Developing Office Client Solutions Using LINQ and Open XML Eric White

Technical EvangelistMicrosoft CorporationSession Code: OFC403

REDUCE# LINES

OF CODE

Actually, it's about reducing Cyclomatic Complexity

But Why?

REDUCEPOINTS OF POSSIBLE

FAILURE(More robust code)

Session Objectives and Takeaways

Session Objective(s): Benefits of “Pure FP”3 Approaches: LINQ / Open XMLTools and Resources

It's All About Transformations

ProjectionComposabilityPurityTuplesAggregation

More FP

Extension MethodsLazy EvaluationClosuresMethod Syntax

Open XML

Zip Files (called Packages)Packages contain Parts (files in the Zip file)Package has relationship to PartsParts have relationship to other PartsContent Type tells what the XML is

PowerTools for Visual Studio Rock!Open XML Diff is your friend

Open XML SDK

V1Strongly Typed access to PartsNo help with the XML

V2Strongly Typed access to XmlValidationHelper Functions

LtxOpenXml Class

XDocument Annotations on PartsExtension methods on MainDocumentPartLazyProjects collections of Named Tuple Types

LINQ to XML Tips

Pre-atomize XName and XNamespaceUse Extension methods to find optional Elements/Attributes

LINQ to Excel Tables

Use friendly names of Tables and ColumnsBased on LtxOpenXml ClassLazy

Modifying XML Trees

“Halloween Problem”Accept RevisionsRemove Personal InformationRemove CommentsSee OpenXmlInfo class on my blog

Annotations / Events

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

In-Memory Open XML Documents

Web application serversSharePointSharePoint Web Services

Transforming in XSLT Style

Annotate the tree with new nodesQuery to find nodes == XPath patternReplacement node == Sequence ConstructorApplyTransforms node == xsd:apply-templates

Example uses extension methods to reduce syntactic noiseSupports Mode

Recap: Three Approaches

1) Pure Functional Transforms2) “Imperative” Document Modification3) XSLT Style

DocProc

An “imperative” approach to document assemblyPart of PowerTools for Open XML ProjectAlternative to altChunk

Document Reflector

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

Open XML Code Tester

Content Controls are KeyUses Title of Content ControlPuts XML in Content Controls

Next Steps

Go through the Functional Programming TutorialDownload, run the samples

Modify them for your scenarioGet involved in the community

question & answer

Key Resources

Open XML SDK V1http://go.microsoft.com/fwlink/?LinkId=120908

Open XML SDK V2http://go.microsoft.com/fwlink/?LinkId=127912

MSDNContains how-to articles and documentationForums related to SDKhttp://msdn.microsoft.com/office/xml

Key Resources

ConnectAccess to more articles and forumsAbility to log bugs and vote for featureshttp://connect.microsoft.com

Key Resources

Blogsblogs.msdn.com/ericwhiteblogs.msdn.com/brian_jonesblogs.msdn.com/dmahugh

PowerTools for Visual Studiohttp://www.microsoft.com/downloads/details.aspx?FamilyId=46B6BF86-E35D-4870-B214-4D7B72B02BF9&displaylang=en

PowerTools for Open XMLwww.codeplex.com/powertools

www.microsoft.com/teched

Sessions On-Demand & Community

http://microsoft.com/technet

Resources for IT Professionals

http://microsoft.com/msdn

Resources for Developers

www.microsoft.com/learningMicrosoft Certification and Training Resources

www.microsoft.com/learning

Microsoft Certification & Training Resources

Resources

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