[2.0] Double to Currency and back to Double

[wey97]

After a double has been formatted to currency, is there no way to convert the currency string back to a double for calculations?

I though specifying the CultureInfo may help in the conversion but it doesn't.

CultureInfo ci = Thread.CurrentThread.CurrentCulture;
double d = -56254.3856;

string strInput = String.Format(ci, "{0:c}", d);
Console.WriteLine(strInput);		// ($56,254.39)
d = Convert.ToDouble(strInput, ci);		// fails
Console.WriteLine(d);

What's the simplest way to do this?