ADO.NET, LINQ, DataSet and other fun .NET technology

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Erick Thompson — Fri, 04 Jul 2008 00:51:00 GMT

Sometimes you run into a bug in DataSet, or some other product. At this point, you have a couple of choices. You can work around the bug, or you can call CSS/PSS. Most people take the former route unless they can't figure out a workaround. When you call...(read more)

Tech Ed

Erick Thompson — Fri, 30 May 2008 19:28:00 GMT

I'm currently down in sunny Orlando, getting ready for Tech Ed (or is it TechEd? That dot between letters is a very odd thing). I'm going to be presenting on LINQ to DataSet, and Understanding the Entity Framework. As usual, I have far too much material...(read more)

LINQ to DataSet - LinqDataView and indexes

Erick Thompson — Mon, 19 May 2008 22:37:00 GMT

Index usage One of the features of the DataView that often gets overlooked is its ability to very quickly find a DataRow (or multiple DataRows) by an index value. The index is built on the sort criteria, so if you sort based on the last name column, the...(read more)

DataSets and nullable types

Erick Thompson — Fri, 16 May 2008 05:14:00 GMT

Let's say you want to have a DataSet with an Integer column, and this column can have no values, which for argument's sake we'll call NULL values (there is a whole argument about NULL really means, but we'll punt on that). The DataSet has been around...(read more)

How'ya doing, where'ya been?

Erick Thompson — Fri, 16 May 2008 03:29:00 GMT

It's been a while - but don't worry, I didn't drop off the face of the planet, or get eaten by huge worms. In the time since my last post, I've taken on some new responsibilities, namely a number of XML technologies, including those that are shipping...(read more)

EnumerableRowCollection Type

Erick Thompson — Wed, 07 Nov 2007 04:40:00 GMT

If you've been playing with LINQ to DataSet, you may have noticed the EnumerableRowCollection type. For example, if you have a query like the following, the type of query is EnumerableRowCollection. var query = from row in ds.Tables[0].AsEnumerable()...(read more)

LINQ to DataSet Data Binding – LinqDataView Restriction Joins

Erick Thompson — Wed, 24 Oct 2007 21:39:00 GMT

LINQ To DataSet Data Binding – LinqDataView restriction joins In previous episodes In the last post I made on LINQ To DataSet Binding, I talked about how to create a LinqDataView. I’m going to spend some time today talking about some of the interesting...(read more)

LINQ to DataSet Data Binding – Introducing LinqDataView

Erick Thompson — Fri, 05 Oct 2007 23:22:00 GMT

It's long overdue, but I finally was able to finish a few more posts on this series. Let me know if you find it helpful, and what you would like to see more of! Why DataView? As mentioned in this previous post , there are numerous options for data binding...(read more)

Want to see my source?

Erick Thompson — Thu, 04 Oct 2007 23:24:00 GMT

Have you ever wondered exactly what is going on inside of ADO.NET? Is Reflector the first thing you install after Visual Studio? Then you'll be interested in that fact that ScottGu just announced that the source for the .NET framework is going to be released....(read more)

PASS 2007 - Happening now in Denver

Erick Thompson — Tue, 18 Sep 2007 23:36:00 GMT

I'm currently in Denver for the SQL Server PASS conference. I'll be giving a talk about the Entity Framework for DBAs tomorrow (Wednesday) afternoon. If you're there, please come by. Even if you can't make my session, stop by and say hello! Thanks, Eric...(read more)

LINQ to DataSet – Data Binding

Erick Thompson — Fri, 24 Aug 2007 22:39:00 GMT

With the introduction of LINQ to DataSet there finally exists a full featured query language for the DataSet. Now your ability to query your data is limited only by CLR, which is no small thing! For an introduction on LINQ to DataSet, please see this...(read more)

Entity Framework starting points

Erick Thompson — Wed, 01 Aug 2007 02:44:00 GMT

I was recently asked what a high level list of good starting points for the Entity Framework is. This is a tough question as there are a lot of areas to cover. I've put together a list that I think makes sense from my perspective, which is tilted towards...(read more)

Entity Framework for DBAs

Erick Thompson — Fri, 04 May 2007 04:22:00 GMT

There are a host of new technologies coming out, and among them are some ORM type of systems. I want to spend some time exploring how a DBA will work with these, and if they are good or bad. Given that I am on the Entity Framework team, that is the place...(read more)

LINQ to DataSet WebCast (May 2, 2007) - Samples and slides

Erick Thompson — Wed, 02 May 2007 21:50:00 GMT

This morning I performed a MSDN WebCast on LINQ to DataSet. I hope it was useful for people, and that I was able to answer all the questions sufficiently. If you missed the live show, you can always catch the "TiVo" version (i.e., on demand webcast)....(read more)

Beta 1 Orcas Samples - LINQ to Entities

Erick Thompson — Wed, 02 May 2007 06:31:00 GMT

With all the sample confusion during the March CTP, you will be pleased to know that the sample story for Beta 1 is much more smooth. You can find the complete working set of samples at the following URL.

http://msdn2.microsoft.com/en-us/bb330936.aspx

This sample set includes the full suite of LINQ samples, including LINQ to Entities.

As you may have heard, the Entity Framework will not be shipping alongside of Orcas. As such, when Beta 2 is released the LINQ to Entities samples will be found along with the rest of the Entity Framework, in a distinct CTP. Keep your ears open for announcements regarding this!

Erick