public bool ForgetPass(ForgetPassword input)
 {
     var taikhoan = db.Accounts.FirstOrDefault(x => string.Compare(x.UserName, input.Username) == 0 && string.Compare(x.UserInfo.Email, input.Email) == 0 && !x.DelFlag);
     if (taikhoan == null)
     {
         return false;
     }
     else
     {
         string newPass = FunctionCommon.AutoPassword();
         SendMail.Send(taikhoan.UserInfo.Email, newPass, "[DUTAdmissionSystem] Forget Password");
         taikhoan.Password = FunctionCommon.GetMd5(FunctionCommon.GetSimpleMd5(newPass));
         db.SaveChanges();
         return true;
     }
 }