public bool Read(OPCDataSource p_Src, int[] p_ArrHSrv, out OPCItemState[] p_ArrStat)
{
p_ArrStat = null;
int l_Count = p_ArrHSrv.Length;
IntPtr l_PtrStat;
IntPtr l_PtrErr;
int l_HResult = m_IfSync.Read(p_Src, l_Count, p_ArrHSrv, out l_PtrStat, out l_PtrErr);
if (HResults.Failed(l_HResult))
{
Marshal.ThrowExceptionForHR(l_HResult);
}
int l_RunErr = (int)l_PtrErr;
int l_RunStat = (int)l_PtrStat;
if ((l_RunErr == 0) || (l_RunStat == 0))
{
Marshal.ThrowExceptionForHR(HResults.E_ABORT);
}
p_ArrStat = new OPCItemState[l_Count];
for (int i = 0; i < l_Count; ++i)
{
p_ArrStat[i] = new OPCItemState();
p_ArrStat[i].Error = Marshal.ReadInt32((IntPtr)l_RunErr);
l_RunErr += 4;
p_ArrStat[i].HandleClient = Marshal.ReadInt32((IntPtr)l_RunStat);
if (HResults.Succeeded(p_ArrStat[i].Error))
{
short l_VT = Marshal.ReadInt16((IntPtr)(l_RunStat + 16));
if (l_VT == (short)VarEnum.VT_ERROR)
{
p_ArrStat[i].Error = Marshal.ReadInt32((IntPtr)(l_RunStat + 24));
}
p_ArrStat[i].Timestamp = Marshal.ReadInt64((IntPtr)(l_RunStat + 4));
p_ArrStat[i].Quality = Marshal.ReadInt16((IntPtr)(l_RunStat + 12));
p_ArrStat[i].DataValue = Marshal.GetObjectForNativeVariant((IntPtr)(l_RunStat + 16));
DummyVariant.VariantClear((IntPtr)(l_RunStat + 16));
}
else
{
p_ArrStat[i].DataValue = null;
}
l_RunStat += 32;
}
Marshal.FreeCoTaskMem(l_PtrStat);
Marshal.FreeCoTaskMem(l_PtrErr);
return(l_HResult == HResults.S_OK);
}
public OpcValueImpl(
OPCServer aServer,
string aName = "",
OPCDataSource aSource = OPCDataSource.OPCCache,
int aUpdateRate = 100)
{
if (aServer == null) {
throw new ArgumentNullException("aServer");
}
Source = aSource;
server = aServer;
Name = aName;
UpdateRate = aUpdateRate;
}
public OpcValueImpl(
OPCServer aServer,
string aName = "",
OPCDataSource aSource = OPCDataSource.OPCCache,
int aUpdateRate = 100)
{
if (aServer == null)
{
throw new ArgumentNullException("aServer");
}
Source = aSource;
server = aServer;
Name = aName;
UpdateRate = aUpdateRate;
}
public void Refresh2(OPCDataSource p_SourceMode, int p_TransactionID, out int p_CancelID)
{
m_IfAsync.Refresh2(p_SourceMode, p_TransactionID, out p_CancelID);
}