Check if element at position [x] exists in the list
Solution 1:
if(list.ElementAtOrDefault(2) != null)
{
// logic
}
ElementAtOrDefault() is part of the System.Linq namespace.
Although you have a List, so you can use list.Count > 2.
Solution 2:
if (list.Count > desiredIndex && list[desiredIndex] != null)
{
// logic
}