protected void btConfirm_Click(object sender, EventArgs e)
    {
        Admin admin = new Admin ();
        Search search = new Search();

        TeacherInfo thisTeacher = new TeacherInfo();
        thisTeacher.StrUserName=tbxUserName.Text;
        thisTeacher.StrTeacherName=tbxName.Text;
        thisTeacher.StrIdentityId=tbxIdentityNO.Text;

        MD5CryptoServiceProvider HashMD5 = new MD5CryptoServiceProvider();
        thisTeacher.StrPassword=ASCIIEncoding.ASCII.GetString(HashMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes("888888")));

        string s = tbxUserName.Text;
        string last4userName = s.Substring(s.Length - 4, 4);
        string p = tbxIdentityNO.Text;
        string last4IdentityNO = p.Substring(p.Length - 4, 4);
        if (last4userName!=last4IdentityNO)
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
                "<script>alert('请确认用户名末四位与身份证号末四位相同')</script>");
        }
        //else if (thisTeacher.StrIdentityId==search.GetTeacherByUsername(s).StrIdentityId)
        else if (thisTeacher.StrIdentityId == search.GetTeacherByIdentityID(p).StrIdentityId)// 武剑洁修改,2009-9-11
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
               "<script>alert('身份证号重复,已存在该老师')</script>");
            tbxIdentityNO.Text = "";
        }
        else if (search.GetTeacherIdByUsername(thisTeacher.StrUserName) > 0)// 尚书修改,2012-8-5
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
               "<script>alert('该用户名已存在,请更换')</script>");
            tbxUserName.Text = "";
        }
        else if (search.GetTeacherIdByName(thisTeacher.StrTeacherName) > 0)// 武剑洁修改,2012-8-5
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
               "<script>alert('老师姓名重复,请修改姓名以区分两位老师')</script>");
            tbxName.Text = "";
        }
        else
        {
            if (admin.AddTeacher(thisTeacher))
            {
                //Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
                //    "<script>alert('添加成功!')</script>");
                // 武剑洁修改,添加页面跳转,2009-9-10
                Response.Write("<script>alert('添加成功!');window.location='./Teacher_Manage.aspx'</script>");
            }
            else
            {
                //Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
                //    "<script>alert('添加失败!')</script>");
                // 武剑洁修改,添加页面跳转,2009-9-10
                Response.Write("<script>alert('添加失败!');window.location='./Teacher_Manage.aspx'</script>");
            }
        }
    }