LINQ to SQL (fka DLinq): What's new in Orcas beta2

[Visual Studio] Les nouveautés de la Beta 2 de Visual Studio 2008 et du Framework .NET 3.5 Beta 2 !

Thomas Lebrun — Fri, 27 Jul 2007 10:58:03 GMT

La Beta 2 de Visual Studio 2008 est arrivée très récemment et avec elle, on retrouve pas mal de petites

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Pop Catalin — Fri, 27 Jul 2007 14:39:30 GMT

... guess I never imagined me saying that before but this Linq stuff is the most exciting stuff i've seen in years (alongside with Silverlight)

LINQ to Sql changes from Beta 1 to Beta 2

Wooley's Wonderings — Mon, 30 Jul 2007 04:22:33 GMT

I've been working this weekend trying to get my samples for the upcoming Linq In Action book and other...

LINQ to Sql changes from Beta 1 to Beta 2

Wooley's LINQ Wonderings — Mon, 30 Jul 2007 17:29:38 GMT

I've been working this weekend trying to get my samples for the upcoming Linq In Action book and other

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Roger Jennings — Tue, 31 Jul 2007 01:56:34 GMT

Here's an anthology of VS 2008 Beta 2's changes to LINQ and its domain-specific implementations, which includes a brief description and link to this post: http://oakleafblog.blogspot.com/2007/07/linq-changes-from-orcas-beta-1-to-vs.html

--rj

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Roger Jennings — Tue, 31 Jul 2007 02:39:26 GMT

Dinesh,

I believe you were parsing "support" like Attorey General Gozales parses "Did the president tell you ... ?" when you said "SQL Server Compact (fka SQL CE) support" in your list.

A better statement might have been "SQLMetal.exe (not LINQ to SQL Designer) support for SSCE" when you consider your post in post tp the LINQ Project General's Sql Server CE and linq (Beta 2) thread quoted here: http://oakleafblog.blogspot.com/2007/07/linq-to-sql-to-support-sql-server.html

--rj

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Dinesh.Kulkarni — Tue, 31 Jul 2007 09:03:05 GMT

OK Roger. That definitely got my attention. Just to give you a sense of where I am coming from, as the Program Manager responsible for the LINQ to SQL runtime and SqlMetal, I tend to often have a smaller world view while writing informal things like blogs. Our partner team does the designer so I tend to leave the juicy details (features and missing features) to members of that team.

But anyway, your basic objection is fair and I have clarified above.

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Alexey Lavnikov — Wed, 01 Aug 2007 17:18:35 GMT

SqlMetal generator is little buggy...

When I want to generate .cs file from my SqlServerCe .sdf password-protected file, it breaks with error "username required" error.

When I specify username - SqlServerCe provider complains about unknown "username" parameter in connection string.

The only possible solution is to provide connection string. However is this case, generated source code is not compilable, because of invalid ProviderAttribute attribute, generated on DataContext class...

Just FYI

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Nagarajan — Wed, 08 Aug 2007 07:12:59 GMT

Hi Dinesh,

I am excited about LINQ to SQL and exploring it. I like to know that how it can be used project like – WPF smart client application handling over 3500 user. If I use web service for database manipulation then I will lose lot of LINQ to SQL features. I could understand that it is great for Web-based Asp.Net application. But I want to know how to use it on smart client when the users are more. Is there any thing like LINQ to RemoteDB coming the near future?

Regards,

Nagarajan.

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Dinesh.Kulkarni — Wed, 08 Aug 2007 10:35:39 GMT

Hello Nagarajan,

I am not sure if you are talking about a 3-tier system where you want to ferry the data from mid-tier to presentation-tier or something else here (2-tier, ...). I am not following the term "LINQ to RemoteDB" since the database doesn't need to be "local" in LINQ to SQL.

If you are talking about classic 3-tier smart client model, you could serialize the objects from mid-tier through a web service. We are putting together a sample to show how the objects could be roundtripped between tiers.

Thanks,

Dinesh

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Dinesh.Kulkarni — Wed, 08 Aug 2007 10:39:52 GMT

Alexey,

We will look into this again. If you have a few cycles and could share more details over email, that would be helpful.

Thanks,

Dinesh

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Nagarajan — Thu, 09 Aug 2007 08:01:34 GMT

Hello Dinesh,

Thank you very much for your reply. I am so sorry about my unclear question. My understanding was, for example, If I want to take advantages of features in DataContext (Track changes, SubmitChanges () and etc.), I should use 2-tier system. I do not know whether I am correct or not and what I asked was LINQ to SQL (by Web service with all the features). If it is possible even 3-tier smart client model, I will be very happy to know. We are having over 250 small and medium web-based (MIS) applications (Intranet) in our organization. I am trying to convert all into a single smart client application, but the number of user for this application may be over 3500. please advice me on how I can use LINQ to SQL for this scenario and point me the samples links.

Regards,

Nagarajan

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

JP — Sat, 11 Aug 2007 21:23:40 GMT

I could not find a way to add custom attributes to the model's properties in the OR designer in Beta 2.

Will this be available in the final release?

Community Convergence XXIX

Charlie Calvert's Community Blog — Mon, 13 Aug 2007 21:31:36 GMT

There are several good new blogs from members of the Microsoft C# team. Nevertheless, the most important

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Dinesh.Kulkarni — Fri, 31 Aug 2007 09:21:20 GMT

JP,

Unfortunately, we were not able to fit that feature (custom attributes) in V1 of designer.

Thanks,

Dinesh

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Dinesh.Kulkarni — Fri, 31 Aug 2007 09:25:09 GMT

Hello Nagarajan,

Currently 3-tier, smart client systems are easiest to build with LINQ to SQL if you follow some of standard SOA guidelines and use web services appropriately. If the interaction between presentation and mid-tier is of fine granularity (i.e. task-specific, small amount of data exchanged), then it is quite reasonable to use LINQ to SQL Attach() API on the mid-tier.

If you have timestamps in your schema, it gets even easier since the update/insert/delete related services don't have to take original copy of the object for optimistic concurrency. I am working with our documentation team members to get a section of multi-tier applications in the final product documentation.

HTH

Dinesh

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Christopher Smith — Mon, 24 Sep 2007 19:11:04 GMT

Alexey,

I rec'd an error like "user is required if password is specified" and ended up putting a null /user:'' parameter on the SqlMetal command line:

SqlMetal test.sdf /user:'' password='test' /code:test.cs

Chris

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Constantinos — Tue, 25 Sep 2007 22:23:45 GMT

Nice!

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Aineias — Wed, 26 Sep 2007 03:35:26 GMT

Nice

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Ivan — Wed, 26 Sep 2007 04:07:47 GMT

Nice

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Tataki — Thu, 27 Sep 2007 03:44:02 GMT

Cool!

re: LINQ to SQL (fka DLinq): What's new in Orcas beta2

Alexios — Thu, 27 Sep 2007 14:42:54 GMT

Cool...