private void Group_DataChange(object sender, DataChangeEventArgs eventArgs)
{
_itemAccessMutex.WaitOne();
for (int i = 0; i < eventArgs.Status.Length; ++i)
{
try
{
var itemProps = new Dictionary <string, string>();
var item = _serverModel.GetItemFromClientHandle(eventArgs.Status[i].HandleClient);
itemProps.Add(ServerModel.ItemPropValueKey, OpcUtility.ValueToString(item.Type, eventArgs.Status[i].DataValue));
itemProps.Add(ServerModel.ItemPropQualityKey, OpcUtility.QualityToString(eventArgs.Status[i].Quality));
itemProps.Add(ServerModel.ItemPropTimestampKey, OpcUtility.TimeStampToString(eventArgs.Status[i].Timestamp));
_serverModel.UpdateItem(eventArgs.Status[i].HandleClient, itemProps);
}
catch (Exception ex)
{
ErrorLog errorLog = ErrorLog.GetInstance();
errorLog.WriteToErrorLog(ex.Message, ex.StackTrace, "Error during OPC group update");
}
}
_itemAccessMutex.ReleaseMutex();
}
public void ReadItems()
{
_itemAccessMutex.WaitOne();
try
{
int l_Index = 0;
OpcItemState[] l_ItemStateArray;
List <int> l_ServerHandleList = _serverModel.GetServerHandleList();
_group.Read(OpcDataSource.OPC_DS_DEVICE, l_ServerHandleList.ToArray(), out l_ItemStateArray);
foreach (int l_ServerHandle in l_ServerHandleList)
{
if (l_ItemStateArray[l_Index].Error == HResults.S_OK)
{
int l_ClientHandle = _serverModel.GetClientHandleFromServerHandle(l_ServerHandle);
Dictionary <string, string> l_ItemProps = new Dictionary <string, string>();
IOPCItem l_Item = _serverModel.GetItemFromClientHandle(l_ClientHandle);
l_ItemProps.Add(CModel.ServerModel.ItemPropValueKey, OpcUtility.ValueToString(l_Item.Type, l_ItemStateArray[l_Index].DataValue));
l_ItemProps.Add(CModel.ServerModel.ItemPropQualityKey, OpcUtility.QualityToString(l_ItemStateArray[l_Index].Quality));
l_ItemProps.Add(CModel.ServerModel.ItemPropTimestampKey, OpcUtility.TimeStampToString(l_ItemStateArray[l_Index].Timestamp));
_serverModel.UpdateItem(l_ClientHandle, l_ItemProps);
}
l_Index++;
}
}
catch (Exception l_Ex)
{
Disconnect();
throw l_Ex;
}
finally
{
_itemAccessMutex.ReleaseMutex();
}
}