public int ReadMaxAge(int[] serverHandles, IList <TimeSpan> maxAge, int transactionId, out HRESULT[] errors)
{
int[] intMaxAge = ArrayHelpers.CreateMaxAgeArray(maxAge, maxAge.Count);
var _errors = new HRESULT[serverHandles.Length];
int result = DoComCall(ComObject, "IOpcAsyncIO3::ReadMaxAge", () =>
{
int dwCancelId;
ComObject.ReadMaxAge(serverHandles.Length, serverHandles, intMaxAge, transactionId, out dwCancelId,
out _errors);
return(dwCancelId);
}, serverHandles, maxAge, transactionId);
errors = _errors;
return(result);
}
public TimeSpan[] SetItemSamplingRate(
int[] serverHandles,
TimeSpan[] requestedSamplingRate,
out HRESULT[] errors)
{
throw new NotImplementedException();
int[] pdwRequestedSamplingRate = ArrayHelpers.CreateMaxAgeArray(requestedSamplingRate,
requestedSamplingRate.Length);
IntPtr ppdwRevisedSamplingRate;
IntPtr ppErrors;
ComObject.SetItemSamplingRate(serverHandles.Length, serverHandles, pdwRequestedSamplingRate,
out ppdwRevisedSamplingRate, out ppErrors);
return(null);
}
public OpcDaVQTE[] Read(IList <string> itemIds, IList <TimeSpan> maxAge)
{
if (maxAge == null)
{
maxAge = new TimeSpan[itemIds.Count];
}
if (itemIds.Count != maxAge.Count)
{
throw new ArgumentException("Invalid size of maxAge", "maxAge");
}
int[] intMaxAge = ArrayHelpers.CreateMaxAgeArray(maxAge, itemIds.Count);
string[] pszItemIDs = itemIds.ToArray();
var ppvValues = new object[pszItemIDs.Length];
var ppwQualities = new short[pszItemIDs.Length];
var ppftTimeStamps = new FILETIME[pszItemIDs.Length];
var ppErrors = new HRESULT[pszItemIDs.Length];
DoComCall(ComObject, "IOPCItemIO::Read", () =>
ComObject.Read(pszItemIDs.Length, pszItemIDs, intMaxAge, out ppvValues, out ppwQualities,
out ppftTimeStamps, out ppErrors), pszItemIDs.Length, pszItemIDs,
maxAge);
var result = new OpcDaVQTE[itemIds.Count];
for (int i = 0; i < ppvValues.Length; i++)
{
var vqte = new OpcDaVQTE
{
Value = ppvValues[i],
Quality = ppwQualities[i],
Timestamp = FileTimeConverter.FromFileTime(ppftTimeStamps[i]),
Error = ppErrors[i]
};
result[i] = vqte;
}
return(result);
}
public object[] ReadMaxAge(int[] serverHandles, IList <TimeSpan> maxAge, out OpcDaQuality[] qualities,
out DateTimeOffset[] timestamps, out HRESULT[] errors)
{
int[] intMaxAge = ArrayHelpers.CreateMaxAgeArray(maxAge, maxAge.Count);
object[] ppvValues = {};
short[] ppwQualities = {};
FILETIME[] ppftTimeStamps = {};
HRESULT[] _errors = {};
DoComCall(ComObject, "IOpcSyncIO2::ReadMaxAge", () =>
ComObject.ReadMaxAge(serverHandles.Length, serverHandles, intMaxAge, out ppvValues, out ppwQualities,
out ppftTimeStamps, out _errors), serverHandles.Length,
serverHandles, intMaxAge);
timestamps = new DateTimeOffset[ppftTimeStamps.Length];
qualities = new OpcDaQuality[ppwQualities.Length];
for (int i = 0; i < timestamps.Length; i++)
{
timestamps[i] = FileTimeConverter.FromFileTime(ppftTimeStamps[i]);
qualities[i] = new OpcDaQuality(ppwQualities[i]);
}
errors = _errors;
return(ppvValues);
}