处理LINQ/HttpContext.Application＆WebServices

我有以下函数+代码来解析和查询Web服务请求，然后理论上将结果存储在应用程序中（因为它只需要每天刷新一次，幸运的是当应用程序刷新）。处理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;

该位工作正常

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

}

**理想我想，然后将其拉出appmemory，所以我就可以访问这些数据，这是我已经试过各种（可能是愚蠢的）方法来使用这些信息。刚拉出来是造成我的问题：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"];

答案标记（删除.AsQueryable（）） 简单的例子

只是为了使这是一个详细的答案，一种快速重新查询和显示结果集的方法...

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>"); 
}

希望对某人有用。

来源

2009-07-16 Chris McKee

如果你打算多次查询它，那么为什么不把它作为一个列表呢？该类型将是List<CommonSave>。

来源

2009-07-16 10:44:23

列表 appcommon =（列表）HttpContext.Current.Application [“commonRAR”]; - 将呈现比失败 - 无法将类型为'System.Linq.EnumerableQuery`1 [WebServiceTEST.CommonSave]'的对象转换为键入'System.Collections.Generic.List`1 [WebServiceTEST.CommonSave]' 。 - – 2009-07-16 11:02:23

处理LINQ/HttpContext.Application＆WebServices

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