Convert from Price

Question

Im attempting to Convert a Price (from an API (code below)).

public class Price
{
    public Price();
    public Price(double data);
    public Price(double data, int decimalPadding);
}

What I would like to do is compare the price from this API to a Double. Simply trying to convert to Double isnt working as I would have hoped.

Double bar = 21.75;
Price price = new Price();

if (Convert.ToDouble(price) >= bar) {
//code
}

when I try something like this, I believe it says the value must be lower than infinity.

How can I convert this price so they can be compared?

Answer 1

You would need a property in your price object that returns the double and compare that.

Answer 2

Convert.ToDouble cannot magically convert a Price object to a double, unless Price implements IConvertible.

Answer 3

You could use an implicit operator to convert to double. This is as per the MSDN for "implicit" operator in C#.

E.g.

class Price
{
    public static implicit operator double (Price d)
    {
        return d.data;
    }
    public static implicit operator Price (double d)
    {
        return new Price(d);
    }
}

Alternatively, for your comparisons, implement IComparable<double> and IEquatable<double> on your Price class then use the CompareTo instead and/or another operator overload.