A

Add method

DataContext class, 152–153

IEnumerable interface, 45

AddAfterSelf method (XNode), 173

AddBeforeSelf method (XNode), 173

ADO.NET

LINQ to ADO.NET, 15–16, 123

LINQ to Entities, 164

Transaction property, 156

ADO.NET Entity Framework

abstracting from physical layer, 201–203

ADO.NET standard approach, 197–201

entity data modeling, 204–207

LINQ to SQL and, 216

manipulating entities, 214–216

querying entities, 207–213

Aggregate operator, 100–103

All operator, 105–106

ALTER TABLE statement, 158

Ancestors method, 187

AncestorsAndSelf method, 188

Annotation method, 180

annotations, 180

Annotations method, 180

anonymous methods

C# support, 23–25, 69

delegates and, 21

lambda expressions, 31–36, 69

LINQ to XML support, 168

parameters, 24

anonymous types

C# support, 46–48

defined, 94

storing query results, 49

Visual Basic support, 58–59

Any operator, 105

APIs (application programming interfaces), 1, 167, 169–180

ArgumentException error, 98, 119

ArgumentNullException error, 77, 99

ArgumentOutOfRangeException error, 112

AsEnumerable method, 160–162

AsEnumerable operator, 117–118

AssociateWith method (DataShape), 137–138

Association attribute

class entities, 132

EntityRef class, 133

Name property, 138

OtherKey property, 134, 138

Unique property, 138

associative queries, 148–149

attribute axis, 67

attributes, LINQ to XML queries, 182

Average operator, 99–100

Axes functions (XPath), 187