public static IList <AttributeAndDeviceItem> GetValueAndDeviceItemsWithAttribute(DeviceItemComposition aDeviceItems, string aAttributeName)
{
List <AttributeAndDeviceItem> returnDeviceItems = new List <AttributeAndDeviceItem>();
IList <AttributeAndDeviceItem> addDeviceItems;
if (aDeviceItems != null)
{
foreach (DeviceItem currentDeviceItem in aDeviceItems)
{
try
{
object attributeValue = currentDeviceItem.GetAttribute(aAttributeName);
AttributeAndDeviceItem newItem = new AttributeAndDeviceItem();
newItem.Name = aAttributeName;
newItem.Value = attributeValue;
newItem.DeviceItem = currentDeviceItem;
returnDeviceItems.Add(newItem);
}
catch (EngineeringNotSupportedException)
{
}
catch (Exception ex)
{
Program.FaultMessage("Could not get Attribute", ex, "Service.GetValueAndDeviceItemsWithAttribute");
}
//check sub DeviceItems - recursive
addDeviceItems = GetValueAndDeviceItemsWithAttribute(currentDeviceItem.DeviceItems, aAttributeName);
returnDeviceItems.AddRange(addDeviceItems);
}
}
return(returnDeviceItems);
}
public static AttributeAndDeviceItem Get1ValueAndDeviceItemWithAttribute(DeviceItemComposition aDeviceItems, string aAttributeName)
{
AttributeAndDeviceItem returnDeviceItem;
if (aDeviceItems != null)
{
foreach (DeviceItem currentDeviceItem in aDeviceItems)
{
try
{
object attributeValue = currentDeviceItem.GetAttribute(aAttributeName);
returnDeviceItem = new AttributeAndDeviceItem();
returnDeviceItem.Name = aAttributeName;
returnDeviceItem.Value = attributeValue;
returnDeviceItem.DeviceItem = currentDeviceItem;
return(returnDeviceItem);
}
catch (EngineeringNotSupportedException)
{
}
catch (Exception ex)
{
Program.FaultMessage("Could not get Attribute", ex, "Service.Get1ValueAndDeviceItemWithAttribute");
}
//check sub DeviceItems - recursive
returnDeviceItem = Get1ValueAndDeviceItemWithAttribute(currentDeviceItem.DeviceItems, aAttributeName);
if (returnDeviceItem != null)
{
return(returnDeviceItem);
}
}
}
return(null);
}
