/// <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);
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION direction, string name)
{
try
{
ifBrowse.ChangeBrowsePosition(direction, name);
}
catch (Exception ex)
{
throw (new Exception("ChangeBrowsePosition执行错误，不存在节点“" + name + "”，具体错误信息：" + ex.ToString()));
}
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION dwBrowseDirection, string szString)
{
var methodName = nameof(IOPCBrowseServerAddressSpace) + "." + nameof(IOPCBrowseServerAddressSpace.ChangeBrowsePosition);
try
{
var server = BeginComCall <IOPCBrowseServerAddressSpace>(methodName, true);
server.ChangeBrowsePosition(dwBrowseDirection, szString);
}
finally
{
EndComCall(methodName);
}
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION direction, string name)
{
this.ifBrowse.ChangeBrowsePosition(direction, name);
}
/// <summary>
/// Change the current browse position.
/// </summary>
/// <param name="direction">Browse direction</param>
/// <param name="name"></param>
public void ChangeBrowsePosition(OPCBROWSEDIRECTION direction, string name)
{
ThrowIfDisposed();
opcBrowseServer.ChangeBrowsePosition(direction, name);
}
void IOPCBrowseServerAddressSpace.ChangeBrowsePosition([In, MarshalAs(UnmanagedType.U4)] OPCBROWSEDIRECTION dwBrowseDirection, [In, MarshalAs(UnmanagedType.LPWStr)] string szName)
{
}
/// <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;
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION dwBrowseDirection, string szString)
{
OpcCom.Da.Wrapper.Server server;
Monitor.Enter(server = this);
try
{
BrowseElement element;
BrowseFilters filters = new BrowseFilters {
MaxElementsReturned = 0,
BrowseFilter = browseFilter.all,
ElementNameFilter = null,
VendorFilter = null,
ReturnAllProperties = false,
PropertyIDs = null,
ReturnPropertyValues = false
};
ItemIdentifier itemID = null;
Opc.Da.BrowsePosition position = null;
switch (dwBrowseDirection)
{
case OPCBROWSEDIRECTION.OPC_BROWSE_UP:
if (this.m_browseStack.Count == 0)
{
throw CreateException(-2147467259);
}
goto Label_0146;
case OPCBROWSEDIRECTION.OPC_BROWSE_DOWN:
if ((szString == null) || (szString.Length == 0))
{
throw CreateException(-2147024809);
}
goto Label_00F4;
case OPCBROWSEDIRECTION.OPC_BROWSE_TO:
if ((szString != null) && (szString.Length != 0))
{
break;
}
this.m_browseStack.Clear();
goto Label_0179;
default:
goto Label_0179;
}
itemID = new ItemIdentifier(szString);
BrowseElement[] elementArray = null;
try
{
elementArray = this.m_server.Browse(itemID, filters, out position);
}
catch (Exception)
{
throw CreateException(-2147024809);
}
if ((elementArray == null) || (elementArray.Length == 0))
{
throw CreateException(-2147024809);
}
this.m_browseStack.Clear();
this.m_browseStack.Push(null);
this.m_browseStack.Push(itemID);
goto Label_0179;
Label_00F4:
element = this.FindChild(szString);
if ((element == null) || !element.HasChildren)
{
throw CreateException(-2147024809);
}
this.m_browseStack.Push(new ItemIdentifier(element.ItemName));
goto Label_0179;
Label_0146:
itemID = (ItemIdentifier)this.m_browseStack.Pop();
if ((this.m_browseStack.Count > 0) && (this.m_browseStack.Peek() == null))
{
this.BuildBrowseStack(itemID);
}
Label_0179:
if (position != null)
{
position.Dispose();
position = null;
}
}
catch (Exception exception)
{
throw CreateException(exception);
}
finally
{
Monitor.Exit(server);
}
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION dwBrowseDirection, string szString)
{
lock (this)
{
try
{
BrowseFilters browseFilters = new BrowseFilters();
browseFilters.MaxElementsReturned = 0;
browseFilters.BrowseFilter = browseFilter.all;
browseFilters.ElementNameFilter = null;
browseFilters.VendorFilter = null;
browseFilters.ReturnAllProperties = false;
browseFilters.PropertyIDs = null;
browseFilters.ReturnPropertyValues = false;
ItemIdentifier itemIdentifier = null;
Opc.Da.BrowsePosition position = null;
switch (dwBrowseDirection)
{
case OPCBROWSEDIRECTION.OPC_BROWSE_TO:
{
if (szString == null || szString.Length == 0)
{
m_browseStack.Clear();
break;
}
itemIdentifier = new ItemIdentifier(szString);
BrowseElement[] array = null;
try
{
array = m_server.Browse(itemIdentifier, browseFilters, out position);
}
catch (Exception)
{
throw CreateException(-2147024809);
}
if (array == null || array.Length == 0)
{
throw CreateException(-2147024809);
}
m_browseStack.Clear();
m_browseStack.Push(null);
m_browseStack.Push(itemIdentifier);
break;
}
case OPCBROWSEDIRECTION.OPC_BROWSE_DOWN:
{
if (szString == null || szString.Length == 0)
{
throw CreateException(-2147024809);
}
BrowseElement browseElement = FindChild(szString);
if (browseElement == null || !browseElement.HasChildren)
{
throw CreateException(-2147024809);
}
m_browseStack.Push(new ItemIdentifier(browseElement.ItemName));
break;
}
case OPCBROWSEDIRECTION.OPC_BROWSE_UP:
if (m_browseStack.Count == 0)
{
throw CreateException(-2147467259);
}
itemIdentifier = (ItemIdentifier)m_browseStack.Pop();
if (m_browseStack.Count > 0 && m_browseStack.Peek() == null)
{
BuildBrowseStack(itemIdentifier);
}
break;
}
if (position != null)
{
position.Dispose();
position = null;
}
}
catch (Exception e)
{
throw CreateException(e);
}
}
}
public void ChangeBrowsePosition( OPCBROWSEDIRECTION direction, string name )
{
ifBrowse.ChangeBrowsePosition( direction, name );
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION browseDirection, string itemNameOrId = "")
{
DoComCall(ComObject, "IOPCBrowseServerAddressSpace::ChangeBrowsePosition",
() => ComObject.ChangeBrowsePosition(browseDirection, itemNameOrId ?? ""), browseDirection, itemNameOrId);
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION browseDirection, string itemNameOrId = "")
{
DoComCall(ComObject, "IOPCBrowseServerAddressSpace::ChangeBrowsePosition",
() => ComObject.ChangeBrowsePosition(browseDirection, itemNameOrId ?? ""), browseDirection, itemNameOrId);
}
public void ChangeBrowsePosition(OPCBROWSEDIRECTION dwBrowseDirection, string szString)
{
var methodName = nameof(IOPCBrowseServerAddressSpace) + "." + nameof(IOPCBrowseServerAddressSpace.ChangeBrowsePosition);
try
{
var server = BeginComCall<IOPCBrowseServerAddressSpace>(methodName, true);
server.ChangeBrowsePosition(dwBrowseDirection, szString);
}
finally
{
EndComCall(methodName);
}
}
