Appendix B. Format Specifiers
Table B-1 lists the numeric format specifiers supported by the
Format method on the predefined numeric
types.
Table B-1. Numeric Format Specifiers|
C[n]
|
$XX,XX.XX
($XX,XXX.XX)
|
Currency
|
D[n]
|
[-]XXXXXXX
|
Decimal
|
E[n]
or
e[n]
|
[-]X.XXXXXXE+xxx
[-]X.XXXXXXe+xxx
[-]X.XXXXXXE-xxx
[-]X.XXXXXXe-xxx
|
Exponent
|
F[n]
|
[-]XXXXXXX.XX
|
Fixed point
|
G[n]
|
General or scientific
|
General
|
N[n]
|
[-]XX,XXX.XX
|
Number
|
X[n]
or
x[n]
|
Hex representation
|
Hex
|
This example uses numeric format specifiers without precision
specifiers:
using System;
class TestDefaultFormats {
static void Main( ) {
int i = 654321;
Console.WriteLine("{0:C}", i); // $654,321.00
Console.WriteLine("{0:D}", i); // 654321
Console.WriteLine("{0:E}", i); // 6.543210E+005
Console.WriteLine("{0:F}", i); // 654321.00
Console.WriteLine("{0:G}", i); // 654321
Console.WriteLine("{0:N}", i); // 654,321.00
Console.WriteLine("{0:X}", i); // 9FBF1
Console.WriteLine("{0:x}", i); // 9fbf1
}
}
This example uses numeric format specifiers with precision specifiers
on a variety of int values:
using System;
class TestIntegerFormats {
static void Main( ) {
int i = 123;
Console.WriteLine("{0:C6}", i); // $123.000000
Console.WriteLine("{0:D6}", i); // 000123
Console.WriteLine("{0:E6}", i); // 1.230000E+002
Console.WriteLine("{0:G6}", i); // 123
Console.WriteLine("{0:N6}", i); // 123.000000
Console.WriteLine("{0:X6}", i); // 00007B
i = -123;
Console.WriteLine("{0:C6}", i); // ($123.000000)
Console.WriteLine("{0:D6}", i); // -000123
Console.WriteLine("{0:E6}", i); // -1.230000E+002
Console.WriteLine("{0:G6}", i); // -123
Console.WriteLine("{0:N6}", i); // -123.000000
Console.WriteLine("{0:X6}", i); // FFFF85
i = 0;
Console.WriteLine("{0:C6}", i); // $0.000000
Console.WriteLine("{0:D6}", i); // 000000
Console.WriteLine("{0:E6}", i); // 0.000000E+000
Console.WriteLine("{0:G6}", i); // 0
Console.WriteLine("{0:N6}", i); // 0.000000
Console.WriteLine("{0:X6}", i); // 000000
}
}
This example uses numeric format specifiers with precision specifiers
on a variety of double values:
using System;
class TestDoubleFormats {
static void Main( ) {
double d = 1.23;
Console.WriteLine("{0:C6}", d); // $1.230000
Console.WriteLine("{0:E6}", d); // 1.230000E+000
Console.WriteLine("{0:G6}", d); // 1.23
Console.WriteLine("{0:N6}", d); // 1.230000
d = -1.23;
Console.WriteLine("{0:C6}", d); // ($1.230000)
Console.WriteLine("{0:E6}", d); // -1.230000E+000
Console.WriteLine("{0:G6}", d); // -1.23
Console.WriteLine("{0:N6}", d); // -1.230000
d = 0;
Console.WriteLine("{0:C6}", d); // $0.000000
Console.WriteLine("{0:E6}", d); // 0.000000E+000
Console.WriteLine("{0:G6}", d); // 0
Console.WriteLine("{0:N6}", d); // 0.000000
}
}
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