TimeSpan.TryParse 方法
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
將指定的時間間隔字串表示，轉換為其相等的 TimeSpan，並傳回一個值表示轉換是否成功。
多載
| TryParse(String, IFormatProvider, TimeSpan) |
使用指定的特定文件特性格式資訊，將時間間隔的字串表示轉換為其相等的 TimeSpan，並傳回表示轉換是否成功的值。 |
| TryParse(ReadOnlySpan<Char>, IFormatProvider, TimeSpan) |
使用指定的特定文件特性格式資訊，將時間間隔的範圍表示轉換為其對等的 TimeSpan，並傳回值以指出轉換是否成功。 |
| TryParse(ReadOnlySpan<Char>, TimeSpan) |
將時間間隔的範圍表示轉換為其對等的 TimeSpan，並傳回值以指出轉換是否成功。 |
| TryParse(String, TimeSpan) |
將時間間隔的字串表示，轉換為其相等的 TimeSpan，並傳回一個值表示轉換是否成功。 |
TryParse(String, IFormatProvider, TimeSpan)
使用指定的特定文件特性格式資訊，將時間間隔的字串表示轉換為其相等的 TimeSpan，並傳回表示轉換是否成功的值。
public:
static bool TryParse(System::String ^ input, IFormatProvider ^ formatProvider, [Runtime::InteropServices::Out] TimeSpan % result);public:
static bool TryParse(System::String ^ input, IFormatProvider ^ formatProvider, [Runtime::InteropServices::Out] TimeSpan % result) = IParsable<TimeSpan>::TryParse;public static bool TryParse (string input, IFormatProvider formatProvider, out TimeSpan result);public static bool TryParse (string? input, IFormatProvider? formatProvider, out TimeSpan result);static member TryParse : string * IFormatProvider * TimeSpan -> boolPublic Shared Function TryParse (input As String, formatProvider As IFormatProvider, ByRef result As TimeSpan) As Boolean參數
- input
- String
字串，指定要轉換的時間間隔。
- formatProvider
- IFormatProvider
物件，提供特定文化特性格式資訊。
傳回
如果 input 轉換成功，則為 true，否則為 false。 如果 參數為 或 ，則這個作業會input傳回false無效的格式、代表小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue 的時間間隔，或至少有一天、小時、分鐘或秒數元件超出其有效範圍。Emptynull
範例
下列範例會定義 物件的陣列 CultureInfo ，並在呼叫 TryParse(String, IFormatProvider, TimeSpan) 方法時使用每個物件來剖析字串數位列中的專案。 此範例說明特定文化特性的慣例如何影響格式化作業。
using System;
using System.Globalization;
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)
{
TimeSpan interval = new TimeSpan();
if (TimeSpan.TryParse(value, culture, out interval))
Console.Write("{0,20}", interval.ToString("c"));
else
Console.Write("{0,20}", "Unable to Parse");
}
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 Unable to Parse 6.12:14:45.3448000
// 6:12:14:45,3448 Unable to Parse 6.12:14:45.3448000 Unable to Parse
// 6:34:14:45 Unable to Parse Unable to Parse Unable to Parse
open System
open System.Globalization
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.Format("{0,-17}", "String")
for culture in cultures do
header <-
if culture.Equals CultureInfo.InvariantCulture then
String.Format("{0,20}", "Invariant")
else
String.Format("{0,20}", culture.Name)
printfn $"{header}\n"
for value in values do
printf $"{value,-17}"
for culture in cultures do
match TimeSpan.TryParse(value, culture) with
| true, interval ->
printfn $"{interval,20:c}"
| _ ->
printfn "%20s" "Unable to Parse"
// 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 Unable to Parse 6.12:14:45.3448000
// 6:12:14:45,3448 Unable to Parse 6.12:14:45.3448000 Unable to Parse
// 6:34:14:45 Unable to Parse Unable to Parse Unable to Parse
Imports System.Globalization
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
Dim interval As New TimeSpan()
If TimeSpan.TryParse(value, culture, interval) Then
Console.Write("{0,20}", interval.ToString("c"))
Else
Console.Write("{0,20}", "Unable to Parse")
End If
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 Unable to Parse 6.12:14:45.3448000
' 6:12:14:45,3448 Unable to Parse 6.12:14:45.3448000 Unable to Parse
' 6:34:14:45 Unable to Parse Unable to Parse Unable to Parse
備註
如需此 API 的詳細資訊，請參閱 TimeSpan.TryParse 的補充 API 備註。
適用於
TryParse(ReadOnlySpan<Char>, IFormatProvider, TimeSpan)
使用指定的特定文件特性格式資訊，將時間間隔的範圍表示轉換為其對等的 TimeSpan，並傳回值以指出轉換是否成功。
public:
static bool TryParse(ReadOnlySpan<char> input, IFormatProvider ^ formatProvider, [Runtime::InteropServices::Out] TimeSpan % result);public:
static bool TryParse(ReadOnlySpan<char> input, IFormatProvider ^ formatProvider, [Runtime::InteropServices::Out] TimeSpan % result) = ISpanParsable<TimeSpan>::TryParse;public static bool TryParse (ReadOnlySpan<char> input, IFormatProvider? formatProvider, out TimeSpan result);public static bool TryParse (ReadOnlySpan<char> input, IFormatProvider formatProvider, out TimeSpan result);static member TryParse : ReadOnlySpan<char> * IFormatProvider * TimeSpan -> boolPublic Shared Function TryParse (input As ReadOnlySpan(Of Char), formatProvider As IFormatProvider, ByRef result As TimeSpan) As Boolean參數
- input
- ReadOnlySpan<Char>
範圍，其包含代表要轉換時間間隔的字元。
- formatProvider
- IFormatProvider
物件，提供特定文化特性格式資訊。
傳回
如果 input 轉換成功，則為 true，否則為 false。 如果 參數為 或 ，則這個作業會input傳回false無效的格式、代表小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue 的時間間隔，或至少有一天、小時、分鐘或秒數元件超出其有效範圍。Emptynull
適用於
TryParse(ReadOnlySpan<Char>, TimeSpan)
將時間間隔的範圍表示轉換為其對等的 TimeSpan，並傳回值以指出轉換是否成功。
public:
static bool TryParse(ReadOnlySpan<char> s, [Runtime::InteropServices::Out] TimeSpan % result);public static bool TryParse (ReadOnlySpan<char> s, out TimeSpan result);static member TryParse : ReadOnlySpan<char> * TimeSpan -> boolPublic Shared Function TryParse (s As ReadOnlySpan(Of Char), ByRef result As TimeSpan) As Boolean參數
- s
- ReadOnlySpan<Char>
範圍，其包含代表要轉換時間間隔的字元。
傳回
如果 s 轉換成功，則為 true，否則為 false。 如果 參數為 或 ，則這個作業會s傳回false無效的格式、代表小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue 的時間間隔，或至少有一天、小時、分鐘或秒數元件超出其有效範圍。Emptynull
適用於
TryParse(String, TimeSpan)
將時間間隔的字串表示，轉換為其相等的 TimeSpan，並傳回一個值表示轉換是否成功。
public:
static bool TryParse(System::String ^ s, [Runtime::InteropServices::Out] TimeSpan % result);public static bool TryParse (string s, out TimeSpan result);public static bool TryParse (string? s, out TimeSpan result);static member TryParse : string * TimeSpan -> boolPublic Shared Function TryParse (s As String, ByRef result As TimeSpan) As Boolean參數
- s
- String
字串，指定要轉換的時間間隔。
傳回
如果 s 轉換成功，則為 true，否則為 false。 如果 參數為 或 ，則這個作業會s傳回false無效的格式、代表小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue 的時間間隔，或至少有一天、小時、分鐘或秒數元件超出其有效範圍。Emptynull
範例
下列範例會TryParse使用 方法從有效的TimeSpan字串建立TimeSpan物件，並指出剖析作業何時失敗，因為時間範圍字串無效。
using System;
public class TryParse
{
private static void ParseTimeSpan(string intervalStr)
{
// Write the first part of the output line.
Console.Write( "{0,20} ", intervalStr );
// Parse the parameter, and then convert it back to a string.
TimeSpan intervalVal;
if (TimeSpan.TryParse(intervalStr, out intervalVal))
{
string intervalToStr = intervalVal.ToString();
// Pad the end of the TimeSpan string with spaces if it
// does not contain milliseconds.
int pIndex = intervalToStr.IndexOf(':');
pIndex = intervalToStr.IndexOf('.', pIndex);
if (pIndex < 0)
intervalToStr += " ";
Console.WriteLine("{0,21}", intervalToStr);
// Handle failure of TryParse method.
}
else
{
Console.WriteLine("Parse operation failed.");
}
}
public static void Main()
{
Console.WriteLine( "{0,20} {1,21}",
"String to Parse", "TimeSpan" );
Console.WriteLine( "{0,20} {1,21}",
"---------------", "---------------------" );
ParseTimeSpan("0");
ParseTimeSpan("14");
ParseTimeSpan("1:2:3");
ParseTimeSpan("0:0:0.250");
ParseTimeSpan("10.20:30:40.50");
ParseTimeSpan("99.23:59:59.9999999");
ParseTimeSpan("0023:0059:0059.0099");
ParseTimeSpan("23:0:0");
ParseTimeSpan("24:0:0");
ParseTimeSpan("0:59:0");
ParseTimeSpan("0:60:0");
ParseTimeSpan("0:0:59");
ParseTimeSpan("0:0:60");
ParseTimeSpan("10:");
ParseTimeSpan("10:0");
ParseTimeSpan(":10");
ParseTimeSpan("0:10");
ParseTimeSpan("10:20:");
ParseTimeSpan("10:20:0");
ParseTimeSpan(".123");
ParseTimeSpan("0.12:00");
ParseTimeSpan("10.");
ParseTimeSpan("10.12");
ParseTimeSpan("10.12:00");
}
}
// String to Parse TimeSpan
// --------------- ---------------------
// 0 00:00:00
// 14 14.00:00:00
// 1:2:3 01:02:03
// 0:0:0.250 00:00:00.2500000
// 10.20:30:40.50 10.20:30:40.5000000
// 99.23:59:59.9999999 99.23:59:59.9999999
// 0023:0059:0059.0099 23:59:59.0099000
// 23:0:0 23:00:00
// 24:0:0 Parse operation failed.
// 0:59:0 00:59:00
// 0:60:0 Parse operation failed.
// 0:0:59 00:00:59
// 0:0:60 Parse operation failed.
// 10: Parse operation failed.
// 10:0 10:00:00
// :10 Parse operation failed.
// 0:10 00:10:00
// 10:20: Parse operation failed.
// 10:20:0 10:20:00
// .123 Parse operation failed.
// 0.12:00 12:00:00
// 10. Parse operation failed.
// 10.12 Parse operation failed.
// 10.12:00 10.12:00:00
open System
let parseTimeSpan intervalStr =
// Write the first part of the output line.
printf $"%20s{intervalStr} "
// Parse the parameter, and then convert it back to a string.
match TimeSpan.TryParse intervalStr with
| true, intervalVal ->
let intervalToStr = string intervalVal
// Pad the end of the TimeSpan string with spaces if it
// does not contain milliseconds.
let pIndex = intervalToStr.IndexOf ':'
let pIndex = intervalToStr.IndexOf('.', pIndex)
let intervalToStr =
if pIndex < 0 then
intervalToStr + " "
else intervalStr
printfn $"{intervalToStr,21}"
// Handle failure of TryParse method.
| _ ->
printfn "Parse operation failed."
printfn "%20s %21s" "String to Parse" "TimeSpan"
printfn "%20s %21s" "---------------" "---------------------"
parseTimeSpan "0"
parseTimeSpan "14"
parseTimeSpan "1:2:3"
parseTimeSpan "0:0:0.250"
parseTimeSpan "10.20:30:40.50"
parseTimeSpan "99.23:59:59.9999999"
parseTimeSpan "0023:0059:0059.0099"
parseTimeSpan "23:0:0"
parseTimeSpan "24:0:0"
parseTimeSpan "0:59:0"
parseTimeSpan "0:60:0"
parseTimeSpan "0:0:59"
parseTimeSpan "0:0:60"
parseTimeSpan "10:"
parseTimeSpan "10:0"
parseTimeSpan ":10"
parseTimeSpan "0:10"
parseTimeSpan "10:20:"
parseTimeSpan "10:20:0"
parseTimeSpan ".123"
parseTimeSpan "0.12:00"
parseTimeSpan "10."
parseTimeSpan "10.12"
parseTimeSpan "10.12:00"
// String to Parse TimeSpan
// --------------- ---------------------
// 0 00:00:00
// 14 14.00:00:00
// 1:2:3 01:02:03
// 0:0:0.250 00:00:00.2500000
// 10.20:30:40.50 10.20:30:40.5000000
// 99.23:59:59.9999999 99.23:59:59.9999999
// 0023:0059:0059.0099 23:59:59.0099000
// 23:0:0 23:00:00
// 24:0:0 Parse operation failed.
// 0:59:0 00:59:00
// 0:60:0 Parse operation failed.
// 0:0:59 00:00:59
// 0:0:60 Parse operation failed.
// 10: Parse operation failed.
// 10:0 10:00:00
// :10 Parse operation failed.
// 0:10 00:10:00
// 10:20: Parse operation failed.
// 10:20:0 10:20:00
// .123 Parse operation failed.
// 0.12:00 12:00:00
// 10. Parse operation failed.
// 10.12 Parse operation failed.
// 10.12:00 10.12:00:00
Module TryParse
Sub ParseTimeSpan( intervalStr As String )
' Write the first part of the output line.
Console.Write( "{0,20} ", intervalStr )
' Parse the parameter, and then convert it back to a string.
Dim intervalVal As TimeSpan
If TimeSpan.TryParse( intervalStr, intervalVal ) Then
Dim intervalToStr As String = intervalVal.ToString( )
' Pad the end of the TimeSpan string with spaces if it
' does not contain milliseconds.
Dim pIndex As Integer = intervalToStr.IndexOf( ":"c )
pIndex = intervalToStr.IndexOf( "."c, pIndex )
If pIndex < 0 Then intervalToStr &= " "
Console.WriteLine( "{0,21}", intervalToStr )
' Handle failure of TryParse method.
Else
Console.WriteLine("Parse operation failed.")
End If
End Sub
Public Sub Main( )
Console.WriteLine( "{0,20} {1,21}", _
"String to Parse", "TimeSpan" )
Console.WriteLine( "{0,20} {1,21}", _
"---------------", "---------------------" )
ParseTimeSpan("0")
ParseTimeSpan("14")
ParseTimeSpan("1:2:3")
ParseTimeSpan("0:0:0.250")
ParseTimeSpan("10.20:30:40.50")
ParseTimeSpan("99.23:59:59.9999999")
ParseTimeSpan("0023:0059:0059.0099")
ParseTimeSpan("23:0:0")
ParseTimeSpan("24:0:0")
ParseTimespan("0:59:0")
ParseTimeSpan("0:60:0")
ParseTimespan("0:0:59")
ParseTimeSpan("0:0:60")
ParseTimeSpan("10:")
ParsetimeSpan("10:0")
ParseTimeSpan(":10")
ParseTimeSpan("0:10")
ParseTimeSpan("10:20:")
ParseTimeSpan("10:20:0")
ParseTimeSpan(".123")
ParseTimeSpan("0.12:00")
ParseTimeSpan("10.")
ParseTimeSpan("10.12")
ParseTimeSpan("10.12:00")
End Sub
End Module
' This example generates the following output:
' String to Parse TimeSpan
' --------------- ---------------------
' 0 00:00:00
' 14 14.00:00:00
' 1:2:3 01:02:03
' 0:0:0.250 00:00:00.2500000
' 10.20:30:40.50 10.20:30:40.5000000
' 99.23:59:59.9999999 99.23:59:59.9999999
' 0023:0059:0059.0099 23:59:59.0099000
' 23:0:0 23:00:00
' 24:0:0 Parse operation failed.
' 0:59:0 00:59:00
' 0:60:0 Parse operation failed.
' 0:0:59 00:00:59
' 0:0:60 Parse operation failed.
' 10: Parse operation failed.
' 10:0 10:00:00
' :10 Parse operation failed.
' 0:10 00:10:00
' 10:20: Parse operation failed.
' 10:20:0 10:20:00
' .123 Parse operation failed.
' 0.12:00 12:00:00
' 10. Parse operation failed.
' 10.12 Parse operation failed.
' 10.12:00 10.12:00:00
備註
如需此 API 的詳細資訊，請參閱 TimeSpan.TryParse 的補充 API 備註。
適用於
意見反應
即將推出：在 2024 年，我們將隨著內容的意見反應機制逐步淘汰 GitHub 問題，並以新的意見反應系統來取代。 如需詳細資訊，請參閱 https://aka.ms/ContentUserFeedback。
提交並檢視相關的意見反應