How to generate controls dynamically ?

When u select HC Dropdownlist,a dropdownlist will created with the only 1,2,3,4,5 values or More values..specify that one... For Ex: when u select dropdownlist value say fro ex 2: Then u create a function and pass the selected dropdownlist value.. in that function u need to add for loop.. for(int i=0;i<=2;i++) { TextBox txt = new TextBox(); txt.Id=GetId();-->u can generate randonm value here. next u need to add controls to from Page.Form.Controls.Add(txt); u can also add same check boxes.. depending up on the selected value u need to pass.. } }