TimeSpan.Parse 方法

参考

定义

命名空间:: System

程序集:: System.Runtime.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

重要

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将时间间隔的字符串表示形式转换为其等效 TimeSpan。

重载

Parse(String, IFormatProvider)	使用指定的区域性特定格式信息，将时间间隔的字符串表示形式转换为其等效 TimeSpan。
Parse(ReadOnlySpan<Char>, IFormatProvider)	使用指定的区域性特定格式信息将时间间隔的跨度表示形式转换为其等效 TimeSpan。
Parse(String)	将时间间隔的字符串表示形式转换为其等效 TimeSpan。

Parse(String, IFormatProvider)

Source:: TimeSpan.cs

Source:: TimeSpan.cs

Source:: TimeSpan.cs

使用指定的区域性特定格式信息，将时间间隔的字符串表示形式转换为其等效 TimeSpan。

public:
 static TimeSpan Parse(System::String ^ input, IFormatProvider ^ formatProvider);

public:
 static TimeSpan Parse(System::String ^ input, IFormatProvider ^ formatProvider) = IParsable<TimeSpan>::Parse;

public static TimeSpan Parse (string input, IFormatProvider formatProvider);

public static TimeSpan Parse (string input, IFormatProvider? formatProvider);

static member Parse : string * IFormatProvider -> TimeSpan

Public Shared Function Parse (input As String, formatProvider As IFormatProvider) As TimeSpan

参数

input: String

一个字符串，指定要转换的时间间隔。

formatProvider: IFormatProvider

提供区域性特定的格式设置信息的对象。

TimeSpan

对应于由 formatProvider指定的 input的时间间隔。

实现

Parse(String, IFormatProvider)

例外

ArgumentNullException

input null。

FormatException

input 格式无效。

OverflowException

input 表示小于 TimeSpan.MinValue 或大于 TimeSpan.MaxValue的数字。

-或-

input 中的至少一天、小时、分钟或秒组件超出其有效范围。

示例

以下示例定义 CultureInfo 对象的数组，并使用调用 Parse(String, IFormatProvider) 方法中的每个对象来分析字符串数组中的元素。该示例说明了特定区域性的约定如何影响格式设置操作。

using System;
using System.Globalization;
using System.Text.RegularExpressions;

public class Example
{
   public static void Main()
   {
      string[] values = { "6", "6:12", "6:12:14", "6:12:14:45", 
                          "6.12:14:45", "6:12:14:45.3448", 
                          "6:12:14:45,3448", "6:34:14:45" };
      CultureInfo[] cultures = { new CultureInfo("en-US"), 
                                 new CultureInfo("ru-RU"),
                                 CultureInfo.InvariantCulture };
      
      string header = String.Format("{0,-17}", "String");
      foreach (CultureInfo culture in cultures)
         header += culture.Equals(CultureInfo.InvariantCulture) ? 
                      String.Format("{0,20}", "Invariant") :
                      String.Format("{0,20}", culture.Name);
      Console.WriteLine(header);
      Console.WriteLine();
      
      foreach (string value in values)
      {
         Console.Write("{0,-17}", value);
         foreach (CultureInfo culture in cultures)
         {
            try {
               TimeSpan ts = TimeSpan.Parse(value, culture);
               Console.Write("{0,20}", ts.ToString("c"));
            }
            catch (FormatException) {
               Console.Write("{0,20}", "Bad Format");
            }   
            catch (OverflowException) {
               Console.Write("{0,20}", "Overflow");
            }      
         }
         Console.WriteLine();                                
      }
   }
}
// The example displays the following output:
//    String                          en-US               ru-RU           Invariant
//    
//    6                          6.00:00:00          6.00:00:00          6.00:00:00
//    6:12                         06:12:00            06:12:00            06:12:00
//    6:12:14                      06:12:14            06:12:14            06:12:14
//    6:12:14:45                 6.12:14:45          6.12:14:45          6.12:14:45
//    6.12:14:45                 6.12:14:45          6.12:14:45          6.12:14:45
//    6:12:14:45.3448    6.12:14:45.3448000          Bad Format  6.12:14:45.3448000
//    6:12:14:45,3448            Bad Format  6.12:14:45.3448000          Bad Format
//    6:34:14:45                   Overflow            Overflow            Overflow

open System
open System.Globalization
open System.Text.RegularExpressions

let values = 
    [| "6"; "6:12"; "6:12:14"; "6:12:14:45" 
       "6.12:14:45"; "6:12:14:45.3448"
       "6:12:14:45,3448"; "6:34:14:45" |]
let cultures = 
    [| CultureInfo "en-US" 
       CultureInfo "ru-RU"
       CultureInfo.InvariantCulture |]

let mutable header = $"""{"String",-17}"""
for culture in cultures do
    header <- header +
        if culture.Equals CultureInfo.InvariantCulture then 
            $"""{"Invariant",20}"""
        else
            $"{culture.Name,20}"
printfn $"{header}\m"

for value in values do
    printf $"{value,-17}"
    for culture in cultures do
        try
            let ts = TimeSpan.Parse(value, culture)
            printf $"{ts,20:c}"
        with
        | :? FormatException ->
            printf $"""{"Bad Format",20}"""
        | :? OverflowException ->
            printf $"""{"Overflow",20}"""
    printfn ""                      
// The example displays the following output:
//    String                          en-US               ru-RU           Invariant
//    
//    6                          6.00:00:00          6.00:00:00          6.00:00:00
//    6:12                         06:12:00            06:12:00            06:12:00
//    6:12:14                      06:12:14            06:12:14            06:12:14
//    6:12:14:45                 6.12:14:45          6.12:14:45          6.12:14:45
//    6.12:14:45                 6.12:14:45          6.12:14:45          6.12:14:45
//    6:12:14:45.3448    6.12:14:45.3448000          Bad Format  6.12:14:45.3448000
//    6:12:14:45,3448            Bad Format  6.12:14:45.3448000          Bad Format
//    6:34:14:45                   Overflow            Overflow            Overflow

Imports System.Globalization
Imports System.Threading

Module Example
   Public Sub Main()
      Dim values() As String = { "6", "6:12", "6:12:14", "6:12:14:45", 
                                 "6.12:14:45", "6:12:14:45.3448", 
                                 "6:12:14:45,3448", "6:34:14:45" }
      Dim cultures() As CultureInfo = { New CultureInfo("en-US"), 
                                        New CultureInfo("ru-RU"),
                                        CultureInfo.InvariantCulture }
      
      Dim header As String = String.Format("{0,-17}", "String")
      For Each culture As CultureInfo In cultures
         header += If(culture.Equals(CultureInfo.InvariantCulture), 
                      String.Format("{0,20}", "Invariant"),
                      String.Format("{0,20}", culture.Name))
      Next
      Console.WriteLine(header)
      Console.WriteLine()
      
      For Each value As String In values
         Console.Write("{0,-17}", value)
         For Each culture As CultureInfo In cultures
            Try
               Dim ts As TimeSpan = TimeSpan.Parse(value, culture)
               Console.Write("{0,20}", ts.ToString("c"))
            Catch e As FormatException
               Console.Write("{0,20}", "Bad Format")
            Catch e As OverflowException
               Console.Write("{0,20}", "Overflow")
            End Try      
         Next
         Console.WriteLine()                                
      Next
   End Sub
End Module
' The example displays the following output:
'    String                          en-US               ru-RU           Invariant
'    
'    6                          6.00:00:00          6.00:00:00          6.00:00:00
'    6:12                         06:12:00            06:12:00            06:12:00
'    6:12:14                      06:12:14            06:12:14            06:12:14
'    6:12:14:45                 6.12:14:45          6.12:14:45          6.12:14:45
'    6.12:14:45                 6.12:14:45          6.12:14:45          6.12:14:45
'    6:12:14:45.3448    6.12:14:45.3448000          Bad Format  6.12:14:45.3448000
'    6:12:14:45,3448            Bad Format  6.12:14:45.3448000          Bad Format
'    6:34:14:45                   Overflow            Overflow            Overflow

注解

此方法尝试使用 formatProvider指定的区域性的每个区域性特定格式分析 input。

formatProvider 参数是一个 IFormatProvider 实现，提供有关返回字符串格式的区域性特定信息。 formatProvider 参数可以是以下任一参数：

一个 CultureInfo 对象，该对象表示其格式设置约定将反映在返回的字符串中的区域性。 CultureInfo.DateTimeFormat 属性返回的 DateTimeFormatInfo 对象定义返回字符串的格式。
定义返回字符串格式的 DateTimeFormatInfo 对象。
实现 IFormatProvider 接口的自定义对象。其 IFormatProvider.GetFormat 方法返回提供格式信息的 DateTimeFormatInfo 对象。

如果 formatProvidernull，则使用与当前区域性关联的 DateTimeFormatInfo 对象。

有关此 API 的详细信息，请参阅 System.TimeSpan.Parse的补充 API 备注。

适用于

Parse(ReadOnlySpan<Char>, IFormatProvider)

Source:: TimeSpan.cs

Source:: TimeSpan.cs

Source:: TimeSpan.cs

使用指定的区域性特定格式信息将时间间隔的跨度表示形式转换为其等效 TimeSpan。

public static TimeSpan Parse (ReadOnlySpan<char> input, IFormatProvider? formatProvider = default);

public static TimeSpan Parse (ReadOnlySpan<char> input, IFormatProvider formatProvider = default);

static member Parse : ReadOnlySpan<char> * IFormatProvider -> TimeSpan

Public Shared Function Parse (input As ReadOnlySpan(Of Char), Optional formatProvider As IFormatProvider = Nothing) As TimeSpan

参数

input: ReadOnlySpan<Char>

一个范围，包含表示要转换的时间间隔的字符。

formatProvider: IFormatProvider

提供区域性特定的格式设置信息的对象。

TimeSpan

对应于由 formatProvider指定的 input的时间间隔。

实现

Parse(ReadOnlySpan<Char>, IFormatProvider)

适用于

Parse(String)

Source:: TimeSpan.cs

Source:: TimeSpan.cs

Source:: TimeSpan.cs

将时间间隔的字符串表示形式转换为其等效 TimeSpan。

public:
 static TimeSpan Parse(System::String ^ s);

public static TimeSpan Parse (string s);

static member Parse : string -> TimeSpan

Public Shared Function Parse (s As String) As TimeSpan

参数

s: String

一个字符串，指定要转换的时间间隔。

TimeSpan

对应于 s的时间间隔。

例外

ArgumentNullException

s null。

FormatException

s 格式无效。

OverflowException

s 表示小于 TimeSpan.MinValue 或大于 TimeSpan.MaxValue的数字。

-或-

至少有一天、小时、分钟或秒组件超出其有效范围。

示例

以下示例使用 Parse 方法将字符串数组中的每个元素转换为 TimeSpan 值。它将目前的系统文化更改为克罗地亚-克罗地亚（“hr-HR”）和美国（“en-US”），以说明当前系统文化如何影响分析操作。

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

public class Example
{
   public static void Main()
   {
      string[] values = { "6", "6:12", "6:12:14", "6:12:14:45", 
                          "6.12:14:45", "6:12:14:45.3448", 
                          "6:12:14:45,3448", "6:34:14:45" };
      string[] cultureNames = { "hr-HR", "en-US"};
      
      // Change the current culture.
      foreach (string cultureName in cultureNames)
      {
         Thread.CurrentThread.CurrentCulture = new CultureInfo(cultureName);
         Console.WriteLine("Current Culture: {0}", 
                           Thread.CurrentThread.CurrentCulture.Name);
         foreach (string value in values)
         {
            try {
               TimeSpan ts = TimeSpan.Parse(value);
               Console.WriteLine("{0} --> {1}", value, ts.ToString("c"));
            }
            catch (FormatException) {
               Console.WriteLine("{0}: Bad Format", value);
            }   
            catch (OverflowException) {
               Console.WriteLine("{0}: Overflow", value);
            }
         } 
         Console.WriteLine();                                
      }
   }
}
// The example displays the following output:
//    Current Culture: hr-HR
//    6 --> 6.00:00:00
//    6:12 --> 06:12:00
//    6:12:14 --> 06:12:14
//    6:12:14:45 --> 6.12:14:45
//    6.12:14:45 --> 6.12:14:45
//    6:12:14:45.3448: Bad Format
//    6:12:14:45,3448 --> 6.12:14:45.3448000
//    6:34:14:45: Overflow
//    
//    Current Culture: en-US
//    6 --> 6.00:00:00
//    6:12 --> 06:12:00
//    6:12:14 --> 06:12:14
//    6:12:14:45 --> 6.12:14:45
//    6.12:14:45 --> 6.12:14:45
//    6:12:14:45.3448 --> 6.12:14:45.3448000
//    6:12:14:45,3448: Bad Format
//    6:34:14:45: Overflow

open System
open System.Globalization
open System.Threading

let values = 
    [| "6"; "6:12"; "6:12:14"; "6:12:14:45" 
       "6.12:14:45"; "6:12:14:45.3448" 
       "6:12:14:45,3448"; "6:34:14:45" |]
let cultureNames = [| "hr-HR"; "en-US" |]

// Change the current culture.
for cultureName in cultureNames do
    Thread.CurrentThread.CurrentCulture <- CultureInfo cultureName
    printfn $"Current Culture: {Thread.CurrentThread.CurrentCulture.Name}" 
    for value in values do
        try 
            let ts = TimeSpan.Parse value
            printfn $"{value} --> {ts:c}"
        with 
        | :? FormatException ->
            printfn $"{value}: Bad Format"
        | :? OverflowException ->
            printfn $"{value}: Overflow"
    printfn ""                                
// The example displays the following output:
//    Current Culture: hr-HR
//    6 --> 6.00:00:00
//    6:12 --> 06:12:00
//    6:12:14 --> 06:12:14
//    6:12:14:45 --> 6.12:14:45
//    6.12:14:45 --> 6.12:14:45
//    6:12:14:45.3448: Bad Format
//    6:12:14:45,3448 --> 6.12:14:45.3448000
//    6:34:14:45: Overflow
//    
//    Current Culture: en-US
//    6 --> 6.00:00:00
//    6:12 --> 06:12:00
//    6:12:14 --> 06:12:14
//    6:12:14:45 --> 6.12:14:45
//    6.12:14:45 --> 6.12:14:45
//    6:12:14:45.3448 --> 6.12:14:45.3448000
//    6:12:14:45,3448: Bad Format
//    6:34:14:45: Overflow

Imports System.Globalization
Imports System.Threading

Module Example
   Public Sub Main()
      Dim values() As String = { "6", "6:12", "6:12:14", "6:12:14:45", 
                                 "6.12:14:45", "6:12:14:45.3448", 
                                 "6:12:14:45,3448", "6:34:14:45" }
      Dim cultureNames() As String = { "hr-HR", "en-US"}
      
      ' Change the current culture.
      For Each cultureName As String In cultureNames
         Thread.CurrentThread.CurrentCulture = New CultureInfo(cultureName)
         Console.WriteLine("Current Culture: {0}", 
                           Thread.CurrentThread.CurrentCulture.Name)
         For Each value As String In values
            Try
               Dim ts As TimeSpan = TimeSpan.Parse(value)
               Console.WriteLine("{0} --> {1}", value, ts.ToString("c"))
            Catch e As FormatException
               Console.WriteLine("{0}: Bad Format", value)
            Catch e As OverflowException
               Console.WriteLine("{0}: Overflow", value)
            End Try      
         Next 
         Console.WriteLine()                                
      Next
   End Sub
End Module
' The example displays the following output:
'       Current Culture: hr-HR
'       6 --> 6.00:00:00
'       6:12 --> 06:12:00
'       6:12:14 --> 06:12:14
'       6:12:14:45 --> 6.12:14:45
'       6.12:14:45 --> 6.12:14:45
'       6:12:14:45.3448: Bad Format
'       6:12:14:45,3448 --> 6.12:14:45.3448000
'       6:34:14:45: Overflow
'       
'       Current Culture: en-US
'       6 --> 6.00:00:00
'       6:12 --> 06:12:00
'       6:12:14 --> 06:12:14
'       6:12:14:45 --> 6.12:14:45
'       6.12:14:45 --> 6.12:14:45
'       6:12:14:45.3448 --> 6.12:14:45.3448000
'       6:12:14:45,3448: Bad Format
'       6:34:14:45: Overflow

注解

有关此 API 的详细信息，请参阅 TimeSpan.Parse的补充 API 备注。

适用于

AI 技能盛会

通过

TimeSpan.Parse 方法

定义

重载

Parse(String, IFormatProvider)

参数

返回

实现

例外

示例

注解

适用于

Parse(ReadOnlySpan<Char>, IFormatProvider)

参数

返回

实现

适用于

Parse(String)

参数

返回

例外

示例

注解

适用于

其他资源