linq中的错误“查询包含对不同数据上下文中项目的引用".

问题描述

我正在使用两个数据上下文并检索值，但出现以下错误查询包含对不同数据上下文中项目的引用"

I am using two data context and retrieving values i get the following error "the query contains reference to items in a different data context"

dbWebEnrollDataContext dt1 = new dbWebEnrollDataContext();
CommissionsV2DataContext cv1 = new CommissionsV2DataContext();

var getdat=from o in dt.Trade
           join c in cv1.tradevalue on o.id equal c.id 
           select new {o.firstvalue,c.secondvalue};

推荐答案

[Table(Name = "Storedata.dbo.Demo")]
   public partial class Demo : INotifyPropertyChanging, INotifyPropertyChanged

dt.Trade

来自一个数据上下文

comes from one data context

cv1.tradevalue

来自另一个

因此，您需要创建一个包含两个表的数据上下文.然后，您应该能够实现所追求的目标.

comes from another

So you need to create one data context that includes both tables. You should then be able to achieve what you are after.

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