public OpcGroup AddGroup(string groupName)
{
OpcGroup _group = new OpcGroup {
IsActive = true, Name = groupName, UpdateRate = new TimeSpan(0, 0, 0, 0, _options.DefaultMonitorInterval)
};
var subItem = new OpcDa.SubscriptionState
{
Name = (++_sub).ToString(CultureInfo.InvariantCulture),
Active = true,
UpdateRate = DefaultMonitorInterval
};
var sub = _server.CreateSubscription(subItem);
Action unsubscribe = () => new Thread(o =>
_server.CancelSubscription(sub)).Start();
dic.Add(groupName, sub);
sub.DataChanged += (subscriptionHandle, requestHandle, values) =>
{
List <OpcItemValue> items = new List <OpcItemValue>();
foreach (OpcDa.ItemValueResult value in values)
{
OpcItemValue item = new OpcItemValue {
GroupName = groupName, Value = value.Value, ItemId = value.ItemName, Quality = value.Quality.ToString(), Timestamp = value.Timestamp
};
items.Add(item);
}
_group.SendValue(items);
};
return(_group);
}
