工作中遇到的常用方法:
Parse and TryParse
TryParse 方法类似于 Parse 方法,不同之处在于 TryParse 方法在转换失败时不引发异常
1 /// <summary> 2 /// TryParse 方法类似于 Parse 方法,不同之处在于 TryParse 方法在转换失败时不引发异常 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 else 17 { 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 try 34 { 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 }