Index_E

E

early binding

components , improving performance, 1254

late binding, better than, 1254

OptionExplicit statement, 1254

proxy classes creation, Visual Studio.NET, 1009

EditCommand event, list controls

DataGrid control, editing data, 323

DataList control, selecting & editing data, 329

EditItemIndex property, DataGrid controls, 323

EditItemTemplate template, 293

DataGrid control, editing data, 322

DataList controls, selecting & editing data, 327

Editor attribute, server controls, 948

ElapsedTime value, PerformanceCounterType enu- meration, 1154

enable attribute, <processModel> element, 668

EnableClientScript property, BaseValidator class, 203, 211

enabled attribute, <trace> element, 641, 1125

Enabled property

BaseValidator class, 203, 211

WebControl class, 216

EnableSession property, WebMethod attribute, 974

enableSessionState attribute, <pages> element, 628

EnableSessionState attribute, Page directive, 144

enableVersionHeader attribute, <httpRuntime> element, 627

enableViewState attribute, <pages> element, 628

EnableViewState attribute

Control directive, 160

Form mobile controls, 1077

Page class, 125

Page directive, 134, 144

Control class, 929

HtmlControl class, 176

HTML server controls, ViewState, 181

WebControl class, 216

EnableViewStateMac attribute, Page directive, 144

encoding, 831

Encrypt property, EncryptionExtension attribute, 1054

Encrypt method, FormsAuthentication class, 718

encrypted passwords

see password encryption.

encryption, 1052

see also security

asymmetric cryptography, 1039

custom encryption, 1052

HTTPS, use of, 1053

SOAP headers, use of, 1053

MD5 algorithm, 735

SHA1 algorithm, 735

EncryptionExtension attribute, 1053, 1054

Decrypt property, 1054

Encrypt property, 1054

ProcessMessage function, 1054

EndEdit method, DataRow class, 354, 426

EnsureChildControls method, Control class, 909

EntryPoint field, DllImport attribute, 1190

enumerable classes

collection interfaces, 756

definition, 756

System.Collections namespace, working with, 756

enumeration names , 894

enumerations

numeric values, 219

Web Form controls, property values for, 218

finding enumeration values, 220

setting dynamically, 219

enumerator objects, 757

guidelines, 758

InvalidOperationException, 758

Equals method

HttpSessionState object, 1162

Object class, 41, 780

<error> element, <customErrors> element, 645, 1135

attribute, Page directive, 145

elementErrorMessage property, BaseValidator class, 203

Error event, Page class, 125

error handling

business objects, .NET, 850

business objects, VB.NET example, 857

notifying administrators of errors, 1135

email error notifications, 1137

event logs, through, 1136

server/client side, 142

structured exception handling, 1127

System namespace, importing, 343

error pages, 642

always showing ASP.NET rich error page, 644

custom error pages, 644

ErrorPage property, Page class, 126

errors handling, 1126

Errors property, RowUpdatedEventArgs class, 487

ErrorsOccurred value, UpdateStatus enumeration, 507

Eval method, DataBinder class, 272

format strings, numbers /dates, 274

formatting values & expressions, repeated-value data binding, 273

event bubbling, 139

event handlers

.NET Framework, data management, 340

sample ASP.NET page example, 22

server controls, 170

Web forms, page-processing steps, 137

event logs, 1135

EventLog class, writing using, 1136

web.config configuration file, within, 1136

event-driven programming model

ASP.NET, use within, 25, 115

server controls, within, 213

Web forms, features, 123

EventHandlerList class, System.ComponentModel namespace

AddHandler method, 932

event optimization, 931

RemoveHandler method, 932

EventLog class, System.Diagnostics namespace, 1136

events

application event, 593

Calendar rich control, 254

custom controls, 162

event bubbling, 139

event optimization, 931

list controls, handling events, 248, 307

DataBinding, 308

ItemDataBound, 309

page model, ASP.NET, 169

repeated-value data binding, list controls, 270

server controls, 919

Web Form controls, 238

Web forms, within, 138

Events demonstration page. clickevent

Events property, Control class, 932

ExactSpelling field, DllImport attribute, 1190

Exception class, System namespace, 1127

exception types, structured exception handling, 1133

exceptions

C#, 92

throw statement, 93

try...catch...finally statement, 92

custom exceptions, 1132

file reading & writing, within, 832

divide by zero example, 1029

SOAP, 1029

SoapException class, using, 1029

try...catch statement, trapping using, 1029

structured exception handling, 1127

Visual Basic.NET, 82

TryCatchFinally statement, 82

Execute overloaded method, HttpServerUtility object, 1168

ExecuteNonQuery method, Command class, 348

Command class, updating data sources with SQL example, 454

database stored procedures, explicit parameters example, 414

ExecuteReader method, Command class, 348

DataSet class, relational data access example, 365

DataReader class, relational data access example, 364

ExecuteScalar method, Command class,348

updating data source examples, concurrent updates with RowUpdated event, 503

ExecuteXmlReader method, Command object, 536

executionTimeout attribute, <httpRuntime> element, 626

Exists method,

Directory class, 805

File class example, 807

FileSystemInfo class, 813

PerformanceCounterCategory class, 1146

Expires/~Absolute properties, HttpResponse object, 1166

Explicit attribute

Control directive, 160

Page directive, 145

explicit parameters, database stored procedure, 411

extensibility, ASP.NET, within, 17

extension attribute,<compiler> element, 657

Extension property, FileSystemInfo class, 813