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);
}
public void BrowseAccessPaths(string szItemID, out OpcRcw.Da.IEnumString ppIEnumString)
{
OpcCom.Da.Wrapper.Server server;
Monitor.Enter(server = this);
try
{
throw new ExternalException("BrowseAccessPaths", -2147467263);
}
catch (Exception exception)
{
throw CreateException(exception);
}
finally
{
Monitor.Exit(server);
}
}
public void Clone(out OpcRcw.Da.IEnumString ppenum)
{
EnumString str;
Monitor.Enter(str = this);
try
{
ppenum = new EnumString(this.m_strings);
}
catch (Exception exception)
{
throw Server.CreateException(exception);
}
finally
{
Monitor.Exit(str);
}
}
public void BrowseOPCItemIDs(OPCBROWSETYPE dwBrowseFilterType, string szFilterCriteria, short vtDataTypeFilter, int dwAccessRightsFilter, out OpcRcw.Da.IEnumString ppIEnumString)
{
OpcCom.Da.Wrapper.Server server;
Monitor.Enter(server = this);
try
{
ItemIdentifier itemID = null;
if (this.m_browseStack.Count > 0)
{
itemID = (ItemIdentifier)this.m_browseStack.Peek();
}
ArrayList hits = new ArrayList();
this.Browse(itemID, dwBrowseFilterType, szFilterCriteria, vtDataTypeFilter, dwAccessRightsFilter, hits);
ppIEnumString = new OpcCom.Da.Wrapper.EnumString(hits);
}
catch (Exception exception)
{
throw CreateException(exception);
}
finally
{
Monitor.Exit(server);
}
}
private void IterateOPCItems(IOPCBrowseServerAddressSpace srv, TreeNodeCollection root, OpcRcw.Da.IEnumString es)
{
int fetched;
do
{
string[] tmp = new string[100];
es.RemoteNext(tmp.Length, tmp, out fetched);
for (int i = 0; i < fetched; i++)
{
AddTreeNode(srv, root, tmp[i]);
}
} while (fetched > 0);
}