public ErrorMessage Specify(ProcessVarDouble pv, double aValue)
{
ErrorMessage retMsg = null;
if (pv.HasValueOf(aValue))
{
return(retMsg);
}
else
{
retMsg = CheckSpecifiedValueRange(pv, aValue);
if (retMsg != null)
{
return(retMsg);
}
}
//remember currently being specified variable value
double oldValue = pv.Value;
beingSpecifiedProcVar = pv;
pv.Value = aValue;
pv.State = VarState.Specified;
try {
unitOpSystem.OnCalculationStarted(); //must tell UI calculation has started already
HasBeenModified(true);
unitOpSystem.OnCalculationEnded(); //must tell UI calculation has ended already
}
catch (Exception e) {
pv.Value = oldValue;
retMsg = HandleException(e);
//HasBeenModified(true);
}
OnProcessVarValueCommitted(pv);
return(retMsg);
}
