C# Parse and TryParse 方法詳解

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工作中遇到的常用方法：

Parse and TryParse 

TryParse  方法類似於 Parse 方法，不同之處在於 TryParse 方法在轉換失敗時不引發異常

 

 1  /// <summary> 2         /// TryParse  方法類似於 Parse 方法，不同之處在於 TryParse 方法在轉換失敗時不引發異常 3         /// </summary> 4         public static void TryParseExample() 5         { 6             String[] values = { null, "160519", "9432.0", "16,667", "   -322   ", "+4302", "(100);", "01FA", "ab123" }; 7             foreach (var value in values) 8             { 9                 int number;10 11                 bool result = Int32.TryParse(value, out number);12                 if (result)13                 {14                     Console.WriteLine("Converted ‘{0}‘ to {1}.", value, number);15                 }16                 else17                 {18                     //            if (value == null) value = ""; 19                     Console.WriteLine("Attempted conversion of ‘{0}‘ failed.",20                                        value == null ? "<null>" : value);21                 }22             }23         }24 25         /// <summary>26         /// 27         /// </summary>28         public static void ParseExample()29         {30             String[] values = { null, "160519", "9432.0", "16,667", "   -322   ", "+4302", "(100);", "01FA", "ab123" };31             foreach (var value in values)32             {33                 try34                 {35                     int result = Int32.Parse(value);36                     Console.WriteLine("Converted ‘{0}‘ to {1}.", value, result);37                 }38                 catch (Exception ex)39                 {40                     Console.WriteLine("Unable to convert ‘{0}‘.", value);41                     Console.WriteLine(string.Format("{0}-{1}", ex.Message, ex.GetType()));42                 }43             }44         }

 

C# Parse and TryParse 方法詳解