Format string: Value 20000 to $20k?

Question

I would like to format values so that a value like 20000 would display as $20k and so on. What would be the C# format?

How are you going to display 1, 10, 999, 1000, 20100, 1000000? There are plenty of cases that you should specify for the question to be precisely answerable. — Mehrdad Afshari, Jun 15 '10 at 16:27
I think you need to give some more details. How would it display 20001? What about 500? Or 2020000? Are you basically rounding to thousands, millions, billions and displaying the number with a letter after it? — bwarner, Jun 15 '10 at 16:27
C# doesn't _have_ formats. I presume you're asking about .NET? — John Saunders, Jun 15 '10 at 16:30
To keep it simple, numbers above 999 and whole 1000's show that format. — Tony_Henrich, Jun 15 '10 at 16:49

score 7 · Answer 1 · answered May 12 '11 at 06:28

7

double amount = 20000;
string formatted = string.Format("${0:0,.0}K", amount);

answered May 12 '11 at 06:28

Andrew

91
1
3

String interpolated: `$"${amount:0,.0}K"` – orad Dec 30 '16 at 22:49
[Documentation for using `,` like that](https://learn.microsoft.com/en-us/dotnet/standard/base-types/custom-numeric-format-strings#SpecifierTh) – sirbrialliance Nov 30 '22 at 19:49

score 4 · Answer 2 · edited Jun 15 '10 at 16:34

4

I think you need to write your own function to divide by 1,000

var culture = CultureInfo.GetCultureInfo("en-US");
int amount = 20000 / 1000;
var amountString = string.Format(culture, "{0:C}K", amount);
Console.WriteLine(amountString); // $20.00

edited Jun 15 '10 at 16:34

abatishchev

98,240
88
296
433

answered Jun 15 '10 at 16:28

simendsjo

4,739
2
25
53

score 2 · Answer 3 · answered Jan 29 '13 at 22:42

I'm trying to do a similar thing, but cannot use the ToString("format") syntax in my case. This might help others though:

http://msdn.microsoft.com/en-us/library/0c899ak8.aspx#SpecifierTh

double value = 1234567890;
Console.WriteLine(value.ToString("#,##0,,", CultureInfo.InvariantCulture));
// Displays 1,235

For millions...thousands would be something like...

Console.WriteLine(value.ToString("#,##0,", CultureInfo.InvariantCulture));

score 1 · Answer 4 · answered Jun 15 '10 at 16:36

static void Main(string[] args)
        {
            int val = 20000;
            string currency = string.Format("Total: {0}",ToKdisplay (val));
        }

        private static string ToKdisplay(int val)
        {
            string result = "";
            result = val > 1000 ? string.Format("${0}K", val / 1000) : string.Format("${0}", val);
            return result;
        }

Format string: Value 20000 to $20k?

4 Answers4