The following Microsoft intermediate language (MSIL) instructions throw IndexOutOfRangeException :

• ldelem.<type>

• ldelema

• stelem.<type>

IndexOutOfRangeException uses the HRESULT COR_E_INDEXOUTOFRANGE, which has the value 0x80131508.

The most common causes of this exception are miscalculating a lookup index, or using the wrong start or end point when iterating. For other causes, see Troubleshooting Exceptions: System.IndexOutOfRangeException.

For a list of initial property values for an instance of IndexOutOfRangeException, see the IndexOutOfRangeException constructors.

The following example demonstrates an error that causes a IndexOutOfRangeException exception.

using System;
public class IndexRangeTest {
 public static void Main() {
   int[] array = {0,0,0};
   try {
     for (int i = 0; i<4; i++) {
       Console.WriteLine("array[{0}] = {1}",i,array[i]);
     }
   }
   catch (IndexOutOfRangeException e) {
     Console.WriteLine("Error: {0}",e);
   }
 }
}
   

The output is

array[0] = 0
array[1] = 0
array[2] = 0
Error: System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at IndexRangeTest.Main()