C# list add index

- C# list add index was outside the bounds of the array
- C# list add index 0
- C# list add index out of range
- C# list add indexoutofrangeexception
- C# list add first index
- C# list add specific index
- C# list add after index
- C# list add item at index
- C# list add range at index
- C# list add item specific index
- C# linq add index to list
- C# list add get index
- C# list add return index