Single.ToString Method (String, IFormatProvider)
Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- format
-
Type:
System.String
A numeric format string.
- provider
-
Type:
System.IFormatProvider
An object that supplies culture-specific formatting information.
Return Value
Type: System.StringThe string representation of the value of this instance as specified by format and provider.
The ToString(String, IFormatProvider) method formats a Single value in a specified format of a specified culture. If you want to use default format or culture settings, use the other overloads of the ToString method, as follows:
To use format | For culture | Use the overload |
|---|---|---|
Default ("G") format | Default (current) culture | |
Default ("G") format | A specific culture | |
A specific format | Default (current) culture |
The return value can be PositiveInfinitySymbol, NegativeInfinitySymbol, NaNSymbol, or the string representation of the value of the current instance, as specified by format.
The format parameter can be any valid standard numeric format specifier except for D and X, as well as any combination of custom numeric format specifiers. If format is null or an empty string, the return value for this instance is formatted with the general numeric format specifier ("G").
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about formatting, see Formatting Types in the .NET Framework.
The provider parameter is an IFormatProvider implementation whose GetFormat method returns a NumberFormatInfo object. Typically, provider is a CultureInfo object or a NumberFormatInfo object. The provider parameter supplies culture-specific information used in formatting. If provider is null, the return value is formatted with the NumberFormatInfo object for the current culture.
By default, the return value only contains 7 digits of precision although a maximum of 9 digits is maintained internally. If the value of this instance has greater than 7 digits, ToString returns PositiveInfinitySymbol or NegativeInfinitySymbol instead of the expected number. If you require more precision, specify format with the "G9" format specification, which always returns 9 digits of precision, or "R", which returns 7 digits if the number can be represented with that precision or 9 digits if the number can only be represented with maximum precision.
The following example displays a Single value using each of the supported standard numeric format specifiers for several different cultures.
float value = 16325.62901F; string specifier; CultureInfo culture; // Use standard numeric format specifiers. specifier = "G"; culture = CultureInfo.CreateSpecificCulture("eu-ES"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 16325,62901 Console.WriteLine(value.ToString(specifier, CultureInfo.InvariantCulture)); // Displays: 16325.62901 specifier = "C"; culture = CultureInfo.CreateSpecificCulture("en-US"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: $16,325.63 culture = CultureInfo.CreateSpecificCulture("en-GB"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: �16,325.63 specifier = "E04"; culture = CultureInfo.CreateSpecificCulture("sv-SE"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 1,6326E+004 culture = CultureInfo.CreateSpecificCulture("en-NZ"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 1.6326E+004 specifier = "F"; culture = CultureInfo.CreateSpecificCulture("fr-FR"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 16325,63 culture = CultureInfo.CreateSpecificCulture("en-CA"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 16325.63 specifier = "N"; culture = CultureInfo.CreateSpecificCulture("es-ES"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 16.325,63 culture = CultureInfo.CreateSpecificCulture("fr-CA"); Console.WriteLine(value.ToString(specifier, culture)); // Displays: 16 325,63 specifier = "P"; culture = CultureInfo.InvariantCulture; Console.WriteLine((value/10000).ToString(specifier, culture)); // Displays: 163.26 % culture = CultureInfo.CreateSpecificCulture("ar-EG"); Console.WriteLine((value/10000).ToString(specifier, culture)); // Displays: 163.256 %
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1