LINQ in Action - THE LINQ book

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• Functional Programming
• OpenXML
• OpenXmlSdk
• SharePoint
• Useful Code Snippets

• Getting Started with SharePoint (WSS) Web Services using LINQ to XML

  [Blog Map] Web services are one of the most effective and convenient ways for casual developers to access SharePoint lists and document libraries. They have a reputation for being a bit difficult; LINQ to XML can make them easier to use. This post presents the basic steps for getting started with Windows SharePoint Services Web Services using LINQ to XML (either C# or VB). In several upcoming posts, I’ll present some more information about using web services, as well as more notes on the code presented Read More... Posted Sunday, January 04, 2009 10:32 AM from Eric White's Blog | (Comments Off) Filed under: LINQ, xml, OpenXML, LINQ to XML, SharePoint, Useful Code Snippets

• Writing Succinct Code to move XElement and XAttribute Objects to One LINQ to XML Tree from Another

  There is an interesting idiom of LINQ to XML that makes it easy to write short, succinct code when creating one XML tree from another. Many folks are not aware of this idiom, but it is a useful and convenient trick. I documented this idiom in the LINQ to XML documentation, however, it is worthwhile to discuss in a blog post. This post describes this idiom in detail. As you probably know, one of the overloads of the XElement constructors is a params array, so that you can pass multiple child nodes Read More... Posted Thursday, January 01, 2009 7:36 AM from Eric White's Blog | (Comments Off) Filed under: LINQ, xml, LINQ to XML, Functional Programming

• Align Attributes when Formatting XML using LINQ to XML

  Sometimes an XML element contains a large number of attributes, and the values of the attributes may be long. When written to the console, such lines wrap, making it hard to read the XML. In particular, the XML responses from SharePoint web services often contain many attributes for each element. However, you can use appropriate settings for an XmlWriter so that the attributes are aligned, and each attribute is on a separate line. This post shows how to do this. XNamespace w = "http://www.northwind.com/examples/2008" Read More... Posted Monday, December 29, 2008 5:54 PM from Eric White's Blog | (Comments Off) Filed under: LINQ, xml, LINQ to XML

• A More Robust Approach for Handling XName Objects in LINQ to XML

  [Blog Map] One of the advantages of V2 of the Open XML SDK is that it provides us with a strongly typed XML document object model (DOM). Because elements are represented by classes, and attributes are represented by properties in the classes, developers are not at risk of misspelling element and attribute names. I was chatting about the Open XML SDK V2 with a customer, who appreciated the advantages of this approach. However, V2 of the SDK is not an option for them, because it won’t be available Read More... Posted Monday, December 15, 2008 12:54 PM from Eric White's Blog | (Comments Off) Filed under: LINQ, xml, OpenXML, LINQ to XML, OpenXmlSdk

• Debugging LINQ Queries

  [Blog Map] Debugging LINQ queries can be problematic. One of the reasons is that quite often, you write a large query as a single expression, and you can’t set a breakpoint mid-expression. Writing large queries in expression context is particularly powerful when using functional construction to form XML (or using the strongly typed DOM in Open XML SDK V2). This post presents a little trick that makes it easier to use the debugger with LINQ queries that are written using ‘method syntax’. The gist Read More... Posted Thursday, November 06, 2008 8:49 PM from Eric White's Blog | (Comments Off) Filed under: LINQ, xml, LINQ to XML, Functional Programming

• Using LINQ to XML Events and Annotations to Track if an XML Tree has Changed

  You may optionally be making a number of modifications to a very large XDocument object. Because of a complicated algorithm, you may not necessarily know ahead of time whether you will be making changes. If you don’t make any changes, then you don’t want to unnecessarily serialize the tree and save it to disk, or send it over the wire. This post presents a simple technique to determine if an XDocument has ever been modified since deserialization or creation. For example, you might have a very large Read More... Posted Sunday, October 12, 2008 3:54 AM from Eric White's Blog | (Comments Off) Filed under: LINQ, xml, LINQ to XML, Useful Code Snippets