Appendix C: Using String Format Specifiers

This appendix shows you the string format specifiers you can use when developing enterprise applications using C#.

Formatting Numbers

A format specifier can quickly convert a numerical value into a properly formatted value string:

 int i = 15; Console.WriteLine( "{0:c} [" + string.Format( "{0:c}", i ) + "]" ); 

Table C-1 describes how to format numbers that take an integer value of 15.

Table C-1: Formatting Numbers Taking an Integer Value of 15

SPECIFIER	TYPE	FORMAT	OUTPUT
c	Currency	{0:c}	$15.00
d	Whole number	{0:d}	15
e	Scientific	{0:e}	1.500000e+001
e	Formatted scientific	{0:00e+0}	15e+0
f	Fixed point	{0:f}	15
g	General	{0:g}	15
n	Number with commas for thousands	{0:n}	15.00
x	Hexadecimal	{0:x4}	000f
#	Digit placeholder	{0:(#).##}	(15)
.	Decimal point	{0:0.0}	15.0
,	Thousand separator	{0:0,0}	15
,.	Number scaling	{0:0,.}
%	Percent	{0:0%}	1500%