Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information.
Syntax
Parameters
- format
- format
- provider
Returns
The string representation of the value of this instance as specified by format and provider.
Exceptions
Type Reason FormatException format is invalid.
Remarks
The long.ToString(string, IFormatProvider) method formats an long value in a specified format by using the System.Globalization.NumberFormatInfo object of a specified culture. If you want to use default format or culture settings, use the other overloads of the long.ToString(string) method, as follows:
| Default ("G") format |
Default (current) culture | |
| Default ("G") format |
A specific culture | |
| A specific format |
Default (current) culture |
The format parameter can be either a standard or a custom numeric format string. All standard numeric format strings other than "R" (or "r") are supported, as are all custom numeric format characters. If format is null or an empty string (""), the return value for this instance is formatted with the general numeric format specifier ("G").
The provider parameter is an object that implements the IFormatProvider interface. Its IFormatProvider.GetFormat(Type) method returns a System.Globalization.NumberFormatInfo object that provides culture-specific information about the format of the string that is returned by this method. The object that implements IFormatProvider can be any of the following:
A System.Globalization.CultureInfo object that represents the culture whose formatting rules are to be used.
A System.Globalization.NumberFormatInfo object that contains specific numeric formatting information for this value.
A custom object that implements IFormatProvider and whose IFormatProvider.GetFormat(Type) method returns a System.Globalization.NumberFormatInfo object that provides formatting information.
If provider is null or a System.Globalization.NumberFormatInfo object cannot be obtained from provider, the return value for this instance is formatted with the System.Globalization.NumberFormatInfo for the current culture.
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.
Requirements
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0