Derik Whittaker

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Deeper in .Net Live -- Linq internals with VB 9 (oh yea, VB baby)

Author: Scott Wisniewski

The first presentation of the day is 'Linq internals with VB 9'.  The presenter is a Microsofty that made the trek out from Redmond to visit the midwest.  The goal of the presentation is to give a high level overview of Linq, and it was pulled of pretty well.

Here are some of the topics that were covered

  • Showed the 'painful' way of doing data retrieval in .Net 2.0.  Then moved on to show how to accomplish the same task via Linq.
  • Demo'ed how you could override Linq keywords such as Where if you wanted to override the default behavior (hey, I am sure someone will want this).
  • Demo'ed XLinq, this is pretty cool.  Sadly the IDE support is ONLY for VB (damn vb guys).  Us C# devs can still use XLinq, but only via the API, we will get no intellisense.  Here are 2 postings about XLinq Steve Eichert and DonXML.  Actually had a VB developer say to me 'Finally something us VB guys have that you C# do not, we are now a first class citizen' -- Laughed

Ok, this is just my little rant on my VB syntax hates

  • Using the _ as line separators
  • Lack of needing () for methods (confusing anyone)
  • Extension methods are ODD
  • Non-case sensitive
  • Lambda syntax is 'ugly'
    Function (c) c.SomeProperty = "SomeValue"

 

Nice overall theme, but would have liked to see more time spent on Linq it self.  There was a large percentage of time spent 'building' the test application.

Till next time,


Posted 04-05-2008 9:10 AM by Derik Whittaker
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Comments

Don Demsak wrote re: Deeper in .Net Live -- Linq internals with VB 9 (oh yea, VB baby)
on 04-05-2008 12:20 PM

From someone that just did a whole day presentation on LINQ, let me tell you, it is hard to cover the language syntax and a query provider (other than LINQ to Objects) in an hour (or even in an hour and a half).  I spent 8 hours teaching an intro to LINQ pre con workshop, and we barely scratched the surface.

I spent 2 hours just on the languge improvements and the basic extension methods/clauses that make LINQ possible, and I could have spent another 2 hours in demos.

My favorite topic, though, is writing your own query providers.  Well that an how cool LINQ to XML is, especially for the VB guys (and I use to consider myself more of a C# guy).  If you are going to use LINQ to XML, just use VB 9, it is just plan better than using the pure API (and believe me, I was an anti XML Literals and XML Properties guy, but I've grown to love them).

Derik Whittaker wrote Deeper in .Net wrap up
on 04-06-2008 11:20 AM

Wow, yesterday was great. Myself and Jordan Martz make the trek up from Chicago land up to Brookfield

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