/// <summary>
/// Creates an enumerator for the current browse position.
/// </summary>
/// <param name="branches">if set to <c>true</c> then branches are enumerated.</param>
/// <returns>The wrapped enumerator.</returns>
private EnumString CreateEnumerator(bool branches)
{
IEnumString unknown = null;
string methodName = "IOPCBrowseServerAddressSpace.BrowseOPCItemIDs";
try
{
IOPCBrowseServerAddressSpace server = BeginComCall <IOPCBrowseServerAddressSpace>(methodName, true);
OPCBROWSETYPE browseType = OPCBROWSETYPE.OPC_BRANCH;
if (!branches)
{
browseType = OPCBROWSETYPE.OPC_LEAF;
}
server.BrowseOPCItemIDs(browseType, String.Empty, 0, 0, out unknown);
}
catch (Exception e)
{
ComCallError(methodName, e);
return(null);
}
finally
{
EndComCall(methodName);
}
// wrapper the enumrator. hardcoding a buffer size of 256.
return(new EnumString(unknown, 256));
}
public List <string> Browse(OPCBROWSETYPE type = OPCBROWSETYPE.OPC_FLAT, string szFilter = "", short typeFilter = 0, OPCACCESSRIGHTS rightFilter = 0)
{
if (_opcBrowser == null)
{
return(null);
}
List <string> list = new List <string>(14000);
OPC.Data.Interface.IEnumString enumerator;
_opcBrowser.BrowseOPCItemIDs(type, szFilter, typeFilter, rightFilter, out enumerator);
if (enumerator == null)
{
return(list);
}
int cft = 0;
string[] strF = new string[1000];
do
{
enumerator.RemoteNext(1000, strF, out cft);
for (int i = 0; i < cft; i++)
{
list.Add(strF[i]);
}
} while (cft > 0);
Marshal.ReleaseComObject(enumerator);
enumerator = null;
list.TrimExcess();
return(list);
}
// extra helper
public void Browse(OPCBROWSETYPE typ, out ArrayList lst)
{
lst = null;
UCOMIEnumString enumerator;
BrowseOPCItemIDs(typ, "", VarEnum.VT_EMPTY, 0, out enumerator);
if (enumerator == null)
{
return;
}
lst = new ArrayList(500);
int cft;
string[] strF = new string[100];
int hresult;
do
{
cft = 0;
hresult = enumerator.Next(100, strF, out cft);
if (cft > 0)
{
for (int i = 0; i < cft; i++)
{
lst.Add(strF[i]);
}
}
}while(hresult == HRESULTS.S_OK);
int rc = Marshal.ReleaseComObject(enumerator);
enumerator = null;
lst.TrimToSize();
}
public void Browse(OPCBROWSETYPE typ, out ArrayList lst)
{
IEnumString str;
lst = null;
this.BrowseOPCItemIDs(typ, "", VarEnum.VT_EMPTY, 0, out str);
if (str != null)
{
int num2;
lst = new ArrayList(500);
string[] rgelt = new string[100];
do
{
//int pceltFetched = 0;
IntPtr pceltFetchedPtr = new IntPtr(0);
num2 = str.Next(100, rgelt, pceltFetchedPtr);
int pceltFetched = pceltFetchedPtr.ToInt32();
if (pceltFetched > 0)
{
for (int i = 0; i < pceltFetched; i++)
{
lst.Add(rgelt[i]);
}
}
}while (num2 == 0);
int num4 = Marshal.ReleaseComObject(str);
str = null;
lst.TrimToSize();
}
}
public void BrowseOPCItemIDs(OPCBROWSETYPE filterType, string filterCriteria, VarEnum dataTypeFilter, OPCACCESSRIGHTS accessRightsFilter, out IEnumString stringEnumerator)
{
object obj2;
stringEnumerator = null;
this.ifBrowse.BrowseOPCItemIDs(filterType, filterCriteria, (short)dataTypeFilter, accessRightsFilter, out obj2);
stringEnumerator = (IEnumString)obj2;
obj2 = null;
}
public void BrowseOPCItemIDs(OPCBROWSETYPE filterType, string filterCriteria,
VarEnum dataTypeFilter, OPCACCESSRIGHTS accessRightsFilter,
out UCOMIEnumString stringEnumerator)
{
stringEnumerator = null;
object enumtemp;
ifBrowse.BrowseOPCItemIDs(filterType, filterCriteria, (short)dataTypeFilter, accessRightsFilter, out enumtemp);
stringEnumerator = (UCOMIEnumString)enumtemp;
enumtemp = null;
}
public void BrowseOPCItemIDs(OPCBROWSETYPE dwBrowseFilterType, string szFilterCriteria, short vtDataTypeFilter, int dwAccessRightsFilter, out IEnumString ppIEnumString)
{
var methodName = nameof(IOPCBrowseServerAddressSpace) + "." + nameof(IOPCBrowseServerAddressSpace.BrowseOPCItemIDs);
try
{
var server = BeginComCall <IOPCBrowseServerAddressSpace>(methodName, true);
server.BrowseOPCItemIDs(dwBrowseFilterType, szFilterCriteria, vtDataTypeFilter, dwAccessRightsFilter, out ppIEnumString);
}
finally
{
EndComCall(methodName);
}
}
int IOPCBrowseServerAddressSpace.BrowseOPCItemIDs([In, MarshalAs(UnmanagedType.U4)] OPCBROWSETYPE dwBrowseFilterType, [In, MarshalAs(UnmanagedType.LPWStr)] string szFilterCriteria, [In, MarshalAs(UnmanagedType.U2)] short vtDataTypeFilter, [In, MarshalAs(UnmanagedType.U4)] OPCACCESSRIGHTS dwAccessRightsFilter, [MarshalAs(UnmanagedType.IUnknown)] out object ppUnk)
{
string currentTestMethod = Dottest.Framework.Stubs.CurrentTestMethod.Name;
if (currentTestMethod.Equals("TestBrowse01"))
{
EnumString enumStr = new EnumString();
enumStr.Add("DP1");
enumStr.Add("DP2");
ppUnk = enumStr;
}
else
{
ppUnk = null;
}
return(1);
}
private void listItems(OPCBROWSETYPE type, out List <string> items, out List <string> paths)
{
string szFilter = "";
items = new List <string>();
paths = new List <string>();
int m_Res;
m_Res = 0;
object pIEnumString;
m_Res = m_pIBrowse.BrowseOPCItemIDs(type, szFilter, (int)VarEnum.VT_EMPTY, 0, out pIEnumString);
if (m_Res >= 0 && pIEnumString != null)
{
if (pIEnumString is UCOMIEnumString)
{
int celt = 1;
string[] rgelt = new string[1];
int p_celtFetched = 0;
UCOMIEnumString stringArray = (UCOMIEnumString)pIEnumString;
stringArray.Reset();
int ret = stringArray.Next(celt, rgelt, out p_celtFetched);
while (p_celtFetched > 0)
{
string path = getFullPath(rgelt[0]);
items.Add(rgelt[0]);
paths.Add(path);
celt = 1;
p_celtFetched = 0;
stringArray.Next(celt, rgelt, out p_celtFetched);
}
}
else
{
throw new Exception("Browser: IEnumString is not found.");
}
}
else
{
throw new Exception("Browser: Enumeration Items error.");
}
}
/// <summary>
/// Browse items
/// </summary>
/// <param name="filterType"><see cref="OPCBROWSETYPE"/> filter, ignored for <see cref="OPCNAMESPACETYPE.OPC_NS_FLAT"/> address space.</param>
/// <param name="filterCriteria">A server specific filter string.</param>
/// <param name="dataTypeFilter">Data type filter or <see cref="VarEnum.VT_EMPTY"/></param>
/// <param name="accessRightsFilter"><see cref="OPCACCESSRIGHTS"/> filter.</param>
/// <returns></returns>
public string[] BrowseItemIDs(OPCBROWSETYPE filterType, string filterCriteria,
VarEnum dataTypeFilter, OPCACCESSRIGHTS accessRightsFilter)
{
ThrowIfDisposed();
object enumerator = null;
try
{
opcBrowseServer.BrowseOPCItemIDs(filterType, filterCriteria, (short)dataTypeFilter, accessRightsFilter, out enumerator);
return(IEnumStringToArray((IEnumString)enumerator));
}
finally
{
if (enumerator != null)
{
Marshal.ReleaseComObject(enumerator);
}
}
}
public void BrowseOPCItemIDs(OPCBROWSETYPE dwBrowseFilterType, string szFilterCriteria, short vtDataTypeFilter, int dwAccessRightsFilter, out IEnumString ppIEnumString)
{
lock (this)
{
try
{
ItemIdentifier itemID = null;
if (m_browseStack.Count > 0)
{
itemID = (ItemIdentifier)m_browseStack.Peek();
}
ArrayList arrayList = new ArrayList();
Browse(itemID, dwBrowseFilterType, szFilterCriteria, vtDataTypeFilter, dwAccessRightsFilter, arrayList);
ppIEnumString = new EnumString(arrayList);
}
catch (Exception e)
{
throw CreateException(e);
}
}
}
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);
}
}
public void BrowseOPCItemIDs(OPCBROWSETYPE dwBrowseFilterType, string szFilterCriteria, short vtDataTypeFilter, int dwAccessRightsFilter, out IEnumString ppIEnumString)
{
var methodName = nameof(IOPCBrowseServerAddressSpace) + "." + nameof(IOPCBrowseServerAddressSpace.BrowseOPCItemIDs);
try
{
var server = BeginComCall<IOPCBrowseServerAddressSpace>(methodName, true);
server.BrowseOPCItemIDs(dwBrowseFilterType, szFilterCriteria, vtDataTypeFilter, dwAccessRightsFilter, out ppIEnumString);
}
finally
{
EndComCall(methodName);
}
}
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);
}
}
// extra helper
public void Browse( OPCBROWSETYPE typ, out ArrayList lst )
{
lst = null;
UCOMIEnumString enumerator;
BrowseOPCItemIDs( typ, "", VarEnum.VT_EMPTY, 0, out enumerator );
if( enumerator == null )
return;
lst = new ArrayList( 500 );
int cft;
string[] strF = new string[100];
int hresult;
do
{
cft = 0;
hresult = enumerator.Next( 100, strF, out cft );
if( cft > 0 )
{
for( int i = 0; i < cft; i++ )
lst.Add( strF[i] );
}
}
while( hresult == HRESULTS.S_OK );
int rc = Marshal.ReleaseComObject( enumerator );
enumerator = null;
lst.TrimToSize();
}
/// <summary>
/// Browse items
/// </summary>
/// <param name="filterType"><see cref="OPCBROWSETYPE"/> filter, ignored for <see cref="OPCNAMESPACETYPE.OPC_NS_FLAT"/> address space.</param>
/// <param name="filterCriteria">A server specific filter string.</param>
/// <returns></returns>
public string[] BrowseItemIDs(OPCBROWSETYPE filterType, string filterCriteria)
{
return(BrowseItemIDs(filterType, filterCriteria, VarEnum.VT_EMPTY, OPCACCESSRIGHTS.OPC_UNKNOWN));
}
/// <summary>
/// Browse items
/// </summary>
/// <param name="filterType"><see cref="OPCBROWSETYPE"/> filter, ignored for <see cref="OPCNAMESPACETYPE.OPC_NS_FLAT"/> address space.
/// </param>
public string[] BrowseItemIDs(OPCBROWSETYPE filterType)
{
return(BrowseItemIDs(filterType, String.Empty, VarEnum.VT_EMPTY, 0));
}
public void BrowseOPCItemIDs( OPCBROWSETYPE filterType, string filterCriteria,
VarEnum dataTypeFilter, OPCACCESSRIGHTS accessRightsFilter,
out UCOMIEnumString stringEnumerator)
{
stringEnumerator = null;
object enumtemp;
ifBrowse.BrowseOPCItemIDs( filterType, filterCriteria, (short) dataTypeFilter, accessRightsFilter, out enumtemp );
stringEnumerator = (UCOMIEnumString) enumtemp;
enumtemp = null;
}
private void Browse(ItemIdentifier itemID, OPCBROWSETYPE dwBrowseFilterType, string szFilterCriteria, short vtDataTypeFilter, int dwAccessRightsFilter, ArrayList hits)
{
BrowseFilters filters = new BrowseFilters {
MaxElementsReturned = 0,
BrowseFilter = browseFilter.all,
ElementNameFilter = (dwBrowseFilterType != OPCBROWSETYPE.OPC_FLAT) ? szFilterCriteria : "",
VendorFilter = null,
ReturnAllProperties = false
};
filters.PropertyIDs = new PropertyID[] { Property.DATATYPE, Property.ACCESSRIGHTS };
filters.ReturnPropertyValues = true;
BrowseElement[] elementArray = null;
try
{
Opc.Da.BrowsePosition position = null;
elementArray = this.m_server.Browse(itemID, filters, out position);
if (position != null)
{
position.Dispose();
position = null;
}
}
catch
{
throw new ExternalException("BrowseOPCItemIDs", -2147467259);
}
foreach (BrowseElement element in elementArray)
{
if (dwBrowseFilterType == OPCBROWSETYPE.OPC_FLAT)
{
if (element.HasChildren)
{
this.Browse(new ItemIdentifier(element.ItemName), dwBrowseFilterType, szFilterCriteria, vtDataTypeFilter, dwAccessRightsFilter, hits);
}
}
else
{
if (dwBrowseFilterType == OPCBROWSETYPE.OPC_BRANCH)
{
if (element.HasChildren)
{
goto Label_00F9;
}
continue;
}
if ((dwBrowseFilterType == OPCBROWSETYPE.OPC_LEAF) && element.HasChildren)
{
continue;
}
}
Label_00F9:
if (element.IsItem)
{
if (vtDataTypeFilter != 0)
{
short type = (short)OpcCom.Interop.GetType((System.Type)element.Properties[0].Value);
if (type != vtDataTypeFilter)
{
continue;
}
}
if (dwAccessRightsFilter != 0)
{
accessRights rights = (accessRights)element.Properties[1].Value;
if (((dwAccessRightsFilter == 1) && (rights == accessRights.writable)) || ((dwAccessRightsFilter == 2) && (rights == accessRights.readable)))
{
continue;
}
}
}
if (dwBrowseFilterType != OPCBROWSETYPE.OPC_FLAT)
{
hits.Add(element.Name);
}
else if (element.IsItem && ((szFilterCriteria.Length == 0) || Opc.Convert.Match(element.ItemName, szFilterCriteria, true)))
{
hits.Add(element.ItemName);
}
}
}
