServer = (IOPCServer)this.OPCserverObj;
if (this.ifServer == null)
{
Marshal.ThrowExceptionForHR(-2147220992);
}
this.ifCommon = (IOPCCommon)this.OPCserverObj;
this.ifBrowse = (IOPCBrowseServerAddressSpace)this.ifServer;
this.ifItmProps = (IOPCItemProperties)this.ifServer;
this.cpointcontainer = (IConnectionPointContainer)this.OPCserverObj;
this.AdviseIOPCShutdown();
}
private void OnConnect(object sender, EventArgs e)
{
string serverName = serversComboBox.Text;
Type t;
if (localServerButton.Checked)
{
t = Type.GetTypeFromProgID(serverName);
}
else
{
t = Type.GetTypeFromProgID(serverName, serverTextBox.Text);
}
object obj = Activator.CreateInstance(t);
IOPCBrowseServerAddressSpace srv = (IOPCBrowseServerAddressSpace)obj;
//IntPtr statusPtr;
//server.GetStatus(out statusPtr);
//OPCSERVERSTATUS status = (OPCSERVERSTATUS)Marshal.PtrToStructure(statusPtr, typeof(OPCSERVERSTATUS));
//statusPtr = IntPtr.Zero;
if (srv != null)
{
try
{
for (; ;)
{
srv.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_UP, "");
}
}
catch (COMException) { };
channelsTree.Nodes.Clear();
ImportOPCChannels(srv, channelsTree.Nodes);
}
channelsTree.AfterCheck += new TreeViewEventHandler(channelsTree_AfterCheck);
groupBox1.Enabled = false;
connectButton.Enabled = false;
}
public bool Connect()
{
if (_opcServerObj != null)
{
Dispose();
}
if (string.IsNullOrEmpty(_serverIP))
{
_serverIP = null;
}
Guid cid;
Type svrComponenttype = Guid.TryParse(_clsidOPCserver, out cid) ? Type.GetTypeFromCLSID(cid, _serverIP, false)
: Type.GetTypeFromProgID(_clsidOPCserver, _serverIP, false);
if (svrComponenttype == null)
{
return(false);
}
try
{
_opcServerObj = Activator.CreateInstance(svrComponenttype);
}
catch (Exception err)
{
if (err.Message != null)
{
}
return(false);
}
_opcServer = (IOPCServer)_opcServerObj;
_opcProp = (IOPCItemProperties)_opcServerObj;
_opcBrowser = (IOPCBrowseServerAddressSpace)_opcServerObj;
Guid sinkguid = typeof(IOPCShutdown).GUID;
((IConnectionPointContainer)_opcServerObj).FindConnectionPoint(ref sinkguid, out _shutDownPoint);
if (_shutDownPoint == null)
{
return(false);
}
try
{
_shutDownPoint.Advise(this, out _shutDownCookie);
}
catch (COMException err)
{
_opcServerObj = null;
_opcServer = null;
_shutDownPoint = null;
return(false);
}
if (_metaGroups.Count > 0 && _groups.Count == 0)
{
foreach (var metagrp in _metaGroups)
{
var grp = AddGroup(metagrp.Name, metagrp.ID, metagrp.UpdateRate, metagrp.DeadBand, metagrp.Active);
if (grp != null)
{
grp.AddItems(_dataServer.MetaDataList);
}
}
}
return(true);
}
/// <summary>
/// Получает дерево тегов OPC DA сервера
/// </summary>
/// <param name="parentDirectory">При первом вызове передать null -
/// будеть создана корневая директория</param>
/// <param name="server"></param>
void BuildTreeTags(ref OpcDaDirectory parentDirectory, IOPCBrowseServerAddressSpace server)
{
opcproxy.IEnumString ptrEnum;
uint cnt;
string strName;
string szItemID;
if (parentDirectory == null)
{
parentDirectory = new OpcDaDirectory(); // Создаём корневую директорию
}
// Получаем все теги
server.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_LEAF, "", (ushort)VarEnum.VT_EMPTY, 0, out ptrEnum);
ptrEnum.RemoteNext(1, out strName, out cnt);
while (cnt != 0)
{
// получаем полный идентификатор тега
server.GetItemID(strName, out szItemID);
parentDirectory.Items.Add(new OpcDaTag(szItemID, strName, parentDirectory));
ptrEnum.RemoteNext(1, out strName, out cnt);
}
// Получем директории
server.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_BRANCH, "", 1, 0, out ptrEnum);
ptrEnum.RemoteNext(1, out strName, out cnt);
while (cnt != 0)
{
server.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_DOWN, strName);
var childDirectory = new OpcDaDirectory(strName, parentDirectory);
parentDirectory.Items.Add(childDirectory);
BuildTreeTags(ref childDirectory, server);
server.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_UP, strName);
ptrEnum.RemoteNext(1, out strName, out cnt);
}
}
public void Disconnect()
{
if( ! (shutdowncpoint == null) )
{
if( shutdowncookie != 0 )
{
shutdowncpoint.Unadvise( shutdowncookie );
shutdowncookie = 0;
}
int rc = Marshal.ReleaseComObject( shutdowncpoint );
shutdowncpoint = null;
}
cpointcontainer = null;
ifBrowse = null;
ifItmProps = null;
ifCommon = null;
ifServer = null;
if( ! (OPCserverObj == null) )
{
int rc = Marshal.ReleaseComObject( OPCserverObj );
OPCserverObj = null;
}
}
public void Connect( string clsidOPCserver )
{
Disconnect();
Type typeofOPCserver = Type.GetTypeFromProgID( clsidOPCserver );
if( typeofOPCserver == null )
Marshal.ThrowExceptionForHR( HRESULTS.OPC_E_NOTFOUND );
OPCserverObj = Activator.CreateInstance( typeofOPCserver );
ifServer = (IOPCServer) OPCserverObj;
if( ifServer == null )
Marshal.ThrowExceptionForHR( HRESULTS.CONNECT_E_NOCONNECTION );
// connect all interfaces
ifCommon = (IOPCCommon) OPCserverObj;
ifBrowse = (IOPCBrowseServerAddressSpace) ifServer;
ifItmProps = (IOPCItemProperties) ifServer;
cpointcontainer = (UCOMIConnectionPointContainer) OPCserverObj;
AdviseIOPCShutdown();
}
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 EnumString GetEnumerator(string itemID, BrowseFilters filters, bool branches, bool flat)
{
IOPCBrowseServerAddressSpace iOPCBrowseServerAddressSpace = (IOPCBrowseServerAddressSpace)m_server;
if (!flat)
{
string text = (itemID != null) ? itemID : "";
try
{
iOPCBrowseServerAddressSpace.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_TO, text);
}
catch
{
try
{
iOPCBrowseServerAddressSpace.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_DOWN, text);
}
catch
{
try
{
while (true)
{
iOPCBrowseServerAddressSpace.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_UP, string.Empty);
}
}
catch
{
}
string[] array = null;
lock (m_separatorsLock)
{
array = ((m_separators == null) ? text.Split(m_separators) : text.Split(m_separators));
}
for (int i = 0; i < array.Length; i++)
{
if (array[i] != null && array[i].Length != 0)
{
try
{
iOPCBrowseServerAddressSpace.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_DOWN, array[i]);
}
catch
{
throw new ResultIDException(ResultID.Da.E_UNKNOWN_ITEM_NAME, "Cannot browse because the server is not compliant because it does not support the BROWSE_TO function.");
}
}
}
}
}
}
try
{
IEnumString ppIEnumString = null;
OPCBROWSETYPE dwBrowseFilterType = branches ? OPCBROWSETYPE.OPC_BRANCH : OPCBROWSETYPE.OPC_LEAF;
if (flat)
{
dwBrowseFilterType = OPCBROWSETYPE.OPC_FLAT;
}
iOPCBrowseServerAddressSpace.BrowseOPCItemIDs(dwBrowseFilterType, (filters.ElementNameFilter != null) ? filters.ElementNameFilter : "", 0, 0, out ppIEnumString);
return(new EnumString(ppIEnumString));
}
catch
{
throw new ResultIDException(ResultID.Da.E_UNKNOWN_ITEM_NAME);
}
}
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)));
}
