Eric White Technical Evangelist Microsoft Corporation Session Code: OFC403

REDUCE # LINES OF CODE

Actually, it's about reducing Cyclomatic Complexity But Why?

REDUCE POINTS OF POSSIBLE FAILURE (More robust code)

Session Objectives and Takeaways Session Objective(s): Benefits of “Pure FP” 3 Approaches: LINQ / Open XML Tools and Resources

It's All About Transformations Projection Composability Purity Tuples Aggregation

More FP Extension Methods Lazy Evaluation Closures Method Syntax

Open XML Zip Files (called Packages) Packages contain Parts (files in the Zip file) Package has relationship to Parts Parts have relationship to other Parts Content Type tells what the XML is PowerTools for Visual Studio Rock! Open XML Diff is your friend

Open XML SDK V1 Strongly Typed access to Parts No help with the XML V2 Strongly Typed access to Xml Validation Helper Functions

LtxOpenXml Class XDocument Annotations on Parts Extension methods on MainDocumentPart Lazy Projects collections of Named Tuple Types

LINQ to XML Tips Pre-atomize XName and XNamespace Use Extension methods to find optional Elements/Attributes

LINQ to Excel Tables Use friendly names of Tables and Columns Based on LtxOpenXml Class Lazy

Modifying XML Trees “Halloween Problem” Accept Revisions Remove Personal Information Remove Comments See OpenXmlInfo class on my blog

Annotations / Events Use Annotations and Events to determine if tree changed Can implement “Flush” – get list of all parts

In-Memory Open XML Documents Web application servers SharePoint SharePoint Web Services

Transforming in XSLT Style Annotate the tree with new nodes Query to find nodes == XPath pattern Replacement node == Sequence Constructor ApplyTransforms node == xsd:apply-templates Example uses extension methods to reduce syntactic noise Supports Mode

Recap: Three Approaches 1)Pure Functional Transforms 2)“Imperative” Document Modification 3)XSLT Style

DocProc An “imperative” approach to document assembly Part of PowerTools for Open XML Project Alternative to altChunk

Document Reflector “Build a document assembly solution in 5 minutes” Functional Construction in “Expression Context”

Open XML Code Tester Content Controls are Key Uses Title of Content Control Puts XML in Content Controls

Next Steps Go through the Functional Programming Tutorial Download, run the samples Modify them for your scenario Get involved in the community

Key Resources Open XML SDK V1 Open XML SDK V2 MSDN Contains how-to articles and documentation Forums related to SDK

Key Resources Connect Access to more articles and forums Ability to log bugs and vote for features

Key Resources Blogs blogs.msdn.com/ericwhite blogs.msdn.com/brian_jones blogs.msdn.com/dmahugh PowerTools for Visual Studio ?FamilyId=46B6BF86-E35D-4870-B214- 4D7B72B02BF9&displaylang=en PowerTools for Open XML

Sessions On-Demand & Community Resources for IT Professionals Resources for Developers Microsoft Certification and Training Resources Microsoft Certification & Training Resources Resources

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