Professional C# 2005 with .NET 3.0

UAC (user account control), 1654–1658

getting admin privileges to application, 1664–1665

shield icons, 1656–1658

UDP (User Datagram Protocol)

TCP vs., 1365–1366

UDP class, 1366–1367

UdpClient class, 1362, 1366–1367

UDTs (user-defined types), 958–968

aggregates, 965–968

AJAX Library OOP extensions, 1328

creating, 958–964

overview of, 958

using, 964

using from client-side code, 964–968

uiAccess attribute, 1654

UML (Unified Modeling Language), 711–712

unary operator, 162

unbound classes, 1421

unboxing

casts, 188

type conversion and, 168, 244–245

unchecked operator, 159–160

#undef, preprocessor directive, 71–72

Unicode issues, 638–639

Unified Modeling Language (UML), 711–712

Uniform Resource Identifier (URI), 1439–1440

Unlock( ) method, 1386–1387

unmanaged resources, 325

unmanaged types, 334

unsafe keyword, 331–332

unsafe safety level, 956

UnsafeNativeMethods class, 997

update constraints, 880–881

UPDATE statements, 859

UpdatePanel control, ASP.NET AJAX, 1306, 1311, 1318–1321

UpdateProgress control, ASP.NET AJAX, 1306, 1311–1312, 1321–1322

UpdateRowSource property, 891

updates

Active Directory object, 1604–1605

data adapters for, 889–890

data source in Visual Studio, 1062–1063

Region records in databases, 863–864

rows, 892

server-side UpdatePanel, 1320–1321

UploadData( ) method, WebClient, 1342

UploadFile( ) method, WebClient, 1342

UPN (user principal name), 1599

uppercase, converting text to, 1125

Uri class, 1357–1358

UriBuilder class, 1357–1358

URIs (Uniform Resource Identifiers)

hosting .NET Remoting servers in ASP.NET, 1439–1440

overview of, 1357–1358

supported by .NET Framework, 1340

URLs vs., 1340

UrlAttribute, 1418–1419

URLs (Uniform Resource Locators)

activation, 1417

hosting .NET Remoting servers in ASP.NET, 1439–1440

URIs vs., 1340

usage conventions, 76–81

fields, 81

naming conventions, 77–80

overview of, 76–77

properties and methods, 80–81

user account control. See UAC (user account control)

user controls, ASP.NET, 1256–1264

defined, 1220

overview of, 1256–1257

in PCSDemoSite, 1263–1264

simple, 1257–1263

user controls, Windows Forms, 1030–1035

User Datagram Protocol (UDP)

TCP vs., 1365–1366

UDP class, 1366–1367

user input, 1122–1126

user interaction, for controls, 996–997

User Interface editor, Visual Studio 2005, 463–465

user interface layer, AJAX Library, 1308

user policy level, 601–602

user principal name (UPN), 1599

user-defined exceptions

catching exceptions, 384–385

classes, 384–385

throwing exceptions, 387–390

user-defined functions

creating, 971

SQL Server 2005, 970–972

working with, 971–972

user-defined types. See UDTs (user-defined types)

username, Active Directory binding, 1599

users, assigning to roles, 1278–1279

UserSearch application, 1610–1614

get property names of user class, 1612–1613

get schema naming context, 1611–1612

search for user objects, 1613–1614

user interface, 1610–1611

UseSynchronizationContext property, ServiceBehavior, 1536

using block statement, 855–856

using command, 1113 1743

using keyword

aliases and classes assigned with, 61

importing namespaces in C#, 1622

namespaces and, 60–61

using namespace statement, 1622

using statement, 1643–1644

utility classes, Internet access, 1357–1361