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• A simple way to programmatically create SharePoint security groups

  When it comes to SharePoint deployments, I try to automate everything I can.  I don’t like manual steps especially when it comes to setting up security.  A common task when deploying any sites is setting up security in some manner.  Today... Posted Mar 08 2010, 11:12 AM by CoreyRoth with | with 10 comment(s) Filed under: SharePoint, LINQ to XML, LINQ

• Checking to see if a list item exists in SharePoint 2010

  This is another topic that is quite dear to most SharePoint developers.  We’ve all been there.  We want to know if a list item exists and the indexer is useless.  It throws an exception should we attempt to access an item that does not... Posted Oct 21 2009, 11:02 AM by CoreyRoth with | with 1 comment(s) Filed under: SharePoint, LINQ, SharePoint 2010, SPC09, SP2010 Beta

• Linq to XML and Deleting Lists on Feature Deactivation

  A few months ago, I discussed how to use LINQ to XML to parse your elements.xml file to delete any files that you may have deployed on feature activation.  Today I have decided to reuse this concept to delete any lists that I have created when I... Posted Sep 24 2009, 03:04 PM by CoreyRoth with | with no comments Filed under: SharePoint, LINQ to XML, LINQ, Feature, Enterprise Library

• Code samples from my short talk about LINQ to XML

  Today, I had the opportunity to give a short introduction on how to do some basic queries on XML documents with LINQ to XML. In the talk, I talked about how to create anonymous types from your XML document so that you can work with strong types. I also... Posted Apr 29 2009, 10:02 AM by CoreyRoth with | with no comments Filed under: LINQ to XML, LINQ, Presentations, InfoPath

• String[] in columns returned from KeywordQuery.Execute

  I have posted in the past about how to use the KeywordQuery class to execute an Enterprise Search query. This makes it easy to get a DataTable containing search results. However, one caveat with this is that some columns get returned as a string array... Posted Dec 11 2008, 10:17 AM by CoreyRoth with | with no comments Filed under: SharePoint, LINQ, MOSS, Enterprise Search, LINQ to DataSet

• 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... Posted Oct 15 2008, 02:43 PM by CoreyRoth with | with 2 comment(s) Filed under: LINQ, LINQ to SQL, C# 3.0

• Select Where In with LINQ

  I can't talk about SharePoint all the time, so I thought I would talk about how to perform a type of query with LINQ. In T-SQL you might have wrote something like this at one point. SELECT Title, Id FROM Table1 WHERE Id IN (SELECT Id FROM Table2)... Posted Jul 01 2008, 05:14 PM by CoreyRoth with | with 3 comment(s) Filed under: LINQ

• 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... Posted Apr 24 2008, 10:18 AM by CoreyRoth with | with no comments Filed under: LINQ, C# 3.0

• How to: Use the Group Clause in LINQ

  As you know, LINQ is similar in a lot of ways to T-SQL, but as you go to start doing things with grouping or joining, you will find that that there are some syntactical differences. There are two ways you can use the group clause in LINQ, which way you... Posted Mar 26 2008, 09:29 AM by CoreyRoth with | with 4 comment(s) Filed under: LINQ, LINQ to DataSet

• Using LINQ to make Enterprise Search Results more usable

  In my previous post about using the KeywordQuery class, I had one small omission. The fact is that when you add your own managed properties using the SelectProperties collection of the keyword class, the data type you get back is a string[] containing... Posted Mar 25 2008, 09:58 AM by CoreyRoth with | with no comments Filed under: SharePoint, LINQ, MOSS, Enterprise Search

• 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... Posted Mar 17 2008, 07:54 PM by CoreyRoth with | with 2 comment(s) Filed under: LINQ, LINQ to SQL, ASP.NET, Visual Studio 2008, C# 3.0

• LINQ to SQL Logging

  The other day I was reading Charlie Calvert's excellent post on LINQ and Deferred Execution and stumbled upon a logging feature inside LINQ to SQL. By setting the Log property to a TextWriter (in this case Console.Out), LINQ to SQL will log the query... Posted Feb 21 2008, 09:24 AM by CoreyRoth with | with no comments Filed under: LINQ, LINQ to SQL

• 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... Posted Feb 18 2008, 10:01 AM by CoreyRoth with | with 1 comment(s) Filed under: LINQ, C# 3.0, LINQ to DataSet

• How I used LINQ to XML to Create Document Library Folders

  I have been doing a lot of document library work lately and in my work I had a need to create a series of subfolders in the document library using a particular custom content type. This meant I was going to need to write a little code. I decided to keep... Posted Jan 17 2008, 05:29 PM by C-Dog's .NET Tip of the Day Filed under: SharePoint, LINQ to XML, Document Library, LINQ