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  1. //C# Generic String Parser Extension Method
  2. using System;
  3. using System.ComponentModel;
  4.  
  5. public class Test
  6. {
  7. 	public static void Main()
  8. 	{
  9. 		string s = "32";
  10. 		int i = s.As<int>() + 10;
  11. 		Console.WriteLine(i);
  12. 		string b = "false";
  13. 		if(b.As<bool>())
  14. 		{
  15. 			Console.WriteLine("True");
  16. 		}
  17. 		else
  18. 		{
  19. 			Console.WriteLine("False");
  20. 		}
  21. 	}
  22. }
  23.  
  24.  
  25. /*
  26. C# Generic String Parser Extension Method
  27. Usage Example
  28. string s = "32";
  29. int i = s.As<int>();
  30. */
  31. public static class StringExtensions
  32.     {        
  33.         public static T As<T>(this string strValue, T defaultValue)
  34.         {
  35.             T output = defaultValue;
  36.             if (output == null)
  37.             {
  38.                 output = default(T);
  39.             }
  40.             TypeConverter converter = TypeDescriptor.GetConverter(typeof(T));
  41.             if (converter != null)
  42.             {
  43.                 try
  44.                 {
  45.                     output = (T)converter.ConvertFromString(strValue);
  46.                 }
  47.                 catch (Exception ex)
  48.                 {
  49.                     throw ex;
  50.                 }
  51.             }
  52.  
  53.             return output;
  54.         }
  55.  
  56.         public static T As<T>(this string strValue)
  57.         {
  58.             return strValue.As<T>(default(T));
  59.         }
  60. }
Success #stdin #stdout 0.06s 37320KB
comments (?)
stdin 
Standard input is empty
stdout 
42
False
https://ideone.com/ZP5xo
language:
C# (gmcs 5.20.1)
created:
13 years ago
visibility:
public

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