共用方式為

TimeSpan.TryParse 方法

  • 參考

定義

命名空間:
System
組件:
System.Runtime.dll
組件:
mscorlib.dll
組件:
netstandard.dll

將時間間隔的指定字串表示轉換為其 TimeSpan 對等專案，並傳回值，指出轉換是否成功。

多載

TryParse(String, TimeSpan)

將時間間隔的字串表示轉換為其相等的 TimeSpan，並傳回值，指出轉換是否成功。
TryParse(ReadOnlySpan<Char>, IFormatProvider, TimeSpan)

使用指定的特定文化特性格式資訊，將時間間隔的範圍表示轉換為其相等的 TimeSpan，並傳回值，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相等的 TimeSpan，並傳回值，指出轉換是否成功。
TryParse(String, IFormatProvider, TimeSpan)

使用指定的特定文化特性格式資訊，將時間間隔的字串表示轉換為其相等的 TimeSpan，並傳回值，指出轉換是否成功。

TryParse(String, TimeSpan)

來源:
TimeSpan.cs
來源:
TimeSpan.cs
來源:
TimeSpan.cs

將時間間隔的字串表示轉換為其相等的 TimeSpan，並傳回值，指出轉換是否成功。

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 -> bool
Public 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。

result
TimeSpan

當這個方法傳回時，會包含 物件，代表由 s指定的時間間隔，如果轉換失敗，則為 Zero。 這個參數會未初始化傳遞。

傳回

Boolean

如果成功轉換 s，true;否則，false。 如果 s 參數是 null 或 Empty，則此作業會傳回 false ，其格式無效，表示時間間隔小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue，或至少有一天、小時、分鐘或秒元件超出其有效範圍。

範例

下列範例會使用 TryParse 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

TryParse(ReadOnlySpan<Char>, IFormatProvider, TimeSpan)

來源:
TimeSpan.cs
來源:
TimeSpan.cs
來源:
TimeSpan.cs

使用指定的特定文化特性格式資訊，將時間間隔的範圍表示轉換為其相等的 TimeSpan，並傳回值，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 -> bool
Public Shared Function TryParse (input As ReadOnlySpan(Of Char), formatProvider As IFormatProvider, ByRef result As TimeSpan) As Boolean

參數

input
ReadOnlySpan<Char>

範圍，包含表示要轉換之時間間隔的字元。

formatProvider
IFormatProvider

物件，提供特定文化特性的格式資訊。

result
TimeSpan

當這個方法傳回時，會包含 物件，代表由 input指定的時間間隔，如果轉換失敗，則為 Zero。 這個參數會未初始化傳遞。

傳回

Boolean

如果成功轉換 input，true;否則，false。 如果 input 參數是 null 或 Empty，則此作業會傳回 false ，其格式無效，表示時間間隔小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue，或至少有一天、小時、分鐘或秒元件超出其有效範圍。

適用於

TryParse(ReadOnlySpan<Char>, TimeSpan)

來源:
TimeSpan.cs
來源:
TimeSpan.cs
來源:
TimeSpan.cs

將時間間隔的範圍表示轉換為其相等的 TimeSpan，並傳回值，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 -> bool
Public Shared Function TryParse (s As ReadOnlySpan(Of Char), ByRef result As TimeSpan) As Boolean

參數

s
ReadOnlySpan<Char>

範圍，包含表示要轉換之時間間隔的字元。

result
TimeSpan

當這個方法傳回時，會包含 物件，代表由 s指定的時間間隔，如果轉換失敗，則為 Zero。 這個參數會未初始化傳遞。

傳回

Boolean

如果成功轉換 s，true;否則，false。 如果 s 參數是 null 或 Empty，則此作業會傳回 false ，其格式無效，表示時間間隔小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue，或至少有一天、小時、分鐘或秒元件超出其有效範圍。

適用於

TryParse(String, IFormatProvider, TimeSpan)

來源:
TimeSpan.cs
來源:
TimeSpan.cs
來源:
TimeSpan.cs

使用指定的特定文化特性格式資訊，將時間間隔的字串表示轉換為其相等的 TimeSpan，並傳回值，指出轉換是否成功。

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 -> bool
Public 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，提供特定文化特性的格式資訊。

result
TimeSpan

當這個方法傳回時，會包含 物件，代表由 input指定的時間間隔，如果轉換失敗，則為 Zero。 這個參數會未初始化傳遞。

傳回

Boolean

如果成功轉換 input，true;否則，false。 如果 input 參數是 null 或 Empty，則此作業會傳回 false ，其格式無效，表示時間間隔小於 TimeSpan.MinValue 或大於 TimeSpan.MaxValue，或至少有一天、小時、分鐘或秒元件超出其有效範圍。

範例

下列範例會定義 CultureInfo 物件的陣列，並在呼叫 TryParse(String, IFormatProvider, TimeSpan) 方法時使用每個物件來剖析字串陣列中的專案。 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