asp.net动态生成HTML表单的方法

public class myHtmlForm:HtmlContainerControl
{
    public myHtmlForm(): base("form")
    {
      this.Attributes.Add("method", "post");
    }
    public string Action
    {
      set
      {
        Attributes.Add("action", value);
      }
    }
}

myHtmlForm form = new myHtmlForm();
form.ID = "myform";
form.Action = "test.aspx";
HtmlInputHidden hidf= new HtmlInputHidden();
hidf.ID = hidf.Name = "hidden";
form.Controls.Add(hidf);

form.RendControl(Writer);