How to pass an Integer value with button_click eventhandeler

Question

I have a dynamic button btnQuestionNum and a integer i,

btnQuestionNum= new Button();
btnQuestionNum.Text = Convert.ToString(i + 1);
btnQuestionNum.ID = i.ToString();
btnQuestionNum.Click += new EventHandler(btnDynamic); placeholder.Controls.Add(btnQuestionNum);

I want to pass the value of i when button btnQuestionNum is clicked.