// Token: 0x06000006 RID: 6 RVA: 0x00002170 File Offset: 0x00000370
public bool Read(string[] sItemIDArray, out object[] oValueArray, out short[] wQualityArray, out OpcRcw.Da.FILETIME[] fTimeArray, out int[] nErrorArray)
{
int num = sItemIDArray.Count <string>();
int[] array = new int[num];
for (int i = 0; i < num; i++)
{
array[i] = 0;
}
int[] array2 = new int[num];
oValueArray = new object[num];
wQualityArray = new short[num];
fTimeArray = new OpcRcw.Da.FILETIME[num];
nErrorArray = new int[num];
bool result;
try
{
IOPCItemIO iopcitemIO = (IOPCItemIO)this.m_OPCServer;
IntPtr intPtr;
IntPtr intPtr2;
IntPtr intPtr3;
IntPtr intPtr4;
iopcitemIO.Read(num, sItemIDArray, array, out intPtr, out intPtr2, out intPtr3, out intPtr4);
IntPtr intPtr5 = intPtr;
IntPtr ptr = intPtr3;
Marshal.Copy(intPtr4, nErrorArray, 0, num);
Marshal.Copy(intPtr2, wQualityArray, 0, num);
for (int j = 0; j < num; j++)
{
if (array2[j] == 0)
{
oValueArray[j] = Marshal.GetObjectForNativeVariant(intPtr5);
}
else
{
oValueArray[j] = "Error Value";
}
fTimeArray[j] = (OpcRcw.Da.FILETIME)Marshal.PtrToStructure(ptr, typeof(OpcRcw.Da.FILETIME));
DxpSimpleClass.VariantClear(intPtr5);
Marshal.DestroyStructure(ptr, typeof(OpcRcw.Da.FILETIME));
intPtr5 = (IntPtr)(intPtr5.ToInt32() + 16);
ptr = (IntPtr)(ptr.ToInt32() + Marshal.SizeOf(typeof(OpcRcw.Da.FILETIME)));
}
Marshal.FreeCoTaskMem(intPtr);
Marshal.FreeCoTaskMem(intPtr3);
Marshal.FreeCoTaskMem(intPtr4);
Marshal.FreeCoTaskMem(intPtr2);
result = true;
}
catch (Exception ex)
{
#if DEBUG
Debug.WriteLine(ex);
#endif
result = false;
}
return(result);
}
/// <summary>
/// Reads the current values for a set of items.
/// </summary>
/// <param name="items">The set of items to read.</param>
/// <returns>The results of the read operation for each item.</returns>
public virtual TsCDaItemValueResult[] Read(TsCDaItem[] items)
{
if (items == null)
{
throw new ArgumentNullException(nameof(items));
}
lock (this)
{
string methodName = "IOPCItemIO.Read";
if (m_server == null)
{
throw new NotConnectedException();
}
int count = items.Length;
if (count == 0)
{
throw new ArgumentOutOfRangeException(nameof(items.Length), "0");
}
// initialize arguments.
string[] itemIDs = new string[count];
int[] maxAges = new int[count];
for (int ii = 0; ii < count; ii++)
{
itemIDs[ii] = items[ii].ItemName;
maxAges[ii] = (items[ii].MaxAgeSpecified) ? items[ii].MaxAge : 0;
}
IntPtr pValues = IntPtr.Zero;
IntPtr pQualities = IntPtr.Zero;
IntPtr pTimestamps = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
// invoke COM method.
try
{
IOPCItemIO server = BeginComCall <IOPCItemIO>(methodName, true);
server.Read(
count,
itemIDs,
maxAges,
out pValues,
out pQualities,
out pTimestamps,
out pErrors);
}
catch (Exception e)
{
ComCallError(methodName, e);
throw Technosoftware.DaAeHdaClient.Com.Interop.CreateException(methodName, e);
}
finally
{
EndComCall(methodName);
}
// unmarshal results.
object[] values = Technosoftware.DaAeHdaClient.Com.Interop.GetVARIANTs(ref pValues, count, true);
short[] qualities = Technosoftware.DaAeHdaClient.Com.Interop.GetInt16s(ref pQualities, count, true);
DateTime[] timestamps = Technosoftware.DaAeHdaClient.Com.Interop.GetFILETIMEs(ref pTimestamps, count, true);
int[] errors = Technosoftware.DaAeHdaClient.Com.Interop.GetInt32s(ref pErrors, count, true);
// pre-fetch the current locale to use for data conversions.
string locale = GetLocale();
// construct result array.
TsCDaItemValueResult[] results = new TsCDaItemValueResult[count];
for (int ii = 0; ii < results.Length; ii++)
{
results[ii] = new TsCDaItemValueResult(items[ii]);
results[ii].ServerHandle = null;
results[ii].Value = values[ii];
results[ii].Quality = new TsCDaQuality(qualities[ii]);
results[ii].QualitySpecified = true;
results[ii].Timestamp = timestamps[ii];
results[ii].TimestampSpecified = timestamps[ii] != DateTime.MinValue;
results[ii].Result = Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(errors[ii]);
results[ii].DiagnosticInfo = null;
// convert COM code to unified DA code.
if (errors[ii] == Result.E_BADRIGHTS)
{
results[ii].Result = new OpcResult(OpcResult.Da.E_WRITEONLY, Result.E_BADRIGHTS);
}
// convert the data type since the server does not support the feature.
if (results[ii].Value != null && items[ii].ReqType != null)
{
try
{
results[ii].Value = ChangeType(values[ii], items[ii].ReqType, locale);
}
catch (Exception e)
{
results[ii].Value = null;
results[ii].Quality = TsCDaQuality.Bad;
results[ii].QualitySpecified = true;
results[ii].Timestamp = DateTime.MinValue;
results[ii].TimestampSpecified = false;
if (e.GetType() == typeof(OverflowException))
{
results[ii].Result = Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(Result.E_RANGE);
}
else
{
results[ii].Result = Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(Result.E_BADTYPE);
}
}
}
// apply request options.
if ((filters_ & (int)TsCDaResultFilter.ItemName) == 0)
{
results[ii].ItemName = null;
}
if ((filters_ & (int)TsCDaResultFilter.ItemPath) == 0)
{
results[ii].ItemPath = null;
}
if ((filters_ & (int)TsCDaResultFilter.ClientHandle) == 0)
{
results[ii].ClientHandle = null;
}
if ((filters_ & (int)TsCDaResultFilter.ItemTime) == 0)
{
results[ii].Timestamp = DateTime.MinValue;
results[ii].TimestampSpecified = false;
}
}
// return results.
return(results);
}
}