/// <summary>
/// 获得前3个轮播图
/// </summary>
/// <returns></returns>
public async Task <List <SlideDto> > FindListAsync()
{
var slideList = await _slideRepository.FindList(p => p.Sign == 1 && p.Status == 1).OrderBy(p => p.Weight).ThenByDescending(p => p.AddTime).Take(3).ToListAsync();
return(slideList.ToList <SlideDto>());
}