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My 500th Post! Left Outer Joins with LINQ

Today, this blog reaches an important milestone. This is my 500th post. It's just a number, but I thought I would use it as an opportunity to talk about the history of the blog and where it is heading. On December 1st, 2004, I wrote my first .NET Tip of the Day about a great new method on primitives...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 10-15-2008
Updating Data with LINQ to SQL and GridViews when using a View

Look! It's a post that isn't about SharePoint! Today, I want to talk about some of the issues I have run into when trying to update data using a GridView when bound to a LinqDataSource. This data source has an EnableUpdate property, but unfortunately there is more to it than just that. It works...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 10-07-2008
Checking for empty EnumerableRowCollections when using LINQ

After you query something with LINQ, you may want to know if any results were returned before your start enumerating or working with the EnumerableRowCollection (that's most likely the type behind that var you are using in most cases). Consider the following example. DataTable myDataTable = new DataTable...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 04-24-2008
Using an Extension Method to remove a Web Part from the Gallery

When you deactivate a feature that deployed a web part, it is a good idea to remove that web part from the gallery. This makes things much more likely to work when you upgrade said web part later. Like everything in SharePoint, this task is more complicated than it needs to be. You would think you could...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 04-15-2008
How to: Use LINQ to SQL without using the Object Relational Designer

LINQ to SQL has already proved to be extremely easy to use to create object relational mappings when you have an existing database schema using the Object Relational Designer. This designer is good, but you may not want something that is autogenerating your domain classes. You may want to generate your...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 03-17-2008
Using an Extension Method to check if an item exists in a SharePoint collection

As I have mentioned before, one of my biggest complaints about SharePoint is that none of the collections in the SharePoint API have any way to determine if an item exists. Extension Methods offer a slightly more elegant way to do this, although the underlying code still violated multiple best practice...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 03-03-2008
Making DataSets tolerable using LINQ to DataSet

Unfortunately, most of us aren't working in a perfect world, so it is bound to happen that you run into a dataset or two. Whatever the reason (the developer was lazy, you're maintaining legacy code, someone didn't know any better, or you're just working with the SharePoint API), it would...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 02-18-2008
Using Object Initalizers yet?

Object Initalizers aren't talked about very much as one of the new features in C# 3.0, but I find them pretty useful from time to time (esepcially when dealing with the SharePoint API). They are great, when there isn't a constructor that has all of the arguments that you need to initialize the...

Posted to Corey Roth [MVP] (Weblog) by CoreyRoth on 02-14-2008

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