DateTime.ToString DateTime.ToString DateTime.ToString DateTime.ToString Method

Definição

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente.Converts the value of the current DateTime object to its equivalent string representation.

Sobrecargas

ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider)

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente usando o formato especificado e as informações de formato específicas da cultura.Converts the value of the current DateTime object to its equivalent string representation using the specified format and culture-specific format information.

ToString(String) ToString(String) ToString(String) ToString(String)

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente usando o formato especificado e as convenções de formatação da cultura atual.Converts the value of the current DateTime object to its equivalent string representation using the specified format and the formatting conventions of the current culture.

ToString(IFormatProvider) ToString(IFormatProvider) ToString(IFormatProvider) ToString(IFormatProvider)

Converte o valor do objeto DateTime atual para sua representação de cadeia de caracteres equivalente usando as informações de formato específicas da cultura especificada.Converts the value of the current DateTime object to its equivalent string representation using the specified culture-specific format information.

ToString() ToString() ToString() ToString()

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente usando as convenções de formatação da cultura atual.Converts the value of the current DateTime object to its equivalent string representation using the formatting conventions of the current culture.

ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider)

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente usando o formato especificado e as informações de formato específicas da cultura.Converts the value of the current DateTime object 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);
override this.ToString : string * IFormatProvider -> string
Public Function ToString (format As String, provider As IFormatProvider) As String

Parâmetros

format
String String String String

Uma cadeia de caracteres de formato de data e hora padrão ou personalizada.A standard or custom date and time format string.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Um objeto que fornece informações de formatação específicas de cultura.An object that supplies culture-specific formatting information.

Retornos

Uma representação de cadeia de caracteres do valor do atual objeto DateTime, conforme especificado por format e provider.A string representation of value of the current DateTime object as specified by format and provider.

Implementações

Exceções

O tamanho de format é 1, e ele não é um dos caracteres especificadores de formato definidos para DateTimeFormatInfo.The length of format is 1, and it is not one of the format specifier characters defined for DateTimeFormatInfo.

- ou --or- format não contém um padrão de formato personalizado válido.format does not contain a valid custom format pattern.

A data e hora estão fora do intervalo de datas com suporte no calendário usado por provider.The date and time is outside the range of dates supported by the calendar used by provider.

Exemplos

O exemplo a seguir usa cada uma das cadeias de formato de data e hora padrão para exibir a representação de cadeia de caracteres de uma data e hora para quatro culturas diferentes.The following example uses each of the standard date time format strings to display the string representation of a date and time for four different cultures.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Create an array of all supported standard date and time format specifiers.
      string[] formats = {"d", "D", "f", "F", "g", "G", "m", "o", "r", 
                          "s", "t", "T", "u", "U", "Y"};
      // Create an array of four cultures.                                 
      CultureInfo[] cultures = {CultureInfo.CreateSpecificCulture("de-DE"), 
                                CultureInfo.CreateSpecificCulture("en-US"), 
                                CultureInfo.CreateSpecificCulture("es-ES"), 
                                CultureInfo.CreateSpecificCulture("fr-FR")};
       // Define date to be displayed.
      DateTime dateToDisplay = new DateTime(2008, 10, 1, 17, 4, 32);

      // Iterate each standard format specifier.
      foreach (string formatSpecifier in formats)
      {
         foreach (CultureInfo culture in cultures)
            Console.WriteLine("{0} Format Specifier {1, 10} Culture {2, 40}", 
                              formatSpecifier, culture.Name, 
                              dateToDisplay.ToString(formatSpecifier, culture));
         Console.WriteLine();
      }   
   }
}
// The example displays the following output:
//    d Format Specifier      de-DE Culture                               01.10.2008
//    d Format Specifier      en-US Culture                                10/1/2008
//    d Format Specifier      es-ES Culture                               01/10/2008
//    d Format Specifier      fr-FR Culture                               01/10/2008
//    
//    D Format Specifier      de-DE Culture                Mittwoch, 1. Oktober 2008
//    D Format Specifier      en-US Culture              Wednesday, October 01, 2008
//    D Format Specifier      es-ES Culture         miércoles, 01 de octubre de 2008
//    D Format Specifier      fr-FR Culture                  mercredi 1 octobre 2008
//    
//    f Format Specifier      de-DE Culture          Mittwoch, 1. Oktober 2008 17:04
//    f Format Specifier      en-US Culture      Wednesday, October 01, 2008 5:04 PM
//    f Format Specifier      es-ES Culture   miércoles, 01 de octubre de 2008 17:04
//    f Format Specifier      fr-FR Culture            mercredi 1 octobre 2008 17:04
//    
//    F Format Specifier      de-DE Culture       Mittwoch, 1. Oktober 2008 17:04:32
//    F Format Specifier      en-US Culture   Wednesday, October 01, 2008 5:04:32 PM
//    F Format Specifier      es-ES Culture miércoles, 01 de octubre de 2008 17:04:3
//    F Format Specifier      fr-FR Culture         mercredi 1 octobre 2008 17:04:32
//    
//    g Format Specifier      de-DE Culture                         01.10.2008 17:04
//    g Format Specifier      en-US Culture                        10/1/2008 5:04 PM
//    g Format Specifier      es-ES Culture                         01/10/2008 17:04
//    g Format Specifier      fr-FR Culture                         01/10/2008 17:04
//    
//    G Format Specifier      de-DE Culture                      01.10.2008 17:04:32
//    G Format Specifier      en-US Culture                     10/1/2008 5:04:32 PM
//    G Format Specifier      es-ES Culture                      01/10/2008 17:04:32
//    G Format Specifier      fr-FR Culture                      01/10/2008 17:04:32
//    
//    m Format Specifier      de-DE Culture                               01 Oktober
//    m Format Specifier      en-US Culture                               October 01
//    m Format Specifier      es-ES Culture                               01 octubre
//    m Format Specifier      fr-FR Culture                                1 octobre
//    
//    o Format Specifier      de-DE Culture              2008-10-01T17:04:32.0000000
//    o Format Specifier      en-US Culture              2008-10-01T17:04:32.0000000
//    o Format Specifier      es-ES Culture              2008-10-01T17:04:32.0000000
//    o Format Specifier      fr-FR Culture              2008-10-01T17:04:32.0000000
//    
//    r Format Specifier      de-DE Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    r Format Specifier      en-US Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    r Format Specifier      es-ES Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    r Format Specifier      fr-FR Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    
//    s Format Specifier      de-DE Culture                      2008-10-01T17:04:32
//    s Format Specifier      en-US Culture                      2008-10-01T17:04:32
//    s Format Specifier      es-ES Culture                      2008-10-01T17:04:32
//    s Format Specifier      fr-FR Culture                      2008-10-01T17:04:32
//    
//    t Format Specifier      de-DE Culture                                    17:04
//    t Format Specifier      en-US Culture                                  5:04 PM
//    t Format Specifier      es-ES Culture                                    17:04
//    t Format Specifier      fr-FR Culture                                    17:04
//    
//    T Format Specifier      de-DE Culture                                 17:04:32
//    T Format Specifier      en-US Culture                               5:04:32 PM
//    T Format Specifier      es-ES Culture                                 17:04:32
//    T Format Specifier      fr-FR Culture                                 17:04:32
//    
//    u Format Specifier      de-DE Culture                     2008-10-01 17:04:32Z
//    u Format Specifier      en-US Culture                     2008-10-01 17:04:32Z
//    u Format Specifier      es-ES Culture                     2008-10-01 17:04:32Z
//    u Format Specifier      fr-FR Culture                     2008-10-01 17:04:32Z
//    
//    U Format Specifier      de-DE Culture     Donnerstag, 2. Oktober 2008 00:04:32
//    U Format Specifier      en-US Culture   Thursday, October 02, 2008 12:04:32 AM
//    U Format Specifier      es-ES Culture    jueves, 02 de octubre de 2008 0:04:32
//    U Format Specifier      fr-FR Culture            jeudi 2 octobre 2008 00:04:32
//    
//    Y Format Specifier      de-DE Culture                             Oktober 2008
//    Y Format Specifier      en-US Culture                            October, 2008
//    Y Format Specifier      es-ES Culture                          octubre de 2008
//    Y Format Specifier      fr-FR Culture                             octobre 2008
Imports System.Globalization

Module Example
   Public Sub Main()
      ' Create an array of all supported standard date and time format specifiers.
      Dim formats() As String = {"d", "D", "f", "F", "g", "G", "m", "o", "r", _
                                 "s", "t", "T", "u", "U", "Y"}
      ' Create an array of four cultures.                                 
      Dim cultures() As CultureInfo = {CultureInfo.CreateSpecificCulture("de-DE"), _
                                       CultureInfo.CreateSpecificCulture("en-US"), _
                                       CultureInfo.CreateSpecificCulture("es-ES"), _
                                       CultureInfo.CreateSpecificCulture("fr-FR")}
       ' Define date to be displayed.
      Dim dateToDisplay As Date = #10/1/2008 17:04:32#

      ' Iterate each standard format specifier.
      For Each formatSpecifier As String In formats
         For Each culture As CultureInfo In cultures
            Console.WriteLine("{0} Format Specifier {1, 10} Culture {2, 40}", _
                              formatSpecifier, culture.Name, _
                              dateToDisplay.ToString(formatSpecifier, culture))
         Next
         Console.WriteLine()
      Next                                       
   End Sub
End Module
' The example displays the following output:
'    d Format Specifier      de-DE Culture                               01.10.2008
'    d Format Specifier      en-US Culture                                10/1/2008
'    d Format Specifier      es-ES Culture                               01/10/2008
'    d Format Specifier      fr-FR Culture                               01/10/2008
'    
'    D Format Specifier      de-DE Culture                Mittwoch, 1. Oktober 2008
'    D Format Specifier      en-US Culture              Wednesday, October 01, 2008
'    D Format Specifier      es-ES Culture         miércoles, 01 de octubre de 2008
'    D Format Specifier      fr-FR Culture                  mercredi 1 octobre 2008
'    
'    f Format Specifier      de-DE Culture          Mittwoch, 1. Oktober 2008 17:04
'    f Format Specifier      en-US Culture      Wednesday, October 01, 2008 5:04 PM
'    f Format Specifier      es-ES Culture   miércoles, 01 de octubre de 2008 17:04
'    f Format Specifier      fr-FR Culture            mercredi 1 octobre 2008 17:04
'    
'    F Format Specifier      de-DE Culture       Mittwoch, 1. Oktober 2008 17:04:32
'    F Format Specifier      en-US Culture   Wednesday, October 01, 2008 5:04:32 PM
'    F Format Specifier      es-ES Culture miércoles, 01 de octubre de 2008 17:04:3
'    F Format Specifier      fr-FR Culture         mercredi 1 octobre 2008 17:04:32
'    
'    g Format Specifier      de-DE Culture                         01.10.2008 17:04
'    g Format Specifier      en-US Culture                        10/1/2008 5:04 PM
'    g Format Specifier      es-ES Culture                         01/10/2008 17:04
'    g Format Specifier      fr-FR Culture                         01/10/2008 17:04
'    
'    G Format Specifier      de-DE Culture                      01.10.2008 17:04:32
'    G Format Specifier      en-US Culture                     10/1/2008 5:04:32 PM
'    G Format Specifier      es-ES Culture                      01/10/2008 17:04:32
'    G Format Specifier      fr-FR Culture                      01/10/2008 17:04:32
'    
'    m Format Specifier      de-DE Culture                               01 Oktober
'    m Format Specifier      en-US Culture                               October 01
'    m Format Specifier      es-ES Culture                               01 octubre
'    m Format Specifier      fr-FR Culture                                1 octobre
'    
'    o Format Specifier      de-DE Culture              2008-10-01T17:04:32.0000000
'    o Format Specifier      en-US Culture              2008-10-01T17:04:32.0000000
'    o Format Specifier      es-ES Culture              2008-10-01T17:04:32.0000000
'    o Format Specifier      fr-FR Culture              2008-10-01T17:04:32.0000000
'    
'    r Format Specifier      de-DE Culture            Wed, 01 Oct 2008 17:04:32 GMT
'    r Format Specifier      en-US Culture            Wed, 01 Oct 2008 17:04:32 GMT
'    r Format Specifier      es-ES Culture            Wed, 01 Oct 2008 17:04:32 GMT
'    r Format Specifier      fr-FR Culture            Wed, 01 Oct 2008 17:04:32 GMT
'    
'    s Format Specifier      de-DE Culture                      2008-10-01T17:04:32
'    s Format Specifier      en-US Culture                      2008-10-01T17:04:32
'    s Format Specifier      es-ES Culture                      2008-10-01T17:04:32
'    s Format Specifier      fr-FR Culture                      2008-10-01T17:04:32
'    
'    t Format Specifier      de-DE Culture                                    17:04
'    t Format Specifier      en-US Culture                                  5:04 PM
'    t Format Specifier      es-ES Culture                                    17:04
'    t Format Specifier      fr-FR Culture                                    17:04
'    
'    T Format Specifier      de-DE Culture                                 17:04:32
'    T Format Specifier      en-US Culture                               5:04:32 PM
'    T Format Specifier      es-ES Culture                                 17:04:32
'    T Format Specifier      fr-FR Culture                                 17:04:32
'    
'    u Format Specifier      de-DE Culture                     2008-10-01 17:04:32Z
'    u Format Specifier      en-US Culture                     2008-10-01 17:04:32Z
'    u Format Specifier      es-ES Culture                     2008-10-01 17:04:32Z
'    u Format Specifier      fr-FR Culture                     2008-10-01 17:04:32Z
'    
'    U Format Specifier      de-DE Culture     Donnerstag, 2. Oktober 2008 00:04:32
'    U Format Specifier      en-US Culture   Thursday, October 02, 2008 12:04:32 AM
'    U Format Specifier      es-ES Culture    jueves, 02 de octubre de 2008 0:04:32
'    U Format Specifier      fr-FR Culture            jeudi 2 octobre 2008 00:04:32
'    
'    Y Format Specifier      de-DE Culture                             Oktober 2008
'    Y Format Specifier      en-US Culture                            October, 2008
'    Y Format Specifier      es-ES Culture                          octubre de 2008
'    Y Format Specifier      fr-FR Culture                             octobre 2008

O exemplo a seguir demonstra diferentes maneiras de Formatar DateTime um valor usando a DateTimeFormatInfoinvariável.The following example demonstrates different ways of formatting a DateTime value using the invariant DateTimeFormatInfo.

using namespace System;
using namespace System::Globalization;
void main()
{
   DateTime dt = DateTime::Now;
   array<String^>^format = {L"d",L"D",L"f",L"F",L"g",L"G",L"m",L"r",L"s",L"t",L"T",L"u",L"U",L"y",L"dddd, MMMM dd yyyy",L"ddd, MMM d \"'\"yy",L"dddd, MMMM dd",L"M/yy",L"dd-MM-yy"};
   String^ date;
   for ( int i = 0; i < format->Length; i++ )
   {
      date = dt.ToString( format[ i ], DateTimeFormatInfo::InvariantInfo );
      Console::WriteLine( String::Concat( format[ i ], L" :", date ) );

   }
   
   /** Output.
       *
       * d :08/17/2000
       * D :Thursday, August 17, 2000
       * f :Thursday, August 17, 2000 16:32
       * F :Thursday, August 17, 2000 16:32:32
       * g :08/17/2000 16:32
       * G :08/17/2000 16:32:32
       * m :August 17
       * r :Thu, 17 Aug 2000 23:32:32 GMT
       * s :2000-08-17T16:32:32
       * t :16:32
       * T :16:32:32
       * u :2000-08-17 23:32:32Z
       * U :Thursday, August 17, 2000 23:32:32
       * y :August, 2000
       * dddd, MMMM dd yyyy :Thursday, August 17 2000
       * ddd, MMM d "'"yy :Thu, Aug 17 '00
       * dddd, MMMM dd :Thursday, August 17
       * M/yy :8/00
       * dd-MM-yy :17-08-00
       */
}

 using System;
 using System.Globalization; 
 
public class MainClass { 
    public static void Main(string[] args)  {
        DateTime dt = DateTime.Now;
        String[] format = {
            "d", "D",
            "f", "F",
            "g", "G",
            "m",
            "r",
            "s",
            "t", "T",
            "u", "U",
            "y",
            "dddd, MMMM dd yyyy",
            "ddd, MMM d \"'\"yy",
            "dddd, MMMM dd",
            "M/yy",
            "dd-MM-yy",
        };
        String date;
        for (int i = 0; i < format.Length; i++) {
            date = dt.ToString(format[i], DateTimeFormatInfo.InvariantInfo);
            Console.WriteLine(String.Concat(format[i], " :" , date));
        }
  
   /** Output.
    *
    * d :08/17/2000
    * D :Thursday, August 17, 2000
    * f :Thursday, August 17, 2000 16:32
    * F :Thursday, August 17, 2000 16:32:32
    * g :08/17/2000 16:32
    * G :08/17/2000 16:32:32
    * m :August 17
    * r :Thu, 17 Aug 2000 23:32:32 GMT
    * s :2000-08-17T16:32:32
    * t :16:32
    * T :16:32:32
    * u :2000-08-17 23:32:32Z
    * U :Thursday, August 17, 2000 23:32:32
    * y :August, 2000
    * dddd, MMMM dd yyyy :Thursday, August 17 2000
    * ddd, MMM d "'"yy :Thu, Aug 17 '00
    * dddd, MMMM dd :Thursday, August 17
    * M/yy :8/00
    * dd-MM-yy :17-08-00
    */
    }
}
Option Explicit
Option Strict

Imports System
Imports System.Globalization

Public Class MainClass
    
    Public Shared Sub Main()
        Dim dt As DateTime = DateTime.Now
        Dim myformat() As String =  {"d", "D", _
                                    "f", "F", _
                                    "g", "G", _
                                    "m", _
                                    "r", _
                                    "s", _
                                    "t", "T", _
                                    "u", "U", _
                                    "y", _
                                    "dddd, MMMM dd yyyy", _
                                    "ddd, MMM d ""'""yy", _
                                    "dddd, MMMM dd", _
                                    "M/yy", _
                                    "dd-MM-yy"}
        Dim mydate As String
        Dim i As Integer
        For i = 0 To myformat.Length - 1
            mydate = dt.ToString(myformat(i), DateTimeFormatInfo.InvariantInfo)
            Console.WriteLine(String.Concat(myformat(i), " :", mydate))
        Next i

    ' Output.
    '
    ' d :08/17/2000
    ' D :Thursday, August 17, 2000
    ' f :Thursday, August 17, 2000 16:32
    ' F :Thursday, August 17, 2000 16:32:32
    ' g :08/17/2000 16:32
    ' G :08/17/2000 16:32:32
    ' m :August 17
    ' r :Thu, 17 Aug 2000 23:32:32 GMT
    ' s :2000-08-17T16:32:32
    ' t :16:32
    ' T :16:32:32
    ' u :2000-08-17 23:32:32Z
    ' U :Thursday, August 17, 2000 23:32:32
    ' y :August, 2000
    ' dddd, MMMM dd yyyy :Thursday, August 17 2000
    ' ddd, MMM d "'"yy :Thu, Aug 17 '00
    ' dddd, MMMM dd :Thursday, August 17
    ' M/yy :8/00
    ' dd-MM-yy :17-08-00
    End Sub 'Main 
End Class 'MainClass

Comentários

O format parâmetro pode conter um único caractere especificador de formato (consulte cadeias de caracteres de formato de data e hora padrão) ou um padrão de formato personalizado (consulte cadeias de caracteres de formato personalizado de data e hora).The format parameter can contain either a single format specifier character (see Standard Date and Time Format Strings) or a custom format pattern (see Custom Date and Time Format Strings). Se format fornull ou uma cadeia de caracteres vazia (""), o especificador de formato padrão, "G", será usado.If format is null or an empty string (""), the standard format specifier, "G", is used.

O provider parâmetro define o padrão que corresponde aos especificadores de formato padrão, bem como os símbolos e nomes de componentes de data e hora.The provider parameter defines the pattern that corresponds to the standard format specifiers, as well as the symbols and names of date and time components. O parâmetro provider pode ser um dos seguintes:The provider parameter can be any of the following:

Se provider for null, oDateTimeFormatInfo associado à cultura atual será usado.If provider is null, the DateTimeFormatInfo associated with the current culture is used. Para obter mais informações, consulte CultureInfo.CurrentCulture.For more information, see CultureInfo.CurrentCulture.

Notas aos Chamadores

O ToString(String, IFormatProvider) método retorna a representação da cadeia de caracteres da data e hora no calendário usado provider pelo parâmetro.The ToString(String, IFormatProvider) method returns the string representation of the date and time in the calendar used by the provider parameter. O calendário é definido pela propriedade Calendar.Its calendar is defined by the Calendar property. Caso o valor da instância DateTime atual seja anterior a MinSupportedDateTime ou posterior a MaxSupportedDateTime, o método lança um ArgumentOutOfRangeException.If the value of the current DateTime instance is earlier than MinSupportedDateTime or later than MaxSupportedDateTime, the method throws an ArgumentOutOfRangeException. O exemplo a seguir fornece uma ilustração.The following example provides an illustration. Ele tenta formatar uma data que está fora do intervalo da UmAlQuraCalendar classe.It attempts to format a date that is outside the range of the UmAlQuraCalendar class.

[!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#4] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#4][!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#4] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#4]

Veja também

ToString(String) ToString(String) ToString(String) ToString(String)

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente usando o formato especificado e as convenções de formatação da cultura atual.Converts the value of the current DateTime object to its equivalent string representation using the specified format and the formatting conventions of the current culture.

public:
 System::String ^ ToString(System::String ^ format);
public string ToString (string format);
override this.ToString : string -> string
Public Function ToString (format As String) As String

Parâmetros

format
String String String String

Uma cadeia de caracteres de formato de data e hora padrão ou personalizada.A standard or custom date and time format string.

Retornos

Uma representação de cadeia de caracteres do valor do objeto DateTime atual, conforme especificado por format.A string representation of value of the current DateTime object as specified by format.

Exceções

O tamanho de format é 1, e ele não é um dos caracteres especificadores de formato definidos para DateTimeFormatInfo.The length of format is 1, and it is not one of the format specifier characters defined for DateTimeFormatInfo.

- ou --or- format não contém um padrão de formato personalizado válido.format does not contain a valid custom format pattern.

A data e hora está fora do intervalo de datas suportadas pelo calendário usado pela cultura atual.The date and time is outside the range of dates supported by the calendar used by the current culture.

Exemplos

O exemplo a seguir usa cada uma das cadeias de caracteres de formato de data e hora padrão e uma seleção de cadeias de caracteres de formato de DateTime data e hora personalizadas para exibir a representação de cadeia de um valor.The following example uses each of the standard date and time format strings and a selection of custom date and time format strings to display the string representation of a DateTime value. A cultura do thread atual para o exemplo é en-US.The thread current culture for the example is en-US.

using System;

public class DateToStringExample
{
   public static void Main()
   {
      DateTime dateValue = new DateTime(2008, 6, 15, 21, 15, 07);
      // Create an array of standard format strings.
      string[] standardFmts = {"d", "D", "f", "F", "g", "G", "m", "o", 
                               "R", "s", "t", "T", "u", "U", "y"};
      // Output date and time using each standard format string.
      foreach (string standardFmt in standardFmts)
         Console.WriteLine("{0}: {1}", standardFmt, 
                           dateValue.ToString(standardFmt));
      Console.WriteLine();
      
      // Create an array of some custom format strings.
      string[] customFmts = {"h:mm:ss.ff t", "d MMM yyyy", "HH:mm:ss.f", 
                             "dd MMM HH:mm:ss", @"\Mon\t\h\: M", "HH:mm:ss.ffffzzz" };
      // Output date and time using each custom format string.
      foreach (string customFmt in customFmts)
         Console.WriteLine("'{0}': {1}", customFmt,
                           dateValue.ToString(customFmt));
   }
}
// This example displays the following output to the console:
//       d: 6/15/2008
//       D: Sunday, June 15, 2008
//       f: Sunday, June 15, 2008 9:15 PM
//       F: Sunday, June 15, 2008 9:15:07 PM
//       g: 6/15/2008 9:15 PM
//       G: 6/15/2008 9:15:07 PM
//       m: June 15
//       o: 2008-06-15T21:15:07.0000000
//       R: Sun, 15 Jun 2008 21:15:07 GMT
//       s: 2008-06-15T21:15:07
//       t: 9:15 PM
//       T: 9:15:07 PM
//       u: 2008-06-15 21:15:07Z
//       U: Monday, June 16, 2008 4:15:07 AM
//       y: June, 2008
//       
//       'h:mm:ss.ff t': 9:15:07.00 P
//       'd MMM yyyy': 15 Jun 2008
//       'HH:mm:ss.f': 21:15:07.0
//       'dd MMM HH:mm:ss': 15 Jun 21:15:07
//       '\Mon\t\h\: M': Month: 6
//       'HH:mm:ss.ffffzzz': 21:15:07.0000-07:00
Module DateToStringExample
   Public Sub Main()
      Dim dateValue As Date = #6/15/2008 9:15:07PM#
      ' Create an array of standard format strings.
      Dim standardFmts() As String = {"d", "D", "f", "F", "g", "G", _
                                      "m", "o", "R", "s", "t", "T", _
                                      "u", "U", "y"}
      ' Output date and time using each standard format string.
      For Each standardFmt As String In standardFmts
         Console.WriteLine("{0}: {1}", standardFmt, _
                           dateValue.ToString(standardFmt))
      Next
      Console.WriteLine()
      
      ' Create an array of some custom format strings.
      Dim customFmts() As String = {"h:mm:ss.ff t", "d MMM yyyy", "HH:mm:ss.f", _
                                    "dd MMM HH:mm:ss", "\Mon\t\h\: M", "HH:mm:ss.ffffzzz" }
      ' Output date and time using each custom format string.
      For Each customFmt As String In customFmts
         Console.WriteLine("'{0}': {1}", customFmt, _
                           dateValue.ToString(customFmt))
      Next
   End Sub
End Module
' This example displays the following output to the console:
'       d: 6/15/2008
'       D: Sunday, June 15, 2008
'       f: Sunday, June 15, 2008 9:15 PM
'       F: Sunday, June 15, 2008 9:15:07 PM
'       g: 6/15/2008 9:15 PM
'       G: 6/15/2008 9:15:07 PM
'       m: June 15
'       o: 2008-06-15T21:15:07.0000000
'       R: Sun, 15 Jun 2008 21:15:07 GMT
'       s: 2008-06-15T21:15:07
'       t: 9:15 PM
'       T: 9:15:07 PM
'       u: 2008-06-15 21:15:07Z
'       U: Monday, June 16, 2008 4:15:07 AM
'       y: June, 2008
'       
'       'h:mm:ss.ff t': 9:15:07.00 P
'       'd MMM yyyy': 15 Jun 2008
'       'HH:mm:ss.f': 21:15:07.0
'       'dd MMM HH:mm:ss': 15 Jun 21:15:07
'       '\Mon\t\h\: M': Month: 6
'       'HH:mm:ss.ffffzzz': 21:15:07.0000-07:00

Comentários

O ToString(String) método retorna a representação de cadeia de caracteres de um valor de data e hora em um formato específico que usa as convenções de formatação da cultura atual; para CultureInfo.CurrentCultureobter mais informações, consulte.The ToString(String) method returns the string representation of a date and time value in a specific format that uses the formatting conventions of the current culture; for more information, see CultureInfo.CurrentCulture.

O format parâmetro deve conter um único caractere especificador de formato (consulte cadeias de caracteres de formato de data e hora padrão) ou um padrão de formato personalizado (consulte cadeias de caracteres de formato de data e hora personalizadas) que define o formato do retornado Strings.The format parameter should contain either a single format specifier character (see Standard Date and Time Format Strings) or a custom format pattern (see Custom Date and Time Format Strings) that defines the format of the returned string. Se format fornull ou uma cadeia de caracteres vazia, o especificador de formato geral, ' G ', será usado.If format is null or an empty string, the general format specifier, 'G', is used.

Alguns usos desse método incluem:Some uses of this method include:

  • Obtendo uma cadeia de caracteres que exibe a data e a hora no formato curto de data e hora da cultura atual.Getting a string that displays the date and time in the current culture's short date and time format. Para fazer isso, use o especificador de formato "G".To do this, you use the "G" format specifier.

  • Obtendo uma cadeia de caracteres que contém apenas o mês e o ano.Getting a string that contains only the month and year. Para fazer isso, use a cadeia de caracteres de formato "MM/aaaa".To do this, you use the "MM/yyyy" format string. A cadeia de caracteres de formato usa o separador de data da cultura atual.The format string uses the current culture's date separator.

  • Obter uma cadeia de caracteres que contém a data e a hora em um formato específico.Getting a string that contains the date and time in a specific format. Por exemplo, a cadeia de caracteres de formato "MM/DD/yyyyHH: mm" exibe a cadeia de caracteres de data e hora em um formato fixo, como "19//03//2013 18:06".For example, the "MM/dd/yyyyHH:mm" format string displays the date and time string in a fixed format such as "19//03//2013 18:06". A cadeia de caracteres de formato usa "/" como um separador de data fixo, independentemente das configurações específicas de cultura.The format string uses "/" as a fixed date separator regardless of culture-specific settings.

  • Obtendo uma data em um formato condensado que poderia ser usado para serializar uma cadeia de caracteres de data.Getting a date in a condensed format that could be used for serializing a date string. Por exemplo, a cadeia de caracteres de formato "aaaammdd" exibe um ano de quatro dígitos seguido por um mês de dois dígitos e um dia de dois dígitos sem separador de data.For example, the "yyyyMMdd" format string displays a four-digit year followed by a two-digit month and a two-digit day with no date separator.

O exemplo a seguir usa essas três cadeias de caracteres de formato para exibir um valor de data e hora usando as convenções das culturas en-US e fr-FR.The following example uses these three format strings to display a date and time value by using the conventions of the en-US and fr-FR cultures.

using System;
using System.Globalization;
using System.Threading;

public class Example
{
   public static void Main()
   {
      String[] formats = { "G", "MM/yyyy", @"MM\/dd\/yyyy HH:mm",
                           "yyyyMMdd" };
      String[] cultureNames = { "en-US", "fr-FR" };
      DateTime date = new DateTime(2015, 8, 18, 13, 31, 17);
      foreach (var cultureName in cultureNames) {
         var culture = new CultureInfo(cultureName);
         CultureInfo.CurrentCulture = culture;
         Console.WriteLine(culture.NativeName);
         foreach (var format in formats)
            Console.WriteLine("   {0}: {1}", format,
                              date.ToString(format));
         Console.WriteLine();
      }
   }
}
// The example displays the following output:
//       English (United States)
//          G: 8/18/2015 1:31:17 PM
//          MM/yyyy: 08/2015
//          MM\/dd\/yyyy HH:mm: 08/18/2015 13:31
//          yyyyMMdd: 20150818
//
//       français (France)
//          G: 18/08/2015 13:31:17
//          MM/yyyy: 08/2015
//          MM\/dd\/yyyy HH:mm: 08/18/2015 13:31
//          yyyyMMdd: 20150818
Imports System.Globalization
Imports System.Threading

Public Module Example
   Public Sub Main()
      Dim formats() As String = { "G", "MM/yyyy", "MM\/dd\/yyyy HH:mm",
                                  "yyyyMMdd" }
      Dim cultureNames() As String = { "en-US", "fr-FR" }
      Dim dat As New DateTime(2015, 8, 18, 13, 31, 17)
      For Each cultureName In cultureNames
         Dim culture As New CultureInfo(cultureName)
         CultureInfo.CurrentCulture = culture
         Console.WriteLine(culture.NativeName)
         For Each fmt In formats
            Console.WriteLine("   {0}: {1}", fmt,
                              dat.ToString(fmt))
         Next
         Console.WriteLine()
      Next
   End Sub
End Module
' The example displays the following output:
'       English (United States)
'          G: 8/18/2015 1:31:17 PM
'          MM/yyyy: 08/2015
'          MM\/dd\/yyyy HH:mm: 08/18/2015 13:31
'          yyyyMMdd: 20150818
'
'       français (France)
'          G: 18/08/2015 13:31:17
'          MM/yyyy: 08/2015
'          MM\/dd\/yyyy HH:mm: 08/18/2015 13:31
'          yyyyMMdd: 20150818

Notas aos Chamadores

O ToString(String) método retorna a representação da cadeia de caracteres da data e hora no calendário usado pela cultura atual.The ToString(String) method returns the string representation of the date and time in the calendar used by the current culture. Caso o valor da instância DateTime atual seja anterior a MinSupportedDateTime ou posterior a MaxSupportedDateTime, o método lança um ArgumentOutOfRangeException.If the value of the current DateTime instance is earlier than MinSupportedDateTime or later than MaxSupportedDateTime, the method throws an ArgumentOutOfRangeException. O exemplo a seguir fornece uma ilustração.The following example provides an illustration. Ele tenta formatar uma data que está fora do intervalo da HebrewCalendar classe quando a cultura atual é Hebraico (Israel).It attempts to format a date that is outside the range of the HebrewCalendar class when the current culture is Hebrew (Israel).

[!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#3] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#3][!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#3] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#3]

Veja também

ToString(IFormatProvider) ToString(IFormatProvider) ToString(IFormatProvider) ToString(IFormatProvider)

Converte o valor do objeto DateTime atual para sua representação de cadeia de caracteres equivalente usando as informações de formato específicas da cultura especificada.Converts the value of the current DateTime object to its equivalent string representation using the specified culture-specific format information.

public:
 virtual System::String ^ ToString(IFormatProvider ^ provider);
public string ToString (IFormatProvider provider);
override this.ToString : IFormatProvider -> string
Public Function ToString (provider As IFormatProvider) As String

Parâmetros

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Um objeto que fornece informações de formatação específicas de cultura.An object that supplies culture-specific formatting information.

Retornos

Uma representação de cadeia de caracteres do valor do objeto DateTime atual, conforme especificado por provider.A string representation of value of the current DateTime object as specified by provider.

Implementações

Exceções

A data e hora estão fora do intervalo de datas com suporte no calendário usado por provider.The date and time is outside the range of dates supported by the calendar used by provider.

Exemplos

O exemplo a seguir exibe a representação de cadeia de caracteres de uma CultureInfo data e hora usando objetos que representam cinco culturas diferentes.The following example displays the string representation of a date and time using CultureInfo objects that represent five different cultures.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CultureInfo[] cultures = new CultureInfo[] {CultureInfo.InvariantCulture, 
                                                  new CultureInfo("en-us"), 
                                                  new CultureInfo("fr-fr"), 
                                                  new CultureInfo("de-DE"), 
                                                  new CultureInfo("es-ES"),
                                                  new CultureInfo("ja-JP")};

      DateTime thisDate = new DateTime(2009, 5, 1, 9, 0, 0);                                            

      foreach (CultureInfo culture in cultures)
      {
         string cultureName; 
         if (string.IsNullOrEmpty(culture.Name))
            cultureName = culture.NativeName;
         else
            cultureName = culture.Name;
      
         Console.WriteLine("In {0}, {1}", 
                           cultureName, thisDate.ToString(culture));
      }                                            
      }
}
// The example produces the following output:
//    In Invariant Language (Invariant Country), 05/01/2009 09:00:00
//    In en-US, 5/1/2009 9:00:00 AM
//    In fr-FR, 01/05/2009 09:00:00
//    In de-DE, 01.05.2009 09:00:00
//    In es-ES, 01/05/2009 9:00:00
//    In ja-JP, 2009/05/01 9:00:00
Imports System.Globalization

Module Example
   Public Sub Main()
      Dim cultures() As CultureInfo = {CultureInfo.InvariantCulture, _
                                       New CultureInfo("en-us"), _
                                       New CultureInfo("fr-fr"), _
                                       New CultureInfo("de-DE"), _
                                       New CultureInfo("es-ES"), _
                                       New CultureInfo("ja-JP")}
      
      Dim thisDate As Date =#5/1/2009 9:00AM#                                            
      
      For Each culture As CultureInfo In cultures
         Dim cultureName As String 
         If String.IsNullOrEmpty(culture.Name) Then
            cultureName = culture.NativeName
         Else
            cultureName = culture.Name
         End If

         Console.WriteLine("In {0}, {1}", _
                           cultureName, thisDate.ToString(culture))
      Next                                            
   End Sub
End Module
' The example produces the following output:
'    In Invariant Language (Invariant Country), 05/01/2009 09:00:00
'    In en-US, 5/1/2009 9:00:00 AM
'    In fr-FR, 01/05/2009 09:00:00
'    In de-DE, 01.05.2009 09:00:00
'    In es-ES, 01/05/2009 9:00:00
'    In ja-JP, 2009/05/01 9:00:00

Comentários

O valor do objeto atual DateTime é formatado usando o especificador de formato de data e hora geral (' G '), que formata a saída usando o padrão de data abreviada e o padrão de hora longa.The value of the current DateTime object is formatted using the general date and time format specifier ('G'), which formats output using the short date pattern and the long time pattern.

O formato do padrão de data abreviada e de hora longa é definido provider pelo parâmetro.The format of the short date and long time pattern is defined by the provider parameter. O parâmetro provider pode ser um dos seguintes:The provider parameter can be any of the following:

Se provider for null, oDateTimeFormatInfo objeto associado à cultura atual será usado.If provider is null, the DateTimeFormatInfo object associated with the current culture is used. Para obter mais informações, consulte CultureInfo.CurrentCulture.For more information, see CultureInfo.CurrentCulture.

Notas aos Chamadores

O ToString(IFormatProvider) método retorna a representação de cadeia de caracteres da data e hora no calendário usado pela cultura representada provider pelo parâmetro.The ToString(IFormatProvider) method returns the string representation of the date and time in the calendar used by the culture represented by the provider parameter. O calendário é definido pela propriedade Calendar.Its calendar is defined by the Calendar property. Caso o valor da instância DateTime atual seja anterior a MinSupportedDateTime ou posterior a MaxSupportedDateTime, o método lança um ArgumentOutOfRangeException.If the value of the current DateTime instance is earlier than MinSupportedDateTime or later than MaxSupportedDateTime, the method throws an ArgumentOutOfRangeException. O exemplo a seguir fornece uma ilustração.The following example provides an illustration. Ele tenta formatar uma data que está fora do intervalo da JapaneseCalendar classe.It attempts to format a date that is outside the range of the JapaneseCalendar class.

[!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#1] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#1][!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#1] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#1]

Veja também

ToString() ToString() ToString() ToString()

Converte o valor do atual objeto DateTime na representação de cadeia de caracteres equivalente usando as convenções de formatação da cultura atual.Converts the value of the current DateTime object to its equivalent string representation using the formatting conventions of the current culture.

public:
 override System::String ^ ToString();
public override string ToString ();
override this.ToString : unit -> string
Public Overrides Function ToString () As String

Retornos

Uma representação de cadeia de caracteres do valor do atual objeto DateTime.A string representation of the value of the current DateTime object.

Exceções

A data e hora está fora do intervalo de datas suportadas pelo calendário usado pela cultura atual.The date and time is outside the range of dates supported by the calendar used by the current culture.

Exemplos

O exemplo a seguir ilustra como a representação de cadeia DateTime de caracteres de um ToString() valor retornado pelo método depende da cultura de thread atual.The following example illustrates how the string representation of a DateTime value returned by the ToString() method depends on the thread current culture. Ele altera a cultura do thread atual de en-US para fr-FR para ja-JP.It changes the current thread culture from en-US to fr-FR to ja-JP. e, em cada caso, ToString() chama o método para retornar a representação de cadeia de caracteres de um valor de data e hora usando essa cultura.and in each case calls the ToString() method to return the string representation of a date and time value using that culture.

using System;
using System.Globalization;
using System.Threading;

public class DateToStringExample
{
   public static void Main()
   {
      CultureInfo currentCulture = Thread.CurrentThread.CurrentCulture;
      DateTime exampleDate = new DateTime(2008, 5, 1, 18, 32, 6);
      
      // Display the date using the current (en-US) culture.
      Console.WriteLine(exampleDate.ToString());

      // Change the current culture to fr-FR and display the date.
      Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("fr-FR");
      Console.WriteLine(exampleDate.ToString());

      // Change the current culture to ja-JP and display the date.
      Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("ja-JP");
      Console.WriteLine(exampleDate.ToString());
      
      // Restore the original culture
      Thread.CurrentThread.CurrentCulture = currentCulture;
   }
}
// The example displays the following output to the console:
//       5/1/2008 6:32:06 PM
//       01/05/2008 18:32:06
//       2008/05/01 18:32:06
Imports System.Globalization
Imports System.Threading

Module DateToStringExample
   Public Sub Main()
      Dim currentCulture As CultureInfo = Thread.CurrentThread.CurrentCulture
      Dim exampleDate As Date = #05/01/2008 6:32:06PM#
      
      ' Display the date using the current (en-US) culture.
      Console.WriteLine(exampleDate.ToString())

      ' Change the current culture to fr-FR and display the date.
      Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("fr-FR")
      Console.WriteLine(exampleDate.ToString())

      ' Change the current culture to ja-JP and display the date.
      Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("ja-JP")
      Console.WriteLine(exampleDate.ToString())
      
      ' Restore the original culture
      Thread.CurrentThread.CurrentCulture = currentCulture
   End Sub
End Module
' The example displays the following output to the console:
'       5/1/2008 6:32:06 PM
'       01/05/2008 18:32:06
'       2008/05/01 18:32:06

Comentários

O valor do objeto atual DateTime é formatado usando o especificador de formato de data e hora geral (' G ').The value of the current DateTime object is formatted using the general date and time format specifier ('G'). Para formatá-lo usando um especificador de formato de data e ToString(String) hora específico, chame o método.To format it using a specific date and time format specifier, call the ToString(String) method. Para formatá-lo usando o especificador de formato de data e hora geral (' G ') para uma ToString(IFormatProvider) cultura específica, chame o método.To format it using the general date and time format specifier ('G') for a specific culture, call the ToString(IFormatProvider) method. Para formatá-lo usando um especificador de formato de data e hora específico e as convenções de uma ToString(String, IFormatProvider) cultura específica, chame o método.To format it using a specific date and time format specifier and the conventions of a specific culture, call the ToString(String, IFormatProvider) method.

Este método usa informações de formatação derivadas da cultura atual.This method uses formatting information derived from the current culture. Em particular, ele combina as cadeias de caracteres de formato ShortDatePattern personalizado LongTimePattern retornadas pelas DateTimeFormatInfo Propriedades e do objeto Thread.CurrentThread.CurrentCulture.DateTimeFormat retornado pela propriedade.In particular, it combines the custom format strings returned by the ShortDatePattern and LongTimePattern properties of the DateTimeFormatInfo object returned by the Thread.CurrentThread.CurrentCulture.DateTimeFormat property. Para obter mais informações, consulte CultureInfo.CurrentCulture.For more information, see CultureInfo.CurrentCulture. Outras sobrecargas do ToString método permitem especificar a cultura cuja formatação deve ser usada e definir o padrão DateTime de saída do valor.Other overloads of the ToString method enable you to specify the culture whose formatting to use and to define the output pattern of the DateTime value.

Notas aos Chamadores

O ToString() método retorna a representação da cadeia de caracteres da data e hora no calendário usado pela cultura atual.The ToString() method returns the string representation of the date and time in the calendar used by the current culture. Caso o valor da instância DateTime atual seja anterior a MinSupportedDateTime ou posterior a MaxSupportedDateTime, o método lança um ArgumentOutOfRangeException.If the value of the current DateTime instance is earlier than MinSupportedDateTime or later than MaxSupportedDateTime, the method throws an ArgumentOutOfRangeException. O exemplo a seguir fornece uma ilustração.The following example provides an illustration. Ele tenta formatar uma data que está fora do intervalo da HijriCalendar classe quando a cultura atual é árabe (Síria).It attempts to format a date that is outside the range of the HijriCalendar class when the current culture is Arabic (Syria).

[!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#2] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#2][!code-csharpSystem.DateTime.ToString.ArgumentOutOfRangeException#2] [!code-vbSystem.DateTime.ToString.ArgumentOutOfRangeException#2]

Veja também

Aplica-se a