Hello.

As I know. List Add method works as below.

List<string> cities = new List<string>();
cities.Add("New York");
cities.Add("Mumbai");
cities.Add("Berlin");
cities.Add("Istanbul");

If I designed the data structure as this

List<object> lstObj = new List<object>();            
if (true)  // string members
{
    cities.Add("New York");
    cities.Add("Istanbul");
}
else // List obj members here 
{
    List<object> AListObject= new List<object>();
    cities.Add(AListObject);  // how to handle this?
}

Does the List Add method works or not if I add different types members in the same function.