public void ConnectedGroup_DataChange(int TransactionID, int NumItems, ref System.Array ClientHandles, ref System.Array ItemValues, ref System.Array Qualities, ref System.Array TimeStamps)
{
if (!ConnectGroupDataChangeKapat)
{
// We don't have error handling here since this is an event called from the OPC interface
try
{
short i;
for (i = 1; (i <= NumItems); i++)
{
// Use the 'Clienthandles' array returned by the server to pull out the
// index number of the control to update and load the value.
if (IsArray(ItemValues.GetValue(i).GetType()))
{
Array ItsAnArray;
int x;
string Suffix;
ItsAnArray = (System.Array)ItemValues.GetValue(i);
// Store the size of array for use by sync write
OPCItemIsArray[(int)ClientHandles.GetValue(i)] = (ItsAnArray.GetUpperBound(0) + 1);
OPCItem[(int)ClientHandles.GetValue(i)].OPCItemValue = "";
for (x = ItsAnArray.GetLowerBound(0); (x <= ItsAnArray.GetUpperBound(0)); x++)
{
if ((x == ItsAnArray.GetUpperBound(0)))
{
Suffix = "";
}
else
{
Suffix = ", ";
}
OPCItem[(int)ClientHandles.GetValue(i)].OPCItemValue = (OPCItem[(int)ClientHandles.GetValue(i)].OPCItemValue + (ItsAnArray.GetValue(x) + Suffix));
}
}
else
{
OPCItem[(int)ClientHandles.GetValue(i)].OPCItemValue = ItemValues.GetValue(i).ToString();
}
if (((OPCAutomation.OPCQuality)Qualities.GetValue(i)) == OPCAutomation.OPCQuality.OPCQualityGood)
{
OPCItem[(int)ClientHandles.GetValue(i)].OPCItemQuality = "Good";
}
else if ((((OPCAutomation.OPCQuality)Qualities.GetValue(i)) == OPCAutomation.OPCQuality.OPCQualityUncertain))
{
OPCItem[(int)ClientHandles.GetValue(i)].OPCItemQuality = "Uncertain";
}
else
{
OPCItem[(int)ClientHandles.GetValue(i)].OPCItemQuality = "Bad";
}
}
}
catch (Exception ex)
{
MessageBox.Show(("OPC DataChange failed with exception: " + ex.Message), "SimpleOPCInterface Exception", MessageBoxButtons.OK);
}
}
}
public string GetOPCItemSyncRead(string groupname, string adres)
{
SetConnectedGroup(groupname);
if ((ConnectedGroup != null))
{
List <OpcItems> items = OPCItem.FindAll(p => p != null && p != null && p.OPCItemName == adres);
try
{
// ' Read only 1 item
short ItemCount = 1;
// ' Provide storage the arrays returned by the 'SyncRead' method
int[] SyncItemServerHandles = new int[2];
System.Array SyncItemValues;
System.Array SyncItemServerErrors;
// ' Get the Servers handle for the desired item. The server handles were
// ' returned in add item subroutine.
SyncItemServerHandles[1] = (int)ItemServerHandles.GetValue(items[0].AdresNo);
// ' Invoke the SyncRead operation. Remember this call will wait until
// ' completion. The source flag in this case, 'OPCDevice' , is set to
// ' read from device which may take some time.
object timestamp = null;
object qualities = null;
System.Array syncitemserverhandles = SyncItemServerHandles.ToArray <int>();
ConnectedGroup.SyncRead((short)OPCAutomation.OPCDataSource.OPCDevice, ItemCount, ref syncitemserverhandles, out SyncItemValues, out SyncItemServerErrors, out qualities, out timestamp);
// ' Save off the value returned after checking for error
if (((int)SyncItemServerErrors.GetValue(1) == 0))
{
if (IsArray(SyncItemValues.GetValue(1).GetType()))
{
Array ItsAnArray;
int x;
string Suffix;
ItsAnArray = (System.Array)SyncItemValues.GetValue(1);
//((TextBox)OPCItemValue.GetValue(index)).Text = "";
items[0].OPCItemValue = "";
for (x = ItsAnArray.GetLowerBound(0); (x <= ItsAnArray.GetUpperBound(0)); x++)
{
if ((x == ItsAnArray.GetUpperBound(0)))
{
Suffix = "";
}
else
{
Suffix = ", ";
}
items[0].OPCItemValue = (items[0].OPCItemValue + (ItsAnArray.GetValue(x) + Suffix));
return(items[0].OPCItemValue);
}
}
else
{
items[0].OPCItemValue = SyncItemValues.GetValue(1).ToString();
return(items[0].OPCItemValue);
}
}
else
{
MessageBox.Show(("SyncItemServerError: " + SyncItemServerErrors.GetValue(1)));
}
}
catch (Exception ex)
{
MessageBox.Show("OPC server read item failed with exception: " + ex.Message, "SimpleOPCInterface Exception", MessageBoxButtons.OK);
}
}
return(string.Empty);
}
