Index

E

Employee form for SDISample project, 121-122

employee list form

changing sort order in, 104

overloading constructors in, 103

sample code for, 97-103

Employee Record form, 62-64

encryption in XML, 532-535

EndInvoke method, 613, 625-626

enumerated values

adding to form's local variable region, 544

saving in XML file, 552

ErrDialog project

code for, 402-404

form for, 402, 405

setting up, 401-402

error dialog box

creating explicit error messages in ErrDialog project, 401-405

modality of, 405-406

error handling, 395-444. See also ErrorProvider control; GridRestrict project; throwing errors; Tracing project

adding runtime switch to Tracing project, 430-431

catching errors before they happen, 434-437

creating event logger for diagnostics, 407-416

creating explicit error messages, 401-405

displaying design-time errors in NumberExtender control, 525-526

error checking, 49

EventLogger in .NET, 406-407

Finally block, 437-443

instrumenting code, 417-418

main sources of errors, 395

making trace listener, 418-430

modality of error dialog box, 405-406

showing basic errors with ErrorProvider object, 395-406

trapping errors with SetRegularExpression method, 524-525

Try-Catch-Finally block for, 431

uses of ErrorProvider object, 401

viewing event log, 416-417

error icons in GridRestrict project, 373-374

ErrorProvider control

extending, 495

instantiating with extender, 502

selecting properties for, 397-398

ErrorProvider object

creating, 395-406

function of, 395-396

uses of, 401

errors

assertion code and, 305

entering names, 63

loose resources and, 188, 192

preventing bad drop zones in Photo project, 315-319

ErrProvider project, 396-406

code for CheckedListBox, 400

delegate for, 398-399

form with errors, 400

setting up form, 396-397

event handlers

adding validation code from, 28-33

for mouse drag-and-drop operations, 277-281

Event Viewer, 416-417

EventArgs class, 216

EventLogger in .NET, 406-407

events

assigning delegates dynamically to, 123

handling with own delegate, 135

KeyDown, KeyPress, and KeyUp, 204-205

mouse uses and, 216

mouse-based data entry, 216

observing key, 214

on-the-fly validation and keyboard, 204, 214-215

exact matching in regular expressions, 452-453

extending control properties, 494-528. See also NumberExtender control; testing NumberExtender control

creating number validation extender, 495-496

creating validation controls, 494-495

ErrorProvider control, 495

eXtensible Markup Language. See XML

eXtensible Schema Definition (XSD), 558

externalizing resources

binary resource files, 163-164

calendars, 167, 172

determining language sort order, 172-173

directory structure for car mileage expense report, 175-176

displaying currency and numbers, 171-172

displaying dates and time, 170-171, 189

fallback method for locating resources, 164-165

localized data-entry example, 173-192

loose resources, 188

purpose for, 159-160

resource files, 163-164

retrieving resources, 165-166

text resource files, 160

XML resource files, 160-163