I've found and posted a new fix in the code from my original post: Batch Updates and Deletes with LINQ to SQL.  I'm not sure of the etiquette for this sort of thing: new post (like I'm doing) or just a comment in the original post.  But since I did get a fair amount of hits to the article but minimal comments, people who may have downloaded the code wouldn't get an update notification and I want to be sure to make them aware of an issue/fix (assuming they are monitoring via a RSS feed).... [More]

Like everyone else (or at least you should be), I use LINQPad throughout the day non-stop.  Primarily for database maintenance that would have previously been done by saving a *.sql script.  However, at first when I was new to LINQ (not that I'm a complete expert now), I'd get hesitant when I was about to perform a bunch of updates and/or deletes against my production data.  Being more comfortable in Transact SQL than in LINQ, I wanted to see the SQL statements that would execute before actually calling SubmitChanges().  As plenty of posts have mentioned, it is far more than simply a LINQ to SQL execution tool, but rather:

And LINQPad is more than just a LINQ query tool: it's a code snippet IDE. Instantly execute any C# 3 or VB 9 expression or statement block!

- Joseph Albahari (creator of LINQPad)

With a couple of extension methods, you can do exactly that: preview the SQL before it executes.... [More]

A couple weeks ago, I read the article, LINQ to SQL Extension: Batch Deletion with Lambda Expression by Jeffrey Zhao.  In case you didn't read the article, it discusses the downside of most O/R Mapping frameworks when it comes to multiple updates or deletes.  He states the fact that a SQL statement for each row flagged as update/delete in the entity set is created.  I went about implementing something similar to what Jeffrey envisioned and I'll explain some of the hurdles I had to overcome to achieve it.... [More]