Passing arguments to C# generic new() of templated

Question

I'm trying to create a new object of type T via its constructor when adding to the list.

I'm getting a compile error: The error message is:

'T': cannot provide arguments when creating an instance of a variable

But my classes do have a constructor argument! How can I make this work?

public static string GetAllItems<T>(...) where T : new()
{
   ...
   List<T> tabListItems = new List<T>();
   foreach (ListItem listItem in listCollection) 
   {
       tabListItems.Add(new T(listItem)); // error here.
   } 
   ...
}

Answer 1

I found that I was getting an error "cannot provide arguments when creating an instance of type parameter T" so I needed to do this:

var x = Activator.CreateInstance(typeof(T), args) as T;