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  1. using System;
  2.  
  3. public class Test
  4. {
  5.     public class A
  6.     {
  7.         public int D { get; set; }
  8.         public override string ToString()
  9.         {
  10.             return D.ToString();
  11.         }
  12.     }
  13.  
  14.     public static void Main()
  15.     {
  16.         Console.WriteLine(string.Format("a{0}b{1}c{2}", new[] { new A { D = 1 }, new A { D = 2 }, new A { D = 3 } }));
  17.         // next causes format exception
  18.         Console.WriteLine(string.Format("a{0}b{1}c", new[] { DateTime.Now, DateTime.Now }));
  19.         Console.WriteLine(string.Format("a{0}b{1}c{2}", new[] { 1, 5, 6 }));
  20.     }
  21. }
Runtime error #stdin #stdout #stderr 0.07s 28208KB
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stdin
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Standard input is empty
stdout
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a1b2c3
stderr
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Unhandled Exception:
System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
  at System.String.FormatHelper (System.Text.StringBuilder result, IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in <filename unknown>:0 
  at System.String.Format (IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in <filename unknown>:0 
  at System.String.Format (System.String format, System.Object arg0) [0x00000] in <filename unknown>:0 
  at Test.Main () [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
  at System.String.FormatHelper (System.Text.StringBuilder result, IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in <filename unknown>:0 
  at System.String.Format (IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in <filename unknown>:0 
  at System.String.Format (System.String format, System.Object arg0) [0x00000] in <filename unknown>:0 
  at Test.Main () [0x00000] in <filename unknown>:0
https://ideone.com/8oQt4G
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
secret

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