What is IndexOutOfRangeException in C#

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Ravi Vishwakarma · Answer

The 
IndexOutOfRangeException is an exception in C#, Which arises when you access an
index that is not present in an array, 
collection, or other indexed data structure that is outside the valid range of indices. This typically happens when you try to access an element at an index that is
less than zero or greater than or equal to the length of the collection.
Here's an example of how this exception might occur:
int[] numbers = { 1, 2, 3, 4, 5 };
Console.WriteLine(numbers[5]); // Attempting to access index 5, which is out of bounds
When you run this code, it will throw an IndexOutOfRangeException because the valid indices for the
numbers array range from 0 to 4 (inclusive), but we attempted to access
index 5, which doesn't exist.
To prevent this exception, always ensure that you are accessing indices within the valid range of the collection. You can use
conditional statements or loops to check the bounds before accessing elements or use methods like
TryGetValue for dictionaries or ElementAtOrDefault for
LINQ queries, which handle out-of-range situations gracefully by returning default values instead of throwing exceptions.

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What is IndexOutOfRangeException in C#

Ravi Vishwakarma

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