protected void btnsave_Click(object sender, EventArgs e)
    {
        GadgetitemsEntities db = new GadgetitemsEntities();

        Tb_login objuser = new Tb_login();

        try
        {
            if (db.Tb_login.Where(z => z.Username == txtusername.Text && z.Password == txtpass.Text && z.UserType == "Admin").Count() > 0)
            {
                objuser = db.Tb_login.Where(z => z.Username == txtusername.Text && z.Password == txtpass.Text && z.UserType == "Admin").FirstOrDefault();
                Response.Cookies["UserName"].Value = objuser.Username;
                Response.Cookies["Usertype"].Value = objuser.UserType;

                FormsAuthentication.RedirectFromLoginPage(txtusername.Text, false);
                Response.Redirect("~/Admin/Default.aspx");
                Response.Cookies["UserName"].Value = objuser.Username;
            }
            else
            {
                Response.Redirect("~/Adminlogin.aspx?msg=" + "error");
                Clear();
            }
        }
        catch (Exception ex)
        {
        }
    }