Index

E

early binding vs. late binding, 62–65

function overloading and, 62–63

overview of, 62

returning values from functions, 63–65

EditButtonColumn control, 332

Edit menu, 27

Edit System Variable dialog box, 579

elements, 116, 190–92. See also configuration elements

else statements, 67

e-mail capacity, adding to Web applications, 246–51

Enable attribute, <processModel>, 554

EnableClientScript property, BaseValidator, 264

enabled attribute, <trace>, 520

Enabled property, BaseValidator, 264

enableKernelOutputCache attribute, <httpRuntime>, 523

EnableSessionState attribute, @Page directive, 196

enableSessionState attribute, <pages>, 533

enableVersionHeader attribute, <httpRuntime>, 523

enableViewState attribute, <pages>, 533

EnableViewStateMac attribute, @Page directive, 196

enableViewStateMac attribute, <pages>, 402, 533

encapsulation, 84

encryption

password storage and, 149

SSL, 165, 428

end user license agreement (EULA), 568

enumerations

declaring, 60

RegLogin example, 375

as value data type, 53

Environment Variables, 579

equality operator (==), 59

error handling

adding, 80–82

checking return values, 78

error types, 77

structured, 78–80

throwing exceptions, 79

Web Form pages, 224

ErrorMessage property, BaseValidator, 264

error messages

ASP classic, 483–84

ASP.NET, 496

ErrorPage attribute, @Page directive, 196

errors

404-Not Found errors, 118–23

logic errors, 492

runtime errors, 491–92

semantic errors, 491

syntax errors, 491

types of, 77

<errors> child element, <customErrors>, 535–36

EULA (end user license agreement), 568

EventArgs, 369, 371

event-based programming, 508

event handlers

ASP.NET, 191, 369–70

controls, 223–24

DataGrid controls, 339–40

DataList controls, 343–44

overview of, 220–21

Page_Error, 224

Page_Load, 220

postbacks, 382

server controls, 370–71

Web applications, 45

Web Form pages, 221–23, 227

event keyword, 370

EventName, 370–71

events

creating, 369–70

execution order, 372–73

overriding inherited, 371–72

raising, 369–70

RegLogin example, 382–86

exception handling. See error handling

ExecuteReader method, SqlDataReader, 322

ExecuteScalar method, OleDbCommand, 296

ExecuteXmlReader, 294

execution Timeout attribute, <httpRuntime>, 523

exiting Visual Studio .NET, 29–30

expiration, caching, 456–57

Explicit attribute, 196, 527

expressions, 50–51

extension attribute, <compilation>, 529