var resultList = new List<int>();
resultList.Add(1);
resultList.Add(2);
resultList.Add(3);
// Removes the number 1 from the index 0 in the list
resultlist.RemoveAt(0);
// Allows you to remove an Object from the list instead
var itemToRemove = resultlist.Single(r => r.Id == 2);
resultList.Remove(itemToRemove);
list.Remove("Example String"); // Remove by value
list.RemoveAt(3); // Remove at index
list.RemoveRange(6, 3); // Remove range (removes 3 items starting at 6th position in this example)
resultlist.RemoveAt(1);
arr.Remove("Three");