/// <summary>
/// Writes the value of the specified item property.
/// </summary>
IdentifiedResult IDevice.Write(string itemID, PropertyID propertyID, ItemValue value)
{
// lookup item.
DeviceItem item = GetItemFromItemsByItemID(itemID);
if (item == null)
{
return(new IdentifiedResult(itemID, ResultID.Da.E_UNKNOWN_ITEM_NAME));
}
// write value.
return(item.Write(propertyID, value));
}
/// <summary>
/// Reads the value of the specified item property.
/// </summary>
ItemValueResult IDevice.Read(string itemID, PropertyID propertyID)
{
// initialize result.
ItemValueResult result = new ItemValueResult
{
ItemName = itemID,
ItemPath = null,
ResultID = ResultID.S_OK,
DiagnosticInfo = null
};
// lookup item.
DeviceItem item = GetItemFromItemsByItemID(itemID);
if (item == null)
{
result.ResultID = ResultID.Da.E_UNKNOWN_ITEM_NAME;
return(result);
}
// read value.
return(item.Read(propertyID));
}
/// <summary>
/// Returns the specified properties for the specified item.
/// </summary>
ItemPropertyCollection IDevice.GetAvailableProperties(string itemID, PropertyID[] propertyIDs, bool returnValues)
{
// initialize result.
ItemPropertyCollection properties = new ItemPropertyCollection
{
ItemName = itemID,
ItemPath = null,
ResultID = Opc.ResultID.S_OK,
DiagnosticInfo = null
};
// lookup item.
DeviceItem item = GetItemFromItemsByItemID(itemID);
if (item == null)
{
properties.ResultID = ResultID.Da.E_UNKNOWN_ITEM_NAME;
return(properties);
}
// fetch properties.
return(item.GetAvailableProperties(propertyIDs, returnValues));
}