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是否可以執行一個查詢以檢索具有該模式的多個數據庫值?Linq to SQL選擇新模式
我有一個視圖模型調用:FreemimumViewModel。內部視圖模型我有:
public class FreemiumViewModel
{
public FreemiumViewModel()
{
Skus = new HashSet<StockKeepingUnit>();
Features = new HashSet<Feature>();
RowValues = new Dictionary<string, object>();
ColumnTitles = new List<string>();
CanUsePromoCode = true;
SelectionMatrix = new HashSet<FeatureStockKeepingUnitViewModel>();
}
public ICollection<Feature> Features { get; set; }
public ICollection<StockKeepingUnit> Skus { get; set; }
public ICollection<FeatureStockKeepingUnitViewModel> SelectionMatrix { get; set; }
public UserProfile UserProfile { get; set; }
public UserSubscriptionViewModel UserSubscriptionViewModel { get; set; }
public bool CanUsePromoCode { get; set; }
public string PromotionalCode { get; set; }
/// <summary>
/// StockKeepingUnit name
/// </summary>
public List<string> ColumnTitles { get; set; }
/// <summary>
/// Key is the feature row title and object is the stock column value.
/// </summary>
public Dictionary<string, object> RowValues { get; set; }
}
現在我想收集與語法的所有數據庫的信息:
var vModel = (from skus in Context.Instance.StockKeepingUnits
from features in Context.Instance.Features
...
select new FreemiumViewModel()
{
Skus = skus, // Need to be ICollection
Features = features // Need to be ICollection
...
}).SingleOrDefault();
我嘗試做一個請求到數據庫,而不是多,但我沒有我的skus和功能的集合。你可以幫我嗎?
對於您的視圖模型集合,它看起來像你正試圖加載每個從數據庫中收藏的全部,不應用任何過濾器。這是你想要做的嗎? – devduder
是的,這是我需要的。 – Karine