Int32.ToString Method (System) |
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Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information. public: virtual System::String ^ ToString(System::String ^ format, IFormatProvider ^ provider); public string ToString (string format, IFormatProvider provider); public string ToString (string? format, IFormatProvider? provider); override this.ToString : string * IFormatProvider -> string Public Function ToString (format As String, provider As IFormatProvider) As String Parameters format StringA standard or custom numeric format string. provider IFormatProviderAn object that supplies culture-specific formatting information. Returns StringThe string representation of the value of this instance as specified by format and provider. Implements ToString(String, IFormatProvider) Exceptions FormatExceptionformat is invalid or not supported. ExamplesThe following example displays a positive and a negative value using each of the supported standard numeric format specifiers for three different cultures. using namespace System; using namespace System::Globalization; void main() { // Define cultures whose formatting conventions are to be used. array^ cultures = { CultureInfo::CreateSpecificCulture("en-US"), CultureInfo::CreateSpecificCulture("fr-FR"), CultureInfo::CreateSpecificCulture("es-ES") }; int positiveNumber = 1679; int negativeNumber = -3045; array^ specifiers = {"G", "C", "D8", "E2", "F", "N", "P", "X8"}; for each (String^ specifier in specifiers) { for each (CultureInfo^ culture in cultures) { // Display values with "G" format specifier. Console::WriteLine("{0} format using {1} culture: {2, 16} {3, 16}", specifier, culture->Name, positiveNumber.ToString(specifier, culture), negativeNumber.ToString(specifier, culture)); } Console::WriteLine(); } } // The example displays the following output: // G format using en-US culture: 1679 -3045 // G format using fr-FR culture: 1679 -3045 // G format using es-ES culture: 1679 -3045 // // C format using en-US culture: $1,679.00 ($3,045.00) // C format using fr-FR culture: 1 679,00 € -3 045,00 € // C format using es-ES culture: 1.679,00 € -3.045,00 € // // D8 format using en-US culture: 00001679 -00003045 // D8 format using fr-FR culture: 00001679 -00003045 // D8 format using es-ES culture: 00001679 -00003045 // // E2 format using en-US culture: 1.68E+003 -3.05E+003 // E2 format using fr-FR culture: 1,68E+003 -3,05E+003 // E2 format using es-ES culture: 1,68E+003 -3,05E+003 // // F format using en-US culture: 1679.00 -3045.00 // F format using fr-FR culture: 1679,00 -3045,00 // F format using es-ES culture: 1679,00 -3045,00 // // N format using en-US culture: 1,679.00 -3,045.00 // N format using fr-FR culture: 1 679,00 -3 045,00 // N format using es-ES culture: 1.679,00 -3.045,00 // // P format using en-US culture: 167,900.00 % -304,500.00 % // P format using fr-FR culture: 167 900,00 % -304 500,00 % // P format using es-ES culture: 167.900,00 % -304.500,00 % // // X8 format using en-US culture: 0000068F FFFFF41B // X8 format using fr-FR culture: 0000068F FFFFF41B // X8 format using es-ES culture: 0000068F FFFFF41B // Define cultures whose formatting conventions are to be used. CultureInfo[] cultures = {CultureInfo.CreateSpecificCulture("en-US"), CultureInfo.CreateSpecificCulture("fr-FR"), CultureInfo.CreateSpecificCulture("es-ES") }; int positiveNumber = 1679; int negativeNumber = -3045; string[] specifiers = {"G", "C", "D8", "E2", "F", "N", "P", "X8"}; foreach (string specifier in specifiers) { foreach (CultureInfo culture in cultures) { // Display values with "G" format specifier. Console.WriteLine("{0} format using {1} culture: {2, 16} {3, 16}", specifier, culture.Name, positiveNumber.ToString(specifier, culture), negativeNumber.ToString(specifier, culture)); } Console.WriteLine(); } // The example displays the following output: // G format using en-US culture: 1679 -3045 // G format using fr-FR culture: 1679 -3045 // G format using es-ES culture: 1679 -3045 // // C format using en-US culture: $1,679.00 ($3,045.00) // C format using fr-FR culture: 1 679,00 € -3 045,00 € // C format using es-ES culture: 1.679,00 € -3.045,00 € // // D8 format using en-US culture: 00001679 -00003045 // D8 format using fr-FR culture: 00001679 -00003045 // D8 format using es-ES culture: 00001679 -00003045 // // E2 format using en-US culture: 1.68E+003 -3.05E+003 // E2 format using fr-FR culture: 1,68E+003 -3,05E+003 // E2 format using es-ES culture: 1,68E+003 -3,05E+003 // // F format using en-US culture: 1679.00 -3045.00 // F format using fr-FR culture: 1679,00 -3045,00 // F format using es-ES culture: 1679,00 -3045,00 // // N format using en-US culture: 1,679.00 -3,045.00 // N format using fr-FR culture: 1 679,00 -3 045,00 // N format using es-ES culture: 1.679,00 -3.045,00 // // P format using en-US culture: 167,900.00 % -304,500.00 % // P format using fr-FR culture: 167 900,00 % -304 500,00 % // P format using es-ES culture: 167.900,00 % -304.500,00 % // // X8 format using en-US culture: 0000068F FFFFF41B // X8 format using fr-FR culture: 0000068F FFFFF41B // X8 format using es-ES culture: 0000068F FFFFF41B // Define cultures whose formatting conventions are to be used. let cultures = [ CultureInfo.CreateSpecificCulture "en-US" CultureInfo.CreateSpecificCulture "fr-FR" CultureInfo.CreateSpecificCulture "es-ES" ] let positiveNumber = 1679 let negativeNumber = -3045 let specifiers = [ "G"; "C"; "D8"; "E2"; "F"; "N"; "P"; "X8" ] for specifier in specifiers do for culture in cultures do // Display values format specifiers. printfn $"{specifier} format using {culture.Name} culture: {positiveNumber.ToString(specifier, culture), 16} {negativeNumber.ToString(specifier, culture), 16}" printfn "" // The example displays the following output: // G format using en-US culture: 1679 -3045 // G format using fr-FR culture: 1679 -3045 // G format using es-ES culture: 1679 -3045 // // C format using en-US culture: $1,679.00 ($3,045.00) // C format using fr-FR culture: 1 679,00 € -3 045,00 € // C format using es-ES culture: 1.679,00 € -3.045,00 € // // D8 format using en-US culture: 00001679 -00003045 // D8 format using fr-FR culture: 00001679 -00003045 // D8 format using es-ES culture: 00001679 -00003045 // // E2 format using en-US culture: 1.68E+003 -3.05E+003 // E2 format using fr-FR culture: 1,68E+003 -3,05E+003 // E2 format using es-ES culture: 1,68E+003 -3,05E+003 // // F format using en-US culture: 1679.00 -3045.00 // F format using fr-FR culture: 1679,00 -3045,00 // F format using es-ES culture: 1679,00 -3045,00 // // N format using en-US culture: 1,679.00 -3,045.00 // N format using fr-FR culture: 1 679,00 -3 045,00 // N format using es-ES culture: 1.679,00 -3.045,00 // // P format using en-US culture: 167,900.00 % -304,500.00 % // P format using fr-FR culture: 167 900,00 % -304 500,00 % // P format using es-ES culture: 167.900,00 % -304.500,00 % // // X8 format using en-US culture: 0000068F FFFFF41B // X8 format using fr-FR culture: 0000068F FFFFF41B // X8 format using es-ES culture: 0000068F FFFFF41B ' Define cultures whose formatting conventions are to be used. Dim cultures() As CultureInfo = {CultureInfo.CreateSpecificCulture("en-US"), _ CultureInfo.CreateSpecificCulture("fr-FR"), _ CultureInfo.CreateSpecificCulture("es-ES") } Dim positiveNumber As Integer = 1679 Dim negativeNumber As Integer = -3045 Dim specifiers() As String = {"G", "C", "D8", "E2", "F", "N", "P", "X8"} For Each specifier As String In specifiers For Each culture As CultureInfo In Cultures ' Display values with "G" format specifier. Console.WriteLine("{0} format using {1} culture: {2, 16} {3, 16}", _ specifier, culture.Name, _ positiveNumber.ToString(specifier, culture), _ negativeNumber.ToString(specifier, culture)) Next Console.WriteLine() Next ' The example displays the following output to the console: ' G format using en-US culture: 1679 -3045 ' G format using fr-FR culture: 1679 -3045 ' G format using es-ES culture: 1679 -3045 ' ' C format using en-US culture: $1,679.00 ($3,045.00) ' C format using fr-FR culture: 1 679,00 € -3 045,00 € ' C format using es-ES culture: 1.679,00 € -3.045,00 € ' ' D8 format using en-US culture: 00001679 -00003045 ' D8 format using fr-FR culture: 00001679 -00003045 ' D8 format using es-ES culture: 00001679 -00003045 ' ' E2 format using en-US culture: 1.68E+003 -3.05E+003 ' E2 format using fr-FR culture: 1,68E+003 -3,05E+003 ' E2 format using es-ES culture: 1,68E+003 -3,05E+003 ' ' F format using en-US culture: 1679.00 -3045.00 ' F format using fr-FR culture: 1679,00 -3045,00 ' F format using es-ES culture: 1679,00 -3045,00 ' ' N format using en-US culture: 1,679.00 -3,045.00 ' N format using fr-FR culture: 1 679,00 -3 045,00 ' N format using es-ES culture: 1.679,00 -3.045,00 ' ' P format using en-US culture: 167,900.00 % -304,500.00 % ' P format using fr-FR culture: 167 900,00 % -304 500,00 % ' P format using es-ES culture: 167.900,00 % -304.500,00 % ' ' X8 format using en-US culture: 0000068F FFFFF41B ' X8 format using fr-FR culture: 0000068F FFFFF41B ' X8 format using es-ES culture: 0000068F FFFFF41B RemarksThe ToString(String, IFormatProvider) method formats an Int32 value in a specified format by using the NumberFormatInfo object 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 ToString() Default ("G") format A specific culture ToString(IFormatProvider) A specific format Default (current) culture ToString(String)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 GetFormat method returns a NumberFormatInfo object that provides culture-specific format 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 CultureInfo object that represents the culture whose formatting rules are to be used. A NumberFormatInfo object that contains specific numeric formatting information for this value. A custom object that implements IFormatProvider and whose GetFormat method returns a NumberFormatInfo object that provides formatting information. If provider is null or a NumberFormatInfo object cannot be obtained from provider, the return value for this instance is formatted with the NumberFormatInfo for the current culture. .NET 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. See also Parse(String) Formatting Types in .NET Standard Numeric Format Strings Custom Numeric Format Strings How to: Pad a Number with Leading Zeros Sample: .NET Core WinForms Formatting Utility (C#) Sample: .NET Core WinForms Formatting Utility (Visual Basic) Applies to |
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