LINQ的JOIN寫法, 之前常忘記就記錄一下
/// <summary>
/// get後台主視覺Banner列表
/// </summary>
/// <returns></returns>
public IQueryable<MainBannerModel> getMainBannerList()
{
using (StarBackendEntities db = new StarBackendEntities())
{
var resultList = (from kd in db.KIND_DATA
join ps in db.PAGE_SECTION on kd.Page_ID equals ps.PageId
join td in db.TYPE_DATA on kd.TypeID equals td.TypeID
where ps.PageCode == 1 && !kd.Status.Equals(4) && td.Status == 1
select new MainBannerModel()
{
PageURL = ps.PageURL,
PageCode = ps.PageCode,
PageDescription = ps.PageDescription,
TypeID = td.TypeID,
TypeName = td.TypeName,
PhotoPath = kd.PhotoUrl,
PhotoName = kd.PhotoName,
ProductNumber = kd.WritingProductId,
WebUrl = kd.WebUrl,
DispalyWords = kd.DisplayWords,
BannerDescription = kd.BannerDescription,
CreateTime = kd.CreateTime,
Weight = (int)kd.Weight,
OnlineDate = kd.OnlineDate == null ? DateTime.Now : (DateTime)kd.OnlineDate,
OffLineDate = kd.OfflineDate == null ? DateTime.Now : (DateTime)kd.OfflineDate,
Kind_ID = (int)kd.Kind_ID,
Kind_Name = kd.Kind_NAME
}).ToList();
return resultList.AsQueryable();
}
}