Stephens' C# Programming with Visual Studio® 2010 24-Hour Trainer

180



LESSON 14 Working With StringS

For the C, E, F, N, and P formats, the precision specifier indicates the number of digits after the

decimal point.

Custom Numeric Formats

If the standard numeric formatting characters don’t do what you want, you can use a custom

numeric format. Table 14-3 summarizes the custom numeric formatting characters.

TABLE 143

CHARACTER MEANING

0 Digit or zero. A digit is displayed here or a zero if there is no corresponding digit in

the value being formatted.

# Digit or nothing. A digit is displayed here or nothing if there is no corresponding

digit in the value being formatted.

. Decimal separator. The decimal separator goes here. Note that the actual separa-

tor character may not be a period depending on the computer’s regional settings,

although you still use the period in the format string.

, Thousands separator. The thousands separator goes here. The actual separator

character may not be a comma depending on the computer’s regional settings,

although you still use the comma in the format string.

% Percent. The number is multiplied by 100 and the percent sign is added at this point.

For example, %0 puts the percent sign before the number and 0% puts it after.

E+0 Scientific notation. The number of 0s indicates the number of digits in the exponent.

If + is included, the exponent always includes a + or – sign. If + is omitted, the expo-

nent only includes a sign ...