public static double GetNumericValue(IStruct structure, string name)
{
if (structure == null)
{
throw new ArgumentNullException("structure");
}
ISymbol symbol = structure.Child(name);
if (symbol == null)
{
throw new InvalidOperationException("Could not find the property " + name + " in structure " + structure.Name);
}
INumericProperty property = symbol as INumericProperty;
if (property == null)
{
throw new InvalidOperationException("Symbol " + symbol.Name + " type " + symbol.GetType().FullName + " is not the expected " + typeof(INumericProperty).FullName);
}
double result = property.Value.GetValueOrDefault();
return(result);
}
private static void DemoCode(IEditorPlugIn plugIn, IPage page)
{
IList <ISymbol> deviceNodes = plugIn.Symbol.SelectSymbols("//Device[Properties[@Name='ModelNo' and @Value='Pump']]");
IStruct temperatureSrut = Util.Properties.GetStruct(page, "Temperature");
double temperatureNominal = Util.Properties.GetNumericValue(temperatureSrut, "Nominal");
double temperatureValue = Util.Properties.GetNumericValue(temperatureSrut, "Value");
double temperatureMin = Util.Properties.GetNumericValue(temperatureSrut, "LowerLimit");
double temperatureMax = Util.Properties.GetNumericValue(temperatureSrut, "UpperLimit");
bool ready = Util.Properties.GetBoolValue(page, "Ready");
foreach (ISymbol symbol in deviceNodes)
{
ISymbol symbolFlowStruct = symbol.Child("Flow");
if (symbolFlowStruct != null)
{
IStruct structure = symbolFlowStruct as IStruct;
if (structure == null)
{
string errText = "Symbol " + symbolFlowStruct.Name + " must always be of type " + typeof(IStruct).FullName + ", but is " + symbolFlowStruct.GetType().FullName;
throw new InvalidCastException(errText);
}
ISymbol symbolFlow = structure.Child("Value");
if (symbolFlow == null)
{
throw new InvalidOperationException("Could not find the property Value in structure " + symbolFlowStruct.Name);
}
double flow = (symbolFlow as INumericProperty).Value.GetValueOrDefault();
// Pump_Name Flow Value
Trace.WriteLine(symbol.Name + "." + symbolFlowStruct.Name + "." + plugIn.Symbol.Name + " = " + flow.ToString());
}
ISymbol symbolReady = symbol.Child(SymbolName.Ready);
if (symbolReady != null)
{
INumericProperty propertyReady = symbolReady as INumericProperty;
if (propertyReady != null)
{
ready = Util.GetBool(propertyReady);
Trace.WriteLine(propertyReady.Name + " = " + ready.ToString());
if (propertyReady.Writeable)
{
// Pump_Name Ready
Trace.WriteLine(symbol.Name + "." + propertyReady.Name + " is Writable");
}
}
}
}
}