LINQ in Action - THE LINQ book

Linq mempermudah developer dalam pengembangan sostware.terima kasih

Is the code runnable also? or is just a serie of code examples? for ex in the chapter 6-8 it tells me that I can't run a class application

Everything should compile and run fine. I double-checked, and everything runs fine for me. Did you set the Chapter06to08 project as the startup project? Maybe that this is not the default startup project. It could be that a class library project (Common or ObjectDumper) is selected as the startup project by default.

Yes, everything works now! It wasn't the default startup project like you said... thx

Thanks! :D

I wonder how can I find the dll reference for ObjectDumper Class shown in this Book's examples.

ObjectDumper is provided by Microsoft in the samples included with Visual Studio 2008. We also include the source code for this class in the download you can find on this page.

Can I get an electronic copy of table 3.2? I want to present this to my team. THanks

csdk, see here : http://msdn2.microsoft.com/en-us/library/bb882642.aspx

I am getting errors while trying to attach the “lia.mdf” and “nothwind.mdf” databases provided in the download to SQL Express 2008. Perhaps I am doing something wrong but if this error is expected because the databases are meant to work under sql server 2005 and not under 2008 then it would be nice if the download also included databases compatible with 2008 for those of us using this sql server version. Thank you.

Rene, The databases have been created with SQL Server 2005, but you should be able to attach them to SQL Express 2008. I'm not able to test this at the moment. I'll try tomorrow. What errors do you get? Fabrice

Dang it, I knew I should have fully experimented with the issue regarding attaching the databases before posting. Anyway, the databases do attach to SQL server 2008 just fine. My problem was that I was copying the database files to the default folder where SQL 2008 stores the database files (C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA) and then trying to attach them from there and I was getting errors. Then I tried attaching the databases from a folder when I had full permissions and thing worked ok. Not sure why they database files won’t attach if they are located in the SQL server default folder but I bet it has something to do with permissions. The error message that you get just says that there was an error and to click at some nonexistent link for more information. I guess I shouldn’t be attaching the database files from the SQL server default database folders anyway because that is probably a bad practice but regardless off…. That was the cause of the problem. Sorry and thanks for the quick response.

Thank you for explaining what you were doing. It may help someone in the same situation. One more example of a useless SQL Server error message...

I am not able to download the file. Please check it and repair it. thank you

What kind of error do you get? The download works fine here.

What a good book. I am struggling using linq on an oracle database. I am using strongly typed datasets. How do u insert, update a strong typed dataset. Thanks

LINQ to DataSet is covered in chapter 14, which is available as a free PDF from http://manning.com/marguerie However, inserting into and updating a DataSet is out of the scope of this book because this is basic .NET and it is not related to LINQ.

Thanks. But i am not sure if i am right to say according to your answer i cant avoid using adapters for inserting and updating. ie calling adapter.Update(). Secondly, i was looking at your chapter 14 sample code FillDataSetUsingLinqToSql1(LinqBooksDataSet dataSet). Why doesnt the query return a datatable? Wouldnt it have been easy that way since your iterator variable automatically becomes a datarow. I tried with Northwind database. With the product table it gives an error on categoryID though i did it exactly the same way you did dataSet.Book.AddBookRow(book.ID, book.Title, book.Subject, dataSet.Publisher.FindByID(book.Publisher).... Any help.

Zishumba, please ask your questions in the book's forum. It will be easier to follow up, and everybody will be able to see your questions and help you. Please provide there code samples of what you're trying to do. Please, also include the details about the errors you get, otherwise we won't be able to help you. Thanks The forum is at http://www.manning-sandbox.com/forum.jspa?forumID=302

can any one help to extract the source code as i can't extract the files it shows message box saying "Please insert the last dist of the Multi-Volume set and click ok to continue."

Zola, what are you using to extract the files? It works with WinZip and WinRar for me.

I'm using WinZip

Be sure to check out LINQPad f you have not yet done so. It is a great tool for playing with LINQ and beyond. The LINQ in Action samples can now be loaded directly in the LinqPad samples window. COOL!

Its good for begginer i will create mind to work with linq thanks