/// <summary>
/// Unmarshals and deallocates an array of OPCHDA_ATTRIBUTE structures.
/// </summary>
internal static Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection[] GetAttributeValueCollections(ref IntPtr pInput, int count, bool deallocate)
{
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection[] output = null;
if (pInput != IntPtr.Zero && count > 0)
{
output = new Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection[count];
IntPtr pos = pInput;
for (int ii = 0; ii < count; ii++)
{
output[ii] = GetAttributeValueCollection(pos, deallocate);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Hda.OPCHDA_ATTRIBUTE)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(pInput);
pInput = IntPtr.Zero;
}
}
return(output);
}
/// <summary>
/// Initializes object with the specified AttributeValueCollection object.
/// </summary>
public TsCHdaAttributeValueCollection(TsCHdaAttributeValueCollection collection)
{
attributeValues_ = new ArrayList(collection.attributeValues_.Count);
foreach (TsCHdaAttributeValue value in collection.attributeValues_)
{
attributeValues_.Add(value.Clone());
}
}
/// <summary>
/// Displays the values in an attribute collection.
/// </summary>
public void ShowDialog(TsCHdaServer server, Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection values)
{
if (server == null)
{
throw new ArgumentNullException("server");
}
attributesCtrl_.Initialize(server, values);
ShowDialog();
}
/// <summary>
/// Displays the values of an attribute.
/// </summary>
public void Initialize(TsCHdaServer server, Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection values)
{
mServer_ = server;
attributesLv_.Items.Clear();
if (values != null)
{
foreach (Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValue value in values)
{
AddListItem(value);
}
AdjustColumns();
}
}
/// <summary>
/// Unmarshals and deallocates an OPCHDA_ATTRIBUTE structure.
/// </summary>
internal static Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection GetAttributeValueCollection(IntPtr pInput, bool deallocate)
{
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection output = null;
if (pInput != IntPtr.Zero)
{
object item = Marshal.PtrToStructure(pInput, typeof(OpcRcw.Hda.OPCHDA_ATTRIBUTE));
output = GetAttributeValueCollection((OpcRcw.Hda.OPCHDA_ATTRIBUTE)item, deallocate);
if (deallocate)
{
Marshal.DestroyStructure(pInput, typeof(OpcRcw.Hda.OPCHDA_ATTRIBUTE));
}
}
return(output);
}
/// <summary>
/// Unmarshals and deallocates an OPCHDA_ATTRIBUTE structure.
/// </summary>
internal static Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection GetAttributeValueCollection(OpcRcw.Hda.OPCHDA_ATTRIBUTE input, bool deallocate)
{
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection output = new Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection();
output.AttributeID = input.dwAttributeID;
object[] values = Com.Interop.GetVARIANTs(ref input.vAttributeValues, input.dwNumValues, deallocate);
DateTime[] timestamps = Technosoftware.DaAeHdaClient.Utilities.Interop.GetDateTimes(ref input.ftTimeStamps, input.dwNumValues, deallocate);
for (int ii = 0; ii < input.dwNumValues; ii++)
{
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValue value = new Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValue();
value.Value = values[ii];
value.Timestamp = timestamps[ii];
output.Add(value);
}
return(output);
}
/// <summary>
/// Called when an asynchronous read attributes request completes.
/// </summary>
public void OnReadAttributeComplete(
int dwTransactionID,
int hrStatus,
int hClient,
int dwNumItems,
OPCHDA_ATTRIBUTE[] pAttributeValues,
int[] phrErrors)
{
try
{
lock (this)
{
// lookup request transaction.
Request request = (Request)m_requests[dwTransactionID];
if (request == null)
{
return;
}
// create item object to collect results.
TsCHdaItemAttributeCollection item = new TsCHdaItemAttributeCollection();
item.ServerHandle = hClient;
// unmarshal results.
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection[] results = new Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection[pAttributeValues.Length];
for (int ii = 0; ii < pAttributeValues.Length; ii++)
{
results[ii] = Interop.GetAttributeValueCollection(pAttributeValues[ii], false);
results[ii].Result = Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(phrErrors[ii]);
item.Add(results[ii]);
}
// invoke callback - remove request if all results arrived.
if (request.InvokeCallback(item))
{
m_requests.Remove(request.RequestID);
}
}
}
catch (Exception exception)
{
HandleException(dwTransactionID, exception);
}
}
/// <summary>
/// Returns the value of the specified field.
/// </summary>
private object GetFieldValue(object attribute, int fieldId)
{
// display result code.
if (typeof(IOpcResult).IsInstanceOfType(attribute))
{
switch (fieldId)
{
case NumberResult: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection)attribute).Result); }
}
}
// displaying attribute descriptions.
if (typeof(Technosoftware.DaAeHdaClient.Hda.TsCHdaAttribute).IsInstanceOfType(attribute))
{
if (attributesLv_.CheckBoxes)
{
switch (fieldId)
{
case NumberName: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttribute)attribute).Name); }
}
}
else
{
switch (fieldId)
{
case NumberName: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttribute)attribute).Name); }
case NumberDataType: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttribute)attribute).DataType); }
case NumberDescription: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttribute)attribute).Description); }
}
}
}
// displaying attribute results.
if (typeof(Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection).IsInstanceOfType(attribute))
{
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection collection = (Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValueCollection)attribute;
switch (fieldId)
{
case NumberName:
{
Technosoftware.DaAeHdaClient.Hda.TsCHdaAttribute description = mServer_.Attributes.Find(collection.AttributeID);
if (description != null)
{
return(description.Name);
}
return(null);
}
case NumberNumValues:
{
if (collection.Count > 1)
{
return(collection.Count);
}
return(null);
}
case NumberValue:
{
if (collection.Count == 1)
{
return(collection[0].Value);
}
return(null);
}
}
}
// displaying attribute values.
if (typeof(Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValue).IsInstanceOfType(attribute))
{
switch (fieldId)
{
case NumberTimestamp: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValue)attribute).Timestamp); }
case NumberValue: { return(((Technosoftware.DaAeHdaClient.Hda.TsCHdaAttributeValue)attribute).Value); }
}
}
return(null);
}
