public void modifyItem(DataItem aItem, string aNewNodeId, int aNewSampling)
{
bool lChange = false;
if (aItem.mNodeId.ToString().Equals(aNewNodeId, StringComparison.Ordinal) == false)
{
NodeId lNewNodeId = new NodeId(aNewNodeId);
if (Connected)
{
byte lAccess;
object lValue;
StatusCode lStatusCode;
string lType;
bool lArray;
checkVariable(lNewNodeId, out lAccess, out lValue, out lStatusCode, out lType, out lArray);
mItemListLock.EnterWriteLock();
//========================================
try
{
removeItemFromSubscription(aItem);
aItem.mNodeId = lNewNodeId;
addItemToSubscription(aItem);
aItem.setAccess(lAccess);
aItem.StatusCode = lStatusCode;
if ((lAccess == AccessLevels.CurrentRead || lAccess == AccessLevels.CurrentReadOrWrite) && StatusCode.IsGood(lStatusCode) && lValue != null)
{
aItem.mValue = lValue;
}
else
{
aItem.initValue(lType, lArray);
}
}
finally
{
//========================================
mItemListLock.ExitWriteLock();
}
}
else
{
aItem.mNodeId = lNewNodeId;
}
lChange = true;
}
if (aItem.mSampling != aNewSampling)
{
aItem.mSampling = aNewSampling;
mSubscription.FindItemByClientHandle(aItem.mClientHandle).SamplingInterval = aNewSampling;
mSubscription.ApplyChanges();
lChange = true;
}
if (lChange)
{
aItem.raisePropertiesChanged();
if (aItem.Access.HasFlag(EAccess.READ))
{
aItem.raiseValueChanged();
}
}
}
public DataItem addItem(string aNodeId, int aSampling)
{
if (String.IsNullOrWhiteSpace(aNodeId))
{
throw new ArgumentException("Item NodeId is empty. ");
}
DataItem lItem = new DataItem();
lItem.mConnection = this;
lItem.mSampling = aSampling;
lItem.mNodeId = new NodeId(aNodeId);
if (mConnected)
{
byte lAccess;
object lValue;
StatusCode lStatusCode;
string lType;
bool lArray;
checkVariable(lItem.mNodeId, out lAccess, out lValue, out lStatusCode, out lType, out lArray);
lItem.setAccess(lAccess);
lItem.StatusCode = lStatusCode;
if ((lAccess == AccessLevels.CurrentRead || lAccess == AccessLevels.CurrentReadOrWrite) && StatusCode.IsGood(lStatusCode) && lValue != null)
{
lItem.mValue = lValue;
}
else
{
lItem.initValue(lType, lArray);
}
}
mItemListLock.EnterWriteLock();
//========================================
try
{
if (mConnected)
{
addItemToSubscription(lItem);
}
mItemList.Add(lItem);
}
finally
{
//========================================
mItemListLock.ExitWriteLock();
}
lItem.raisePropertiesChanged();
if (lItem.Access.HasFlag(EAccess.READ))
{
lItem.raiseValueChanged();
}
ConnectionState += new EventHandler(lItem.onConnectionStateChanged);
return(lItem);
}