Create a Controls in Array List in C#.net

An Arraylist is only a collection of objects.
It is not a Control.

You can store anything you want in a arraylist

var arrayList1 = new ArrayList();
arrayList1.Add("a string"); // a string
arrayList1.Add(2); // a number
arrayList1.Add(new Object()); // an object

You can also add controls

arrayList1.Add(new Button());
arrayList1.Add(new Textbox());

This won't show your objects, you only use the Arraylist to store them for later use in a convenient way.

Just create an ArrayList and the add controls to it.

ArrayList<control> controls = new ArrayList<control>();

controls.Add(new TextBox());
controls.Add(new ListBox());
controls.Add(new Label());