List.add replacing the all old values with new value

Question

account_Entites = new account_entites();

dynamic userdetails = JValue.Parse( response.Content.ReadAsStringAsync().Result);

dynamic values = JValue.Parse(userdetails.value.ToString());

foreach(var user in values)

{

if (user.preetham_registrationnumber!= null)

{

account_Entites.preetham_registrationnumber =user.preetham_registrationnumber;

account_Entites.name = user.name;

data_list.Add(account_Entites);   // here for second iteration its replacing old value new value

}

}

}

return data_list;

 

can anybody help me