blocks|key|458065|text|L2S与紧凑的框架一起工作得很好。但是，您不能使用拖放设计器。您需要自己运行SQLMetal.exe来为您生成类。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|458066|SQLMetal.exe：http://msdn.microsoft.com/en-us/library/bb386987.aspx|offset|length|style|BOLD|458067|使用罗斯文紧凑的示例：http://blogs.msdn.com/sqlservercompact/archive/2007/08/21/linq-with-sql-server-compact-a-ka-dlinq-over-sql-ce.aspx|458068|另一个例子，有很多图片：http://pietschsoft.com/post/2009/01/Using-LINQ-to-SQL-with-SQL-Server-Compact-Edition.aspx|458069|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/bb386987.aspx|1|http://blogs.msdn.com/sqlservercompact/archive/2007/08/21/linq-with-sql-server-compact-a-ka-dlinq-over-sql-ce.aspx|2|http://pietschsoft.com/post/2009/01/Using-LINQ-to-SQL-with-SQL-Server-Compact-Edition.aspx^0|0|0|C|D|1H|0|0|8|39|B|36|1|0|0|2U|C|2I|2|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@$D|Z|E|10|F|G]]|9|@$D|11|E|12|1|13]]|A|$]]|$1|H|3|I|5|6|7|14|8|@$D|15|E|16|F|G]]|9|@$D|17|E|18|1|19]]|A|$]]|$1|J|3|K|5|6|7|1A|8|@$D|1B|E|1C|F|G]]|9|@$D|1D|E|1E|1|1F]]|A|$]]|$1|L|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]|T|$5|O|P|Q|A|$R|U]]|V|$5|O|P|Q|A|$R|W]]]]

L2S works great with the compact framework. You can't use the drag-and-drop designer, though. You'll need to run SQLMetal.exe yourself to generate the classes for you.

SQLMetal.exe: <a href="http://msdn.microsoft.com/en-us/library/bb386987.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/bb386987.aspx</a>

Example with Northwind compact: <a href="http://blogs.msdn.com/sqlservercompact/archive/2007/08/21/linq-with-sql-server-compact-a-ka-dlinq-over-sql-ce.aspx" rel="nofollow noreferrer">http://blogs.msdn.com/sqlservercompact/archive/2007/08/21/linq-with-sql-server-compact-a-ka-dlinq-over-sql-ce.aspx</a>

Another example, with lots of pictures: <a href="http://pietschsoft.com/post/2009/01/Using-LINQ-to-SQL-with-SQL-Server-Compact-Edition.aspx" rel="nofollow noreferrer">http://pietschsoft.com/post/2009/01/Using-LINQ-to-SQL-with-SQL-Server-Compact-Edition.aspx</a>

blocks|key|829880|text|您可以在紧凑框架上使用DevExpress持久对象(XPO)。我以前使用过它，但发现它对我的目的(数据收集应用程序)来说有点慢。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|829881|在紧凑框架中找不到这些的原因是，速度对设备应用程序通常非常重要，数据访问代码通常是手动完成的。|829882|我不知道您是否可以使用XPO从现有的数据库创建对象。|829883|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

You could use DevExpress persistent objects (XPO) on compact framework. I have used it before but found it to be somewhat slow for my purpose (data collection application).

The reason that you cannot find much of this on the compact framework is that speed is usually so important for device apps, that data access code is usually done manually.

I don't know if you can create objects from an already existing database with XPO.

blocks|key|458136|text|我已经能够修改SubSonic+3.0，在添加了缺少的Queryable源代码之后，修改了Mono项目中的System.Linq.Expressions的db4o/Mainsoft端口，并在Codeplex上修改了Matt+Warren的IQToolkit，以便在CF上提供L2S等效项。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|458137|这就是它所需要的，因为在.Net+CF3.5上不支持Linq表达式树。|458138|我能够使用从IQToolkit导入到Subsonic的DbEntityProvider/DbEntitySession和AttributeMapping/XMLMapping来提供更好的实体和表类映射支持。|458139|entityMap|0|LINK|mutability|MUTABLE|url|http://www.subsonicproject.com/|1|http://anonsvn.mono-project.com/source/trunk/mcs/class/System.Core/System.Linq/|2|http://developer.db4o.com/blogs/product_news/archive/2008/09/24/linq-for-the-compact-framework-3-5.aspx|3|http://www.codeplex.com/IQToolkit^0|7|C|0|R|9|1|1H|N|2|3B|9|3|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]|$A|Z|B|10|1|11]|$A|12|B|13|1|14]|$A|15|B|16|1|17]]|C|$]]|$1|D|3|E|5|6|7|18|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|19|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]|T|$5|K|L|M|C|$N|U]]]]

I've been able to modify <a href="http://www.subsonicproject.com/" rel="nofollow noreferrer">SubSonic 3.0</a>, the db4o/Mainsoft port of <a href="http://developer.db4o.com/blogs/product_news/archive/2008/09/24/linq-for-the-compact-framework-3-5.aspx" rel="nofollow noreferrer">System.Linq.Expressions</a> from the Mono project after adding the missing <a href="http://anonsvn.mono-project.com/source/trunk/mcs/class/System.Core/System.Linq/" rel="nofollow noreferrer">Queryable</a> sources, and Matt Warren's <a href="http://www.codeplex.com/IQToolkit" rel="nofollow noreferrer">IQToolkit</a> on Codeplex to provide a L2S equivalent on the CF.

This is about what it takes, though, since Linq expression trees are not supported on .Net CF 3.5.

I was able to use the DbEntityProvider/DbEntitySession and AttributeMapping/XMLMapping imported to Subsonic from IQToolkit to provide better entity and table-to-class mapping support.

blocks|key|823746|text|这是从dbml文件生成普通POCO类与LINQ2SQL协同工作的一个很好的选项。还没有测试，但看起来很有希望。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|823747|http://www.codeplex.com/ULinqGen|offset|length|823748|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|W|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

This is one good option generating from dbml file plain POCO classes working with LINQ 2 SQL. Not tested yet but seems promised.

<a href="http://www.codeplex.com/ULinqGen" rel="nofollow noreferrer">http://www.codeplex.com/ULinqGen</a>

blocks|key|4239917|text|您查看过Kea+-+Linq+for+Sql+Compact+&+Compact+Framework吗|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4239918|http://kea.codeplex.com/|offset|length|4239919|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|O|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Have you checked out Kea - Linq for Sql Compact &amp; Compact Framework?

<a href="http://kea.codeplex.com/" rel="nofollow">http://kea.codeplex.com/</a>

Im on to design my Data Access for a new solution i create. That solution though contains Compact Framework Device Application and libraries besides Desktop. All .NET 3.5. Desktop will handle all Data Access basically. I need the Data Objects to have in CF too, Desktop will communicate with SQL and then with Mobile and give the appropriate data...

I love LINQ, and more i love LINQ 2 SQL. There is a lot of hype out there and i don't buy internal Microsoft politics about recommending EF. For now EF is too heavy and too complex for someone to choose it besides it still evolving and EF 4 will have major changes when it comes in a few months. But i cant wait for months to create a project as every developer in here, i want something now! After that said i want to use LINQ 2 SQL, my problem is that i cant just copy the generated dbml and use the generated classes. I don't need the DataContext cause i don't intend to use CRUD or any operations on a database with the Mobile App. i Just want the Objects. Anyone ever came in a situation like this? The whole point is not to write all classes representing the tables by hand. Cause i need them for further LINQ to Objects manipulation.

Basically an ORM supporting CF would do the job! But i don't know any incompatibilities i would meet.

LINQ To SQL in Compact Framework

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在为我创建的新解决方案设计我的数据访问。但是，该解决方案除了桌面之外，还包含紧凑框架、设备应用程序和库。所有.NET 3.5。桌面基本上会处理所有的数据访问。我需要的数据对象在CF中也有，桌面将与SQL通信，然后与移动，并给出适当的数据…我喜欢LINQ，更喜欢LINQ2SQL。有很多炒作，我不相信微软内部关于推荐E...

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