private EnumString GetEnumerator(string itemID, BrowseFilters filters, bool branches)
{
EnumString str2;
IOPCBrowseServerAddressSpace server = (IOPCBrowseServerAddressSpace)base.m_server;
try
{
server.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_TO, (itemID != null) ? itemID : "");
}
catch
{
try
{
server.ChangeBrowsePosition(OPCBROWSEDIRECTION.OPC_BROWSE_DOWN, (itemID != null) ? itemID : "");
}
catch
{
throw new ResultIDException(ResultID.Da.E_UNKNOWN_ITEM_NAME);
}
}
try
{
OpcRcw.Da.IEnumString ppIEnumString = null;
server.BrowseOPCItemIDs(branches ? OPCBROWSETYPE.OPC_BRANCH : OPCBROWSETYPE.OPC_LEAF, (filters.ElementNameFilter != null) ? filters.ElementNameFilter : "", 0, 0, out ppIEnumString);
str2 = new EnumString(ppIEnumString);
}
catch
{
throw new ResultIDException(ResultID.Da.E_UNKNOWN_ITEM_NAME);
}
return(str2);
}
private void GetItemChildren(List <OPCItem> items, string szNameFilter, IOPCBrowseServerAddressSpace pParent, OPCItem parentItem = null)
{
opcprox.IEnumString pEnum;
uint cnt;
string strName;
string szItemID;
try
{
pParent.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_LEAF, szNameFilter, (ushort)VarEnum.VT_EMPTY, 0, out pEnum);
pEnum.RemoteNext(1, out strName, out cnt);
int nLeavesCount = 0;
while (cnt != 0)
{
pParent.GetItemID(strName, out szItemID); // получает полный идентификатор тега
GetItemProperties(szItemID);
items.Add(
new OPCItem()
{
Parent = parentItem,
ItemName = strName,
Enabled = true,
ItemType = OPCItemType.LEAF,
ItemID = szItemID
}
);
pEnum.RemoteNext(1, out strName, out cnt);
nLeavesCount++;
}
pParent.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_BRANCH, szNameFilter, (ushort)VarEnum.VT_EMPTY, 0, out pEnum);
pEnum.RemoteNext(1, out strName, out cnt);
int nBranchesCount = 0;
while (cnt != 0)
{
pParent.GetItemID(strName, out szItemID);
OPCItem item = new OPCItem()
{
Parent = parentItem,
ItemName = strName,
Enabled = true,
ItemType = OPCItemType.BRANCH,
ItemID = szItemID
};
items.Add(item);
pParent.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_TO, szItemID);
GetItemChildren(items, "", pParent, item);
pParent.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_UP, szItemID);
pEnum.RemoteNext(1, out strName, out cnt);
nBranchesCount++;
}
}
catch (System.Exception ex)
{
Console.Out.WriteLine(ex.Message);
}
}
/// <summary>
/// Changes the browse position.
/// </summary>
/// <param name="direction">The direction.</param>
/// <param name="name">The name.</param>
/// <returns>True if the operation was successful.</returns>
private bool ChangeBrowsePosition(OPCBROWSEDIRECTION direction, string name)
{
string methodName = "IOPCBrowseServerAddressSpace.ChangeBrowsePosition";
try
{
IOPCBrowseServerAddressSpace server = BeginComCall <IOPCBrowseServerAddressSpace>(methodName, true);
server.ChangeBrowsePosition(direction, name);
}
catch (Exception e)
{
if (ComUtils.IsUnknownError(e, ResultIds.E_FAIL, ResultIds.E_INVALIDARG))
{
ComCallError(methodName, e);
}
return(false);
}
finally
{
EndComCall(methodName);
}
return(true);
}
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 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;
}
/// <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 ChangeBrowsePosition(OPCBrowseDirection p_Direction, string p_Name)
{
m_IfBrowse.ChangeBrowsePosition(p_Direction, p_Name);
}
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);
}
}