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Custom Numeric Format Strings Output Examples 

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The following table illustrates the output created by applying some custom numeric format strings to specific data types and values. The output was generated using the ToString method and the English-United States (en-US) culture.

The Format string column indicates the format string, the Data type column indicates the data type used, the Value column indicates the value of the number being formatted, and the Output column indicates the result of formatting.

Format string Data type Value Output

#####

Double

123

123

00000

Double

123

00123

(###) ### - ####

Double

1234567890

(123) 456 – 7890

#.##

Double

1.2

1.2

0.00

Double

1.2

1.20

00.00

Double

1.2

01.20

#,#

Double

1234567890

1,234,567,890

#,,

Double

1234567890

1235

#,,,

Double

1234567890

1

#,##0,,

Double

1234567890

1,235

#0.##%

Double

0.086

8.6%

0.###E+0

Double

86000

8.6E+4

0.###E+000

Double

86000

8.6E+004

0.###E-000

Double

86000

8.6E004

[##-##-##]

Double

123456

[12-34-56]

##;(##)

Double

1234

1234

##;(##)

Double

-1234

(1234)

See Also

Concepts

Custom Numeric Format Strings
Standard Numeric Format Strings