I

ICollection interface, 45, 106

IComparable interface, 20, 98

IDbConnection interface, 126, 156

IDENTITY keyword, 129

identity management service, 151–152

IDispatch interface, 53

IEnumerable interface

Add method, 45

AsEnumerable operator, 117

Cast operator, 122

Concat operator, 114

data querying, 143

GroupBy operator, 84

GroupJoin operator, 89

InDocumentOrder method, 188

IQueryable vs., 141

LINQ queries, 189

LINQ to XML queries, 182

overview, 25–28

query expressions, 48

querying DataSets, 160

Select operator, 78–79

SelectMany operator, 79

ToArray operator, 118

ToList operator, 118

TypedTableBase class, 162

XElement class and, 183

XNode class, 174, 186

IEnumerator interface, 25–28

IEqualityComparer interface, 114

IGrouping interface, 85

IL (intermediate language), 20

ILDASM tool, 55

immediate loading, 136

implicitly typed local variables. See local type inference

Imports statement, 15, 55, 179

IMultipleResults return type, 143

InDocumentOrder method, 188

inheritance

class support, 36

entity, 129–131

LINQ to Entities, 163

stored procedures, 145

type, 93

InheritanceMapping attribute, 129, 144

initializing object expressions, 42–46

inner equijoin, 88

INotifyPropertyChanged interface, 139

INotifyPropertyChanging interface, 138–139

INSERT statement (SQL)

concurrent operations, 156

conflict detection, 157

entity updates, 152

stored procedures, 156–157

instance methods, 39–40

int type

Average operator support, 99

Min operator support, 98

Sum operator support, 95

var keyword example, 30

IntelliSense feature (Visual Studio), 14, 37, 74, 191

intermediate language (IL), 20

internal classes, 36

Intersect operator, 92–94

InvalidOperationException error, 110–112

InvalidUseResult type, 30

Invoke method, 36

IOrderedSequence interface, 82

IQueryable interface, 125, 141

IsAfter method (XNode), 181

IsBefore method (XNode), 181

IsNull method, 162

IsPrimaryKey property, 128, 152

iterators, 28