Table B-1 lists the numeric format specifiers supported by the Format method on the predefined numeric types.
Specifier |
String result |
Datatype |
---|---|---|
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 } }