public ActionResult Index(string loginname, string password)
{
var res = new UsersBLL().SelectWhere(u => u.U_Password == password && u.U_LoginName == loginname && u.U_Role != 3 && u.U_Role != 4);
if (res.Any())
{
Session["user"] = res.FirstOrDefault();
return Content("ok");
}
return Content("erro");
}