a0013 pro linq language integrated query in c sharp 200 morebook vn 9064

this print for content only—size & color not accurate spine = 1.176" 624 page countPro LINQ: Language Integrated Query in C# 2008 Dear Reader, Pro LINQ: Language Integrated Query in C# 2

this print for content only—size & color not accurate spine = 1.176" 624 page count

Pro LINQ: Language Integrated Query in C# 2008

Dear Reader,

Pro LINQ: Language Integrated Query in C# 2008 is all about code Literally,

this book starts with code and ends with code In writing this book, it has been

my desire to create a treasury of meaningful LINQ examples Rather than show you a single, simplest case example, I’ve strived to fill in the whole picture and demonstrate the breadth of LINQ operators and prototypes that are available

to you With this information, you will be able to put LINQ to use as it was intended and reap the maximum rewards for your investment

Throughout this book, it is my aim to give you the information that actually matters in a form that you can use So, rather than obscure the relevant LINQ principles by focusing on a complex demonstration application you can’t put to practical use, Pro LINQ cuts right to the chase of each LINQ operator, method,

or class However, where complexity is necessary to truly demonstrate an issue, the examples are right there in the thick of it For example, code samples dem-onstrating how to handle concurrency conflicts actually create concurrency conflicts, so you can step through the code and see them unfold

This book is for anyone with an elementary understanding of C# who wants

to understand LINQ and LINQ-relevant C# 3.0 language features You need not

be up on all the latest C# 2.0 or 3.0 features to understand Pro LINQ When a deeper knowledge of an advanced language feature is necessary, I begin from the ground up to make sure everyone is well equipped for the discussion

Joseph C Rattz, Jr

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Thank you for doing the things that gave me time to work on this book.

XContainer.Descendants() method, traversing

236–237 XContainer.Elements() method, 232–234

vs Extensions.Elements operator, 273–274

XContainer.Nodes() method, 228–229

XDeclaration class, 210–211

XDocument class, 212–213

XDocument.Load() method, 220–222

XDocument.Save() methods, 218–219

XDocumentType class, 211–212

XDocumentType.InteralSubset, 251

XDocumentType.Name, 251

XDocumentType.PublicId, 251

XDocumentType.SystemId, 251

XElement class, 4

XElement object

accessing XML document from, 226–227

instantiating, 206

traversing down recursively from, 236–237

traversing up from, 227–228, 235–236

XElement.AddFirst method, 215

XElement.AncestorsAndSelf() method, 235–236

XElement.Attribute() method, 257–258

XElement.Attributes() method, 258

XElement.DescendantsAndSelf() method,

237–238 XElement.FirstAttribute property, 255

XElement.LastAttribute property, 257

XElement.Load() method, 222–223

XElement.RemoveAll() method, 249

XElement.ReplaceAll() method, 252–253

XElement.Save() methods, 219–220

XLinq See LINQ to XML

XML additional capabilities, 301–336 desired structure, 188

LINQ to, 187–192 querying with XPath syntax, 335 simple example, 187–188 XML annotations, 263–267 XML attributes, 255–263 XML data

modifying, 242–253 query joining database data with, 583

XML documents See also documents

allowing user edit of book participant, 331–332

creating for validating, 330–331 creating new for transformed version, 311 creating with book participants, 311 transforming using function construction, 312–314

transforming with XSLT, 310–311 unsuccessfully validating against XSD schema, 325–329

unsuccessfully validating XML element, 332–334

validating, 322–325, 331 XML element, successfully validating, 330 XML events

examples, 268–272 registering for, 267 XML external mapping, file schema, 484–485 XML input, 220–222

600 ■I N D E X

XML mapping files

abbreviated external, 517–518

considerations for using, 393

vs DBML intermediate file, 398

XML namespaces See namespaces

XML output, 218–220

XML schema

creating, 321–322

creating using functional construction,

194–195 obtaining, 321–334

XML strings, parsing, 223

XML transformations See also transformations

simplifying with helper methods, 314

tips for performing, 314–319

XML traversal, 224–242

properties, 225–228

XML tree

adding nodes to, 242–243

for examples in LINQ to XML, 312

generating with a LINQ query, 207–208

problems removing nodes from, 203–205

producing, 200

recursively traversing up, 234–235

traversing backward, 225–226

traversing down, 228–229

traversing forward through, 225

XML tree construction

deferred execution of, 217

immediate execution of, 216

XMLHelper method, 191

XmlMappingSource object, 518

XName object

creating, 213

for XML elements, 198–199

XNamespace class, 214 XNode.AddAfterSelf() method, 246 XNode.AddBeforeSelf() method, 244–245 XNode.Ancestors() method, 234–235 XNode.ElementsAfterSelf() method, 239–240 XNode.ElementsBeforeSelf() method, 241–242 XNode.NextNode property, 225

XNode.NodesAfterSelf() method, 238–239 XNode.NodesBeforeSelf() method, 240–241 XNode.PreviousNode property, 225–226 XNode.Remove() method247–248 XNodeDocumentOrderComparer class, 202 XNodeEqualityComparer class, 202 XObject event handling, 269–272 XObject.AddAnnotation() method, 263 XObject.Annotation()/XObject.Annotations() method, 263

XObject.Changed event, 268 XObject.Changing event, 268 XObject.Document property, accessing XML document via, 226–227

XObject.Parent property, 227–228 XObject.RemoveAnnotations() method, 264 XProcessingInstruction class, 214–215 XProcessingInstruction.Data, 252 XProcessingInstruction.Target, 252 XSLT trasformations, advantages of, 309–310 XStreamingElement class, 216–217

XText object, creating text node with, 217–218 XText.Value, on XText objects, 250

■ Y

yield keyword, for writing enumerators, 55 [Your]DataContext class, 499–500

constructor prototype connecting to database, 511–512