Contents tagged with LINQ .NET Visual Studio
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LINQ in Multi-tier Applications
If you had the chance to work with LINQ, the latest Object Relational Mapping tool (ORM) added to the .NET 3.5 platform, then you understand how LINQ maps your database structure into several classes in your application. It creates for each table an entity class that has its properties mapped to the columns of the table in context. The whole point of ORM tools is to bring the database structure up to the language’s level so that your code would be aware of the structure at compile time. Nowadays developers tend to divide their application’s architecture into several distinct layers, usually 3 layers:
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[Book review] LINQ in Action
This book is the fruit of a collaborative work. In a time of globalization, where ideas know no frontiers, this is a refreshing take on a hot topic like LINQ. -
LINQPad
LINQPad lets you interactively query SQL databases in a modern query language: LINQ. Kiss goodbye to SQL Management Studio!
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[Book Review] Pro LINQ: Language Integrated Query in C# 2008
LINQ is latest interesting tool to come from Microsoft, along with Silverlight, WPF and the Ajax toolkit. One of difficulties about these new technologies is that there is not enough documentation readily available. This book is the first one that has really captured my attention, maybe because it's the first one on the subject. Apress books are always a great buy, however in this instance, I reviewed the eBook version, which I have to say is not the easiest to navigate. I might be a cutting edge developer but I am also an old fashion type of guy, I like the feel and smell of new books! Anyway back to the subject, LINQ. I think we can all say we are newbies on the subject except for those who are familiar with ORM (Object Relation Mapping) technology. LINQ implementation is quite different than the other ORM tools and can be surprising in some ways sometimes for beginners. The author here has taken the broad option of covering LINQ for both beginners and professionals. It something I like a lot because it avoids the need for two books on the same subject, which often can mean you never quite find the right piece of code you are looking for. Kudos to the author who admits that this is his first book; I think he should continue writing. I would have no problem recommending another book by the same author .
The introduction is a well written exercise, where the writer gets the reader's attention using some clever basic 'hello' messages coded with LINQ before he delves into a deeper understanding of the language. The style is straightforward, taking an honest approach. You won't find any pompous statements in the book saying something like 'I know what I am talking about, I was born with LINQ!', but instead you find a more frank admission that the author has also learned by writing on the subject himself. I am looking forward now to a VB version of the book, because this is the only negative comment I can make. It would have been easy to write the examples in VB and C# in the same book. I can code in both, but I know you have subtle differences. LINQ is not only for database gurus, and I like the fact that in the book the LINQ to SQL has been pushed further down the content list. What is also good is that because the book is well structured you can jump directly to any section. I would have added more diagrams and graphics to the text to lighten what is a heavy read. Another little thing but useful for the beginners would have been to have some explanations on using the LINQ designer class in Visual Studio 2008, which is quite absent as far as I could see.
Now I do hope that my review will encourage you to buy this book because not only is it the first one on the subject, but because it covers almost everything you need to know on the subject. -
GridView Edit, Update, Delete, Paging, Sorting Using LINQ
Microsoft LINQ is part of the .NET 3.5 framework. LINQ allows the developer to iterate through data sources which includes SQL SERVER databases. In this article AzamSharp will demonstrate how you can use LINQ to perform editing, updating, paging, sorting and deleting operations on the GridView control.
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LINQ to Flickr, another IQueriable implementation
Interesting example about implementing a LINQ extension to Flickr, so you can query for photos by tags, creation date, user id or title.
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LINQ Changes from Orcas Beta 1 to VS 2008 Beta 2
There's a substantial amount of blogging going on about new features and changes to LINQ to Objects and its domain-specific versions in Visual Studio 2008 Beta 2. This post is intended as a central anthology of changes between the two betas with links to the original sources.