C# Numeric ("N") Format Specifier
Description
The numeric ("N") specifier formats a number to a string of
the form "-d,ddd,ddd.ddd...", where
- "-" indicates a negative,
- "d" indicates a digit (0-9),
- "," indicates a group separator, and
- "." indicates a decimal point symbol.
| Item | Value |
|---|---|
| Name | Number |
| Format specifier | "N" or "n" |
| Supported by | All numeric types. |
| Result | Integral and decimal digits, group separators, and a decimal separator with optional negative sign. |
| Precision specifier | indicates the desired number of digits after the decimal point. |
| Default precision specifier | Defined by System.Globalization.NumberFormatInfo. |
Example,
| Value | Format | Formated |
|---|---|---|
| 1234.567 | ("N", en-US) | 1,234.57 |
| 1234.567 | ("N", ru-RU) | 1 234,57 |
| 1234 | ("N1", en-US) | 1,234.0 |
| 1234 | ("N1", ru-RU) | 1 234,0 |
| -1234.56 | ("N3", en-US) | -1,234.560 |
| -1234.56 | ("N3", ru-RU) | -1 234,560 |
The result string is affected by the formatting NumberFormatInfo properties.
- NegativeSign
- NumberNegativePattern
- NumberGroupSizes
- NumberGroupSeparator
- NumberDecimalSeparator
- NumberDecimalDigits
Example
using System;/* w w w. ja va 2s. c om*/
using System.Globalization;
class MainClass
{
static void Main()
{
double dblValue = -12445.6789;
Console.WriteLine(dblValue.ToString("N", CultureInfo.InvariantCulture));
// Displays -12,445.68
Console.WriteLine(dblValue.ToString("N1",
CultureInfo.CreateSpecificCulture("sv-SE")));
// Displays -12 445,7
int intValue = 123456789;
Console.WriteLine(intValue.ToString("N1", CultureInfo.InvariantCulture));
// Displays 123,456,789.0
}
}
The code above generates the following result.
