protected void rsubmit_Click(object sender, EventArgs e)
    {
        li.state_id = Convert.ToInt16(dstate.SelectedValue);
        li.fname    = fname.Text;
        li.lname    = lname.Text;
        li.email    = email.Text;
        li.uname    = uname.Text;
        li.pass     = password.Text;
        li.address  = address.Text;
        li.dcity    = dcity.SelectedItem.Text;
        li.mob_no   = mob_no.Text;
        li.pc       = Convert.ToInt32(pc.Text);


        li.Reg_User(li);
        Response.Redirect("signin.aspx");
    }