private void ObjOPCGroup_AsyncReadComplete(int TransactionID, int NumItems, ref System.Array ClientHandles, ref System.Array ItemValues, ref System.Array Qualities, ref System.Array TimeStamps, ref System.Array Errors)
{
try
{
int index = 0;
for (index = 1; index <= NumItems; index++)
{
List_Values[(int)ClientHandles.GetValue(index) - 1] = ItemValues.GetValue(index);
// send to Tag
Tags[List_TagName[(int)ClientHandles.GetValue(index) - 1]].TagValue = ItemValues.GetValue(index);
//Array_Values(ClientHandles(index)) = index
}
if (DataArrivalEvent != null)
{
Evargs = new OPCDataUpdatedEventArgs();
for (int i = 0; i < List_Values.Count; i++)
{
if (!Tag.ValueEqual(Saved_List_Values[i], List_Values[i]))
{ // value update
Saved_List_Values[i] = List_Values[i];
Evargs.AddUpdateTag(List_TagName[i], List_Values[i]);
}
}
DataArrivalEvent(this, Evargs);
}
//if (ContinueReading)
//{
// AsyncReadAllData();
// LOG.Info(string.Format("{0} read again.", SourceName));
//}
}
catch (Exception ex)
{
LOG.Error(string.Format("OPCDataSource异步读取出错：{0},", ex.Message));
//WarnLog("clsDeviceOPC.ObjOPCGroup_AsyncReadComplete() " + ex.Message);
}
}
private bool SyncReadAllData()
{
int liCounter = 0;
Array gsErrors = null;
try
{
//if (!Connected)
// return false;
if (ObjOPCGroup == null)
{
return(false);
}
//int[] tempArray_ServerHanlers = new int[NoOfItems];
//Array_ServerHandlers.CopyTo(tempArray_ServerHanlers, 1);
//'ObjOPCGroup.IsSubscribed = True
object tempQualities = new object();
object timestamps = new object();
ObjOPCGroup.SyncRead((short)OPCAutomation.OPCOPCDevice, NoOfItems, ref Array_ServerHandlers,
out Array tempArray_Values, out gsErrors, out tempQualities, out timestamps);
bool HasError = false;
for (liCounter = 1; liCounter <= NoOfItems; liCounter++)
{
if ((int)gsErrors.GetValue(liCounter) == 0)
{
//Array_ServerHandlers.SetValue((int)tempArray_Values.GetValue(liCounter), liCounter);
List_Values[liCounter - 1] = tempArray_Values.GetValue(liCounter);
// send to Tag
Tags[List_TagName[liCounter - 1]].TagValue = List_Values[liCounter - 1];
}
else
{
//WarnLog("clsDeviceOPC.StartOPCClient(): Tag \'" + Array_Items[liCounter] + "\' has problem");
HasError = true;
}
}
//if (!HasError)
//{
// //MessageLog("clsDeviceOPC.StartOPCClient(): Connected to OPC device \'" + DeviceName + "\'");
// LOG.Error(" Connected to OPC group \'" + SourceName + "\'");
//}
// 数据变化通知事件
if (DataArrivalEvent != null)
{
Evargs = new OPCDataUpdatedEventArgs();
for (int i = 0; i < List_Values.Count; i++)
{
if (List_Values[i] == null || Saved_List_Values[i] == null)
{//如果空值则不比较 David 20170705
continue;
}
if (!Tag.ValueEqual(Saved_List_Values[i], List_Values[i]))
{ // value update
Saved_List_Values[i] = List_Values[i];
Evargs.AddUpdateTag(List_TagName[i], List_Values[i]);
}
}
DataArrivalEvent(this, Evargs);
}
return(!HasError);
}
catch (Exception ex)
{
//WarnLog("clsDeviceOPC.SyncReadAllData() " + ex.Message)
LOG.Error(string.Format("OPCDataSource同步读取出错：{0},", ex.Message));
return(false);
}
}
