Archive for category Programming

[C#] string format specifiers.

Format Specifier

Description

C or c

Formats the string as currency. Precedes the number with an appropriate currency symbol ($ in the US). Separates digits with an appropriate separator character (comma in the US) and sets the number of decimal places to two by default.

D or d

Formats the string as a decimal. Displays number as an integer.

N or n

Formats the string with commas and a default of two decimal places.

E or e

Formats the number using scientific notation with a default of six decimal places.

F or f

Formats the string with a fixed number of decimal places (two by default).

G or g

General. Formats the number normally with decimal places or using scientific notation, depending on context. If a format item does not contain a format specifier, format G is assumed implicitly.

X or x

Formats the string as hexadecimal.

Reference: Visual C#® 2005: How to Program, Second Edition

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[C#] decimal

Most programmers represent floating-point numbers with type double. In fact, C# treats all real numbers you type in an application’s source code (such as 7.33 and 0.0975) as double values by default. Such values in the source code are known as floating-point literals. To type a decimal literal, you must type the letter "M" or "m" at the end of a real number (for example, 7.33M is a decimal literal rather than a double). Integer literals are implicitly converted into type float, double or decimal when they are assigned to a variable of one of these types.

Reference: Visual C#® 2005: How to Program, Second Edition.

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