Using String.Format how can i ensure all numbers have commas after every 3 digits eg 23000 = "23,000" and that 0 returns "0".
String.Format("{0:n}", 0); //gives 0.00 which i dont want. I dont want any decimal places, all numbers will be integers.
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You shouldn't use commas to separate digits, you should use (soft) spaces. Reason is that in a significant part of the world (en.wikipedia.org/wiki/File:DecimalSeparator.png) the comma is the decimal separator (radix point), and so the meaning of the comma is subjective, context dependent - see Wikipedia en.wikipedia.org/wiki/Decimal_separator#Digit_grouping.ANeves– ANeves2010-03-30 14:07:18 +00:00Commented Mar 30, 2010 at 14:07
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1You shouldn't hard-code commas, but use the locale or internationalization thousands separator. Use a comma as the default, if you want, when no locale is set.mpez0– mpez02010-03-30 14:19:01 +00:00Commented Mar 30, 2010 at 14:19
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8 Answers
You can do this, which I find a bit cleaner to read the intent of:
String.Format("{0:#,###0}", 0);
Example:
string.Format("{0:#,###0}", 123456789); // 123,456,789
string.Format("{0:#,###0}", 0); // 0
1 Comment
jamiebarrow
This won't necessarily use commas as the thousand separator depending on locale, I believe
If your current culture seting uses commas as thousands separator, you can just format it as a number with zero decimals:
String.Format("{0:N0}", 0)
Or:
0.ToString("N0")
Comments
from msdn
double value = 1234567890;
Console.WriteLine(value.ToString("#,#", CultureInfo.InvariantCulture));
Displays 1,234,567,890
1 Comment
AFract
Beware of this one : it will generate an empty string for value=0 which is certainly what OP wants. Instead, use "#,0" as pattern and it will be ok.
You can also play around a little with the CultureInfo object, if none of the other solutions work well for you:
var x = CultureInfo.CurrentCulture;
x.NumberFormat.NumberDecimalSeparator = ",";
x.NumberFormat.NumberDecimalDigits = 0;
x.NumberFormat.NumberGroupSizes = new int[] {3};
answered Mar 30, 2010 at 13:47
Jhonny D. Cano -Leftware-
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Comments
You can put a number after the N to specify number of decimal digits:
String.Format("{0:n0}", 0) // gives 0
Comments
I up-marked another answer and then found that zero values are an empty string.
System.Globalization.CultureInfo ci = new System.Globalization.CultureInfo("de-DE");
System.Threading.Thread.CurrentThread.CurrentCulture = ci;
double x = 23232323.21;
string y = x.ToString("#,0", System.Globalization.CultureInfo.CurrentCulture);
The string is returned in the current culture which is German therefore y = 23.232.323
y = 0 when x = 0.
Comments
you just put it like this:
Console.WriteLine(**$**"Your current amount of money is: **{yourVar:c}**");
Comments
relatively american number to ordinal.
using static System.Threading.Thread;
public static string NumberToOrdinal(int number, CultureInfo? culture = null)
{
var numberString = number.ToString(
format: "#,0",
provider: culture ?? CurrentThread.CurrentCulture);
// Examine the last 2 digits.
var lastDigits = number % 100;
// If the last digits are 11, 12, or 13, use th. Otherwise:
if (lastDigits is >= 11 and <= 13) return $"{numberString}th";
// Check the last digit.
return (lastDigits % 10) switch
{
1 => $"{numberString}st",
2 => $"{numberString}nd",
3 => $"{numberString}rd",
_ => $"{numberString}th",
};
}
ps i never comment on these things because stack overflow won't let me and sometimes its not worth upstaging everyone with a new answer for a slight improvement. Screw stackoverflow. I've been here for years and still can't comment- which is why i still don't post.
