protected override IConvertible GetValue()
{
// if (!isGotValue)
// {
if (OnGetValue == null)
{
throw new InvalidOperationException("This variable is not bound to a formula, so it's value cannot be read.");
}
VariableReadEventArgs args = new VariableReadEventArgs(Name);
args.Type = Type;
OnGetValue(this, args);
if (Type != typeof(IConvertible))
{
_Value = (IConvertible)Convert.ChangeType(args.Value, Type);
}
else
{
_Value = args.Value;
}
// isGotValue = true;
// }
return(_Value);
}
protected override IConvertible GetValue()
{
// if (!isGotValue)
// {
if (OnGetValue == null)
{
throw new InvalidOperationException("This variable is not bound to a formula, so it's value cannot be read.");
}
VariableReadEventArgs args = new VariableReadEventArgs(Name);
args.Type = Type;
OnGetValue(this, args);
if (Type != typeof(IConvertible))
{
_Value = (IConvertible)Convert.ChangeType(args.Value, Type);
}
else
{
_Value = args.Value;
}
// isGotValue = true;
// }
return _Value;
}
protected void Variable_OnGetValue(object sender, VariableReadEventArgs e)
{
IConvertible value;
if (VariableValues.TryGetValue(e.Name, out value))
{
e.Value = VariableValues[e.Name];
}
else
{
throw new InvalidOperationException("The value for variable '" + e.Name + "' was not set.");
}
}
protected void GetVariableValue(object sender, VariableReadEventArgs e)
{
e.Value = xVal;
}
