大家好，这个http://www.sdzbw.com是我的网站，经常被注册机注入大量的垃圾信息
注册代码如下：
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        if (GetResult() == true)
        {
            try
            {
                SearchUser();
                if (nuser == "0")
                {
                    liu.Model.HN_Users mob = new liu.Model.HN_Users();
                    liu.BLL.HN_Users bll = new liu.BLL.HN_Users();
                    mob.username = TextBox1.Value.Trim();
                    mob.userpwd = pwds.Value.Trim();
                    mob.userrole = "1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20";
                    mob.votecount = 0;
                    mob.ndate = DateTime.Now;
                    mob.role = 0;
                    mob.show = 0;
                    mob.userclass = RadioButtonList1.SelectedValue.Trim();
                    mob.ydate = DateTime.Now;
                    mob.problem = "";
                    mob.answer = "";
                    mob.chengxin = 0;
                    mob.company = company.Value.Trim();
                    mob.companyclass = "";
                    mob.hangye = "";
                    mob.realname = name.Value.Trim();
                    mob.phones = phone.Value.Trim();
                    mob.mobphone = mobphone.Value.Trim();
                    mob.chuanzhen = "";
                    mob.email = email.Value.Trim();
                    mob.companyadr = address.Value.Trim();
                    mob.userdate = 1;
                    if (Session["Code"] != null || Session["Code"].ToString() != "")
                    {
                        if (Session["Code"].ToString().ToLower() != this.answerText.Value.ToLower())
                        {
                            this.lblAnser.Text = "问题回答错误";
                            this.answerText.Value = "";
                            Session["Code"] = null;
                            return;
                        }
                        else
                        {
                            this.lblAnser.Text = "";
                            Session["Code"] = null;
                        }
                    }
                    else
                    {
                        return;
                    }
                    if (Session["vvcc"] != null || Session["vvcc"].ToString() != "")
                    {
                        if (Session["vvcc"].ToString().ToLower() == this.valideText.Value.ToLower().Trim())
                        {
                            this.Label1.Text = "";
                            Session["vvcc"] = null;
                            this.valideText.Value = "";

                        }
                        else
                        {
                            this.Label1.Text = "验证码输入错误";
                            Session["vvcc"] = null;
                            this.valideText.Value = "";
                            return;
                        }
                    }
                    else
                    {
                        this.Label1.Text = "验证码过期,请重新输入";
                        return;
                    }
                    int s = bll.Add(mob);
                           }