成长的足迹.NET

我的.NET成长之路

 

07 2009 档案

LINQ to Entities 实现sql 关键字"In"方式总结
摘要: 在LINQ to Entities中没有办法再像 LINQ to SQL 中一样使用 Contains 的方法来实现sql "in" 关键字 下面代码在 LINQ to SQL 中可行 在LINQ to Entities却无法运行:[代码]替代方法1:使用方法Any[代码]使用方法Any替换法搞了好久都没法实现直接对数组Any,下列代码仍无法执行:[代码]于是继续Goolge寻找第二种方法,在MS...阅读全文

posted @ 2009-07-20 17:08 ejiyuan 阅读(4160) | 评论 (27) 编辑

关于LinQ的动态Or查询
摘要: [代码]调用方法:[代码]阅读全文

posted @ 2009-07-14 17:11 ejiyuan 阅读(267) | 评论 (0) 编辑

Ado.Net Entity : Object doesn’t display linked members (foreign keys)
摘要: I have a simple databasescheme: User, Account. User has 1-to-many relationship with Account.I have generated a ado.net entity data model, and I can create users and accounts, and even link them togeth...阅读全文

posted @ 2009-07-08 14:47 ejiyuan 阅读(78) | 评论 (0) 编辑

How do I write a LINQ to Entities query which has the equivalent of the SQL “in” keyword?
摘要: In SQL, you might write a query that looks something like this: SELECT * FROM Foo WHERE blah IN (1, 3, 5, 7). With LINQ to Entities you might have a similar scenario except that you are selecting from...阅读全文

posted @ 2009-07-07 10:18 ejiyuan 阅读(143) | 评论 (1) 编辑

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