處理LINQ/HttpContext.Application＆WebServices

我有以下函數+代碼來解析和查詢Web服務請求，然後理論上將結果存儲在應用程序中（因爲它只需要每天刷新一次，幸運的是當應用程序刷新）。處理LINQ/HttpContext.Application＆WebServices

//tocommondata is a reference to the common stuff in the webservice 
var dCountries = toCommonData.PropertyCountries; //KeyValuePair 
var dRegions = toCommonData.Regions;//Array 
var dAreas = toCommonData.Areas;//Array 


var commonDAT = (from c in dCountries 
       join r in dRegions on c.Key equals r.CountryCode 
       join a in dAreas on r.Id equals a.RegionId 
       join p in dResorts on a.Id equals p.AreaId 
       select new CommonSave 
       { 
        Key = c.Key, 
        Value = c.Value, 
        Id = r.Id, 
        Name = r.Name, 
        dAreasID = a.Id, 
        dAreasName = a.Name, 
       } 
       ).ToList().AsQueryable(); 


HttpContext.Current.Application["commonDAT"] = commonDAT;

該位工作正常

foreach (var item in commonDAT) 
{ 
    Response.Write(item.value); 

}

**理想我想，然後將其拉出appmemory，所以我就可以訪問這些數據，這是我已經試過各種（可能是愚蠢的）方法來使用這些信息。剛拉出來是造成我的問題：O（**

//This Seems to kinda work for at least grabbing it (I'm probably doing this REALLY wrong). 
IQueryable appCommonRar = (IQueryable)HttpContext.Current.Application["commonDAT"];

答案標記（刪除.AsQueryable（）） 簡單的例子

只是爲了使這是一個詳細的答案，一種快速重新查詢和顯示結果集的方法...

List<CommonSave> appcommon = (List<CommonSave>)HttpContext.Current.Application["commonDAT"]; 

Response.Write(appcommon.Count()); // Number of responses 

var texst = (from xs in appcommon 
      where xs.Key == "GBR" 
      select xs.dAreasName 
      ); 

foreach (var item in texst) 
{ 
    Response.Write("<br><b>"+item.ToString()+"<b><br>"); 
}

希望對某人有用。

來源

2009-07-16 Chris McKee

如果你打算多次查詢它，那麼爲什麼不把它作爲一個列表呢？該類型將是List<CommonSave>。

來源

2009-07-16 10:44:23

列表 appcommon =（列表）HttpContext.Current.Application [「commonRAR」]; - 將呈現比失敗 - 無法將類型爲'System.Linq.EnumerableQuery`1 [WebServiceTEST.CommonSave]'的對象轉換爲鍵入'System.Collections.Generic.List`1 [WebServiceTEST.CommonSave]' 。 - – 2009-07-16 11:02:23

處理LINQ/HttpContext.Application＆WebServices

回答

相關問題