IndexOutOfRangeException

- [Instructor] Another common error in C# … as well as other programming languages … is the Index Out of Range Error … or the Index Out of Range Exception. … This error occurs when the program tries to access … an element in a collection using an index … that exceeds the collection's boundaries. … Typically, the first element in a collection … is located at index zero … and the last element is at index n minus one, … where n is the length or size of the collection. … If you attempt to access an element … outside of these boundaries, either with a negative index … or an index that is larger than the length minus one, … you will get an error because you are accessing something … that doesn't exist inside of the collection. … Let's take a look at an example of this in code. … In this program, we have an array called numbers … and we put five items into it. … Then we print out the item at index zero, … index negative one, and index five. … Let's run the program and see what happens. … And so the item at index zero is going to be 10 …