Last week - I had the privilege of speaking at Microsoft's SharePoint conference in Las Vegas.  I had a talk about Workflows in SharePoint 2010 - and had a blast at the conference.  Honestly probably the best technical conference I've ever spoke at, certainly the best I've been to in at least 10 years.

I'm super excited about SharePoint 2010, expect more blog posts and other information flowing from this blog RSN.

One thing I am really really excited about it is all the emphasis on REST in SharePoint 2010.  Case in point - as you can read over at the ADO.NET Data Services team blog =  http://blogs.msdn.com/astoriateam/ - SharePoint list data is going to be exposed via ADO.NET Data Services!

Just go to /_vti_bin/ListData.svc/   (note that you may have to install ADO.NET Data Services 1.5 CTP2 if you haven't already  as you'll get 404 - page not found errors if you try to hit the ListData.svc URI without it installed).

Another really cool part of this integration between ADO.NET Data Services and SharePoint 2010 is that document libraries are exposed as well -and documents are exposed as Atom pub media links (a standard way to expose binary data as part of an atom feed).

I was playing around with this today - and wanted to blog about how to use it through the ADO.NET generated client.  The DataServiceContext object you use to connect to your list data has two methods :  GetReadStream, and SetSaveStream.

When you want to retrieve the document from the document library associated with a list item, you pass the list item to GetReadStream:

               1: var
uri = new Uri("http://flash/spc/_vti_bin/ListData.svc");

               2: var
ctx = new TwiddlerDataContext(uri); 

               3: ctx.Credentials
= System.Net.CredentialCache.DefaultCredentials;

               4: var
extf = ctx.FlowTest.FirstOrDefault();

               5: var
stream = ctx.GetReadStream(extf); 

You use SetSaveStream to associate a list item with a stream that will be save as the document.

Movie was just awesome.  Maybe one of the best movies of all time.  Really ever.

If you are in LA for TechEd you have a moral obligation to go see Star Trek - at the Arclight Cinerama Dome Hollywood -http://tinyurl.com/ca3b3o.  The Arclight is really the best theater I've ever been too.  Leather *assigned* seats, no talkers (well almost never any talkers)  great projection and sound in every theater. 

If you are into music - go next door to Ameoba - its an old school record store (and there aren't many of those left).

I'm super excited to be doing two talks at VSLive Vegas on Oslo.  If you register with code  S9V10  you can get and all-access Passport Package for just $1,295, a savings of $400.00 off the standard price of $1,695.

Register now and I'll see you in Vegas!

Thanks Nick - http://techfortesco.blogspot.com/2009/04/tescocom-api-to-become-more-restful.html

I just discovered that in Chapter 11 - my code for generating ETags has a bug.  The code needs to wrap the ETag in a set of quotes:

            string GenerateETag(User
u) { byte[] bytes = Encoding.UTF8.GetBytes(u.UserId
+ u.LastModified.ToString()); byte[] hash = MD5.Create().ComputeHash(bytes); string etag
= Convert.ToBase64String(hash); returnstring.Format("\"{0}\"",
etag); }

Its available now on Codeplex  - I showed off both the client and server pieces of the starter kit at my full-day REST seminar at SDWest this week.   There are some very useful features in the kit like:

• WebProtocolException and an IErrorHandler implementation that returns correct error codes
• The HttpClient class and the "Paste as Xml Serializable" feature to help minimize the work necessary when building RESTful clients

Those are just two of my favorites but there are a lot more.  I'll be using the HttpClient to help do Conditional GET when I do my Caching in REST talk next Friday at Mix!  If you are going to be in Vegas - some by and say hello.