Create DropDownList Dynamically

Panel pnlDropDownList;

protected void Page_PreInit(object sender, EventArgs e)

{

    //Create a Dynamic Panel

    pnlDropDownList = new Panel();

    pnlDropDownList.ID = "pnlDropDownList";

    pnlDropDownList.BorderWidth = 1;

    pnlDropDownList.Width = 300;

    this.form1.Controls.Add(pnlDropDownList);

    //Create a LinkDynamic Button to Add TextBoxes

    LinkButton btnAddDdl = new LinkButton();

    btnAddDdl.ID = "btnAddDdl";

    btnAddDdl.Text = "Add DropDownList";

    btnAddDdl.Click += new System.EventHandler(btnAdd_Click);

    this.form1.Controls.Add(btnAddDdl);

    //Recreate Controls

    RecreateControls("ddlDynamic", "DropDownList");