public void TableChanged(UspTableVersionChangeTrackingReturnModel table)
{
// get all the subscribers
try
{
var subscriberKeys = (from c in Subscribers
select c.Key).ToList();
for (int i = subscriberKeys.Count - 1; i >= 0; i--)
{
var KeyValue = subscriberKeys.ElementAt(i);
IEventNotificationCallback callback = Subscribers[KeyValue];
if (((ICommunicationObject)callback).State == CommunicationState.Opened)
{
//call back only those subscribers who are interested in this fileType
if (string.Equals(KeyValue.TableInterested, table.Name, StringComparison.OrdinalIgnoreCase))
{
callback.PublishTableChange(table.Name);
}
}
else
{
//These subscribers are no longer active. Delete them from subscriber list
subscriberKeys.Remove(KeyValue);
Subscribers.Remove(KeyValue);
}
}
}
catch (Exception ex)
{
Logger.Error(ex, ex.Message);
throw;
}
}
public void Subscribe(string id, string tableName)
{
try
{
IEventNotificationCallback callback = OperationContext.Current.GetCallbackChannel <IEventNotificationCallback>();
lock (locker)
{
Subscriber subscriber = new Subscriber();
subscriber.Id = id;
subscriber.TableInterested = tableName;
Subscribers.Add(subscriber, callback);
}
}
catch (Exception ex)
{
Logger.Error(ex, ex.Message);
throw;
}
}
