Question

So I’m learning and practicing WP7 application development.

I’m working with integers (currency), and it seems to always display four integers after the decimal place. I’m trying to cut it down to just either ONE or TWO decimal places.

I’ve been trying to use the "my variable.ToString("C2")" (C for Currency, 2 for number of ints after the decimal)

I’m probably missing something obvious, but please help

Answer 1

The “C” format string defines the currency specifier as described on MSDN. This will include the currency symbol for the current culture, or for a specific culture if supplied, e.g.

double amount = 1234.5678;
string formatted = amount.ToString("C", CultureInfo.CreateSpecificCulture("en-US"));
// This gives $1234.56

In your case, it seems that you have a limited set of currency symbols that you support, so I would suggest using the fixed point format specifier “F” instead. By default this will give you 2 decimal points, but you can specify a number to vary this, e.g.

double amount = 1234.5678;
string formatted = amount.ToString("F");
// This gives 1234.56
formatted = amount.ToString("F3");
// This gives 1234.567

Using the fixed point specifier will give you control over the number of decimal points and enable you to concatenate the currency symbol.