...
ret = TheOPC.SubscribeItem(tag.Machine, tag.Server, tag.TAG, tag.UpdateRate, ITAG);
...
 
 
public static int SubscribeItem(string MachineName, string ServerClass, string ItemID, int UpdateRate, object state)
{
    return MyEasyDAClient.SubscribeItem(MachineName, ServerClass, ItemID, UpdateRate, state);
}
 
....
 
MyEasyDAClient.ItemChanged += new EventHandler<EasyDAItemChangedEventArgs (MyEasyDAClient_ItemChanged);
 
...
 
private static void MyEasyDAClient_ItemChanged(object sender, EasyDAItemChangedEventArgs e)
{
 if (RaiseItemRead != null && e != null)
 {
   if (e.Vtq != null)
    {
      RaiseItemRead(e.Vtq.Value, e.State);
     }
     else if (e.Exception != null)
     {
       InfoBaseClass.ShowInfo(e.Exception.Message);
     }
  }
}
 
 
...

  public class OPCParameters 
    {
        public int MachineReconnectDelay = 1000;
 
        public bool AllowAsynchronousMethod = true;
        public bool AllowSynchronousMethod = false; //TASK_625
        public bool Isolated = true;
        public int ItemDetach = 5000;
        public int ServerDetach = 30000; // ERA 30000
        public int TopicRead = 5000; // ERA 120000
        public int TopicWrite = 5000; // ERA 120000
 
        internal DAReadWriteMethod IDesiredMethod = DAReadWriteMethod.Synchronous; //TASK_625
        public int BrowseAccessPaths = 10000;
        public int BrowseNodes = 25000;
        public int BrowseProperties = 20000;
        public int BrowseServers = 20000;
        public int GetProperty = 3000;
        public int ReadItem = 3000; // TASK_OPC
        public int WriteItem = 10000;
        public int ReadAutomatic = -1;
        public int WriteAutomatic = -1;
 
        public int DesiredMethod
        {
            get
            {
                return (int)IDesiredMethod;
            }
            set
            {
                IDesiredMethod = (DAReadWriteMethod) value;
            }
        }
    }