逗號分隔的時間正則表達式c＃？

Question

我想寫的正則表達式如下模式

pattern = "Time hh:mm separated by comma + # + Time hh:mm separated by comma"; 

我是新手使用正則表達式，所以學習Quick start regex tutorial後，我寫了這個：

(([0-1][0-9]|[2][0-3]):([0-5][0-9]))+(,+(([0-1][0-9]|[2][0-3]):([0-5][0-9])) 
?+,*)*+(#)+(([0-1][0-9]|[2][0-3]):([0-5][0-9]))+(,+(([0-1][0-9]|[2][0-3]):([0-5] 
[0-9]))?+,*)* 

這個正則表達式有一些問題。它匹配了一些無效的字符串也喜歡：

- 02:00,#03:00 

- 02:00#03:00, 

有效的字符串：

- 02:00#03:00 

- 02:00,04:00,06:00#03:00 

- 02:00#03:00,06:00 

而且它也不會正確地創建組，我想在下面的順序來建立羣組：

如果字符串是02:00,04:00,06:00#03:00那麼組應該是：

- 02:00 
- 04:00 
- 06:00 
- # 
- 03:00 

任何人都可以請h讓我讓這個正則表達式按預期工作？

Answer 1

\s(([0-1]\d|[2][0-3]):([0-5]\d))((,(([0-1]\d|[2][0-3]):([0-5]\d)))*)#(([0-1]\d|[2][0-3]):([0-5]\d))((,(([0-1]\d|[2][0-3]):([0-5]\d)))*)\s 

或者：

String time = "(([0-1]\\d|[2][0-3]):([0-5]\\d))"; 
String timeSequence = time + "((," + time + ")*)"; 
String regex = "\\s" + timeSequence + "#" + timeSequence + "\\s"; 

Answer 2

你可以做，沒有使用正則表達式，如：

string str = "02:00,04:00,06:00#03:00"; 
TimeSpan temp; 
bool ifValid = str.Split(new[] { ',', '#' }) 
        .All(r => TimeSpan.TryParseExact(r, @"hh\:mm",CultureInfo.InvariantCulture, out temp)); 

您可以提取出來像一個函數：

public bool CheckValid(string str) 
{ 
    TimeSpan temp; 
    return str.Split(new[] { ',', '#' }) 
         .All(r => TimeSpan.TryParseExact 
                (r, 
                 @"hh\:mm", 
                 CultureInfo.InvariantCulture, 
                 out temp)); 
} 

和然後檢查工作如：

List<string> validStrings = new List<string> 
{ 
    "02:00#03:00", 
    "02:00,04:00,06:00#03:00", 
    "02:00#03:00,06:00" 
}; 
Console.WriteLine("VALID Strings"); 
Console.WriteLine("============================"); 
foreach (var item in validStrings) 
{ 
    Console.WriteLine("Result: {0}, string: {1}", CheckValid(item), item); 
} 

Console.WriteLine("INVALID strings"); 
Console.WriteLine("============================"); 
List<string> invalidStrings = new List<string> 
{ 
    "02:00,#03:00", 
    "02:00#03:00,", 
}; 

foreach (var item in invalidStrings) 
{ 
    Console.WriteLine("Result: {0}, string: {1}", CheckValid(item), item); 
} 

輸出將是：

VALID Strings 
============================ 
Result: True, string: 02:00#03:00 
Result: True, string: 02:00,04:00,06:00#03:00 
Result: True, string: 02:00#03:00,06:00 
INVALID strings 
============================ 
Result: False, string: 02:00,#03:00 
Result: False, string: 02:00#03:00,