用法为新建一个空页面,清除掉页面上的HTML;然后复制一下代码到页面中
用法
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->1 protected void Page_Load(object sender, EventArgs e)
        {
            string randomcode = CreateRandomCode(4);
            Session["Code"] = randomcode;
            //v.CreateValidateGraphic(Page, Session["Code"].ToString());
            this.CreateImage(randomcode);
        }
原文:http://www.cnblogs.com/tianxuan/p/4733413.html