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  1. using System;
  2.  
  3. public static class NumericParsingExtender
  4. {
  5.     public static Int32 ToInt32(this String input, Int32 defaultValue = 0)
  6.     {
  7.       if (String.IsNullOrEmpty(input)) return defaultValue;
  8.       Int32 val;
  9.       return Int32.TryParse(input, out val) ? val : defaultValue;
  10.     }
  11. }
  12.  
  13. public class PseudoControl
  14. {
  15.     public String Text { get; set; }
  16.     public PseudoControl(String text)
  17.     {
  18.         this.Text = text;
  19.     }
  20. }
  21.  
  22. public class Test
  23. {
  24. 	public static void Main()
  25. 	{
  26. 		PseudoControl txtChild1 = new PseudoControl("12");
  27.         PseudoControl txtChild2 = new PseudoControl(null);
  28.         PseudoControl txtChild3 = new PseudoControl(String.Empty);
  29.         PseudoControl txtWife1 = new PseudoControl("42");
  30.         PseudoControl txtWife2 = new PseudoControl("invalid");
  31.         PseudoControl txtWife3 = new PseudoControl("20.13");
  32.  
  33.         Int32 total = txtChild1.Text.ToInt32()
  34.             + txtChild2.Text.ToInt32()
  35.             + txtChild3.Text.ToInt32()
  36.             + txtWife1.Text.ToInt32()
  37.             + txtWife2.Text.ToInt32()
  38.             + txtWife3.Text.ToInt32();
  39.         Console.WriteLine("Total: {0}", total);
  40. 	}
  41. }
Success #stdin #stdout 0.04s 33928KB
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Standard input is empty
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Total: 54
https://ideone.com/vEhc5L
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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