/* 贪婪加载导航属性 */
public static void QueryWithNavigation()
{
/* context filter */
context.HasQueryFilter <User>(a => a.Id > -100);
context.HasQueryFilter <City>(a => a.Id > -200);
context.HasQueryFilter <Province>(a => a.Id > -300);
object result = null;
result = context.Query <User>().Include(a => a.City).ThenInclude(a => a.Province).ToList();
result = context.Query <User>().IgnoreAllFilters().Include(a => a.City).ThenInclude(a => a.Province).ToList();
result = context.Query <City>().Include(a => a.Province).IncludeMany(a => a.Users).AndWhere(a => a.Age >= 18).ToList();
result = context.Query <Province>().IncludeMany(a => a.Cities).ThenIncludeMany(a => a.Users).ToList();
result = context.Query <Province>().IncludeMany(a => a.Cities).ThenIncludeMany(a => a.Users).Where(a => a.Id > 0).TakePage(1, 20).ToList();
result = context.Query <City>().IncludeMany(a => a.Users).AndWhere(a => a.Age > 18).ToList();
ConsoleHelper.WriteLineAndReadKey();
}