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Tech Ed

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...
Posted Friday, May 30, 2008 9:28 AM by Erick Thompson | 0 Comments

LINQ to DataSet - LinqDataView and indexes

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...
Posted Monday, May 19, 2008 12:37 PM by Erick Thompson | 3 Comments

DataSets and nullable types

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...
Posted Thursday, May 15, 2008 7:14 PM by Erick Thompson | 9 Comments
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EnumerableRowCollection Type

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...
Posted Tuesday, November 06, 2007 5:40 PM by Erick Thompson | 1 Comments

LINQ to DataSet Data Binding – LinqDataView Restriction Joins

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...
Posted Wednesday, October 24, 2007 11:39 AM by Erick Thompson | 1 Comments
Attachment(s): LinqDataView Restriction Join.zip

LINQ to DataSet Data Binding – Introducing LinqDataView

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...
Posted Friday, October 05, 2007 1:22 PM by Erick Thompson | 4 Comments

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

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...
Posted Wednesday, May 02, 2007 11:50 AM by Erick Thompson | 1 Comments
Attachment(s): DataSet Webcast - May 07 - Samples.zip
 
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