Question

I have a function as under

private double RoundOff(object value)

    {
        return Math.Round((double)value, 2);
    }

And I am invoking it as under

decimal  dec = 32.464762931906M;
var res = RoundOff(dec);

I am gettingthe below error

Specified cast is not valid

What is the mistake?

Thanks

Answer 1

Casting the object to double will attempt to unbox the object as a double, but the boxed object is a decimal. You need to convert it to a double after first unboxing it. Then you perform the rounding:


Math.Round((double)(decimal)value, 2);