asp.net dynamically button with event handler
You must have to place that code in page_load or page_init event.
protected void Page_Load(){ Button ButtonChange = new Button(); ButtonChange.Text = "Change"; ButtonChange.ID = "change_" + i.ToString(); ButtonChange.Font.Size = FontUnit.Point(7); ButtonChange.ControlStyle.CssClass = "button"; ButtonChange.Click += new EventHandler(test);}Read MSDN article - How to: Add Controls to an ASP.NET Web Page Programmatically?