public DataTable GetSmslogs(string list_code, string area_code, string user, string from, string end)
{
int listid = int.Parse(list_code);
int area_id = int.Parse(area_code);
DateTime from_date = ReturnDate(from, 1);
DateTime end_date = ReturnDate(end, 2);
data_table = data_file.GetSmslogs(listid, area_id, user, from_date, end_date);
return(data_table);
}