U

UI character, 135

UInteger data type, 132, 135, 138

ULong data type, 132, 135, 138

Unary operator, 181

Unboxing, defined, 456

Underscore(_)

line continuation, 128–29

subroutine names, 195

Undo

ClearUndo, 971, 987

Undo, 972

UndoActionName, 971

Unexpected conditions

defined, 236

predicting, 238

validation activities, 238–40

Unindent, 118

Unique, 348

UniqueConstraint, 352–53

Units of measure, PageUnits, 562

Universal Transformation Format (UTF), 771–72

Unlock, 771

UnlockBitmap, 649–51

UnlockBits, 640, 649–50

Unmanaged resources, 461

Unsigned integers, BinaryReader methods, 774

UpdateCommand, 331, 336

UpdateRule, 352

Upgrade Visual Basic 6 Code, 38

URLs, DetectUrls, 969

US character, 135

User(s)

AllUsersApplicationData, 801

CurrentUser, 746

CurrentUserApplicationData, 801

data binding, 362–65

HKEY_CURRENT_USER, 744

HKEY_USERS, 744

My.Computer.Registry, 746

My.User, 1075

UserDomainName, 743

UserInteractive, 743

UserName, 743

User Account Control (UAC) security, 415–22

application manifest, 420

elevated privileges, 416–22

embedded manifest, 421–22

RunAs, 419

special privileges, avoiding, 417

UAC shield, 418–19

UserAppDataPath, 764

UserAppDataRegistry, 764

UserControl

assign attributes, 374

composite control, 380

in executable projects, 387–88

UserControl Test Container, 369–70

User interface

user-friendly interface, 267

Windows Presentation Foundation (WPF), 696–97

User-unhandled, 26

UseWaitCursor, 764, 1014

UShort data type, 132, 135, 138

Using, 157, 874