UDDI (Universal Description, Discovery, and Integration), 658–659
UDP (User Datagram Protocol), 955, 958–959
uint type, 35, 41
ulong type, 35, 41
UML (Universal Modeling Language), 183
unary operators, 44, 304, 306
unbounded types, generic classes, 348
unboxing, type comparisons, 297–299
underscore character (_), 39
UndoActionName property, 419
unhandled exceptions, break mode, 165
Unicode value, string literals, 41–42
Uniform Resource Identifier (URI), 745, 958
uninstalling Simple Editor application, 574
Union() method, 991
Universal Description, Discovery, and Integration (UDDI), 658–659
Universal Modeling Language (UML), 183
unsafe code, 8
updates
database, 790–794
deployment process, 546–547
UploadData() method, 963
UploadFile() method, 962
UploadString() method, 963
UploadValues() method, 963
URI (Uniform Resource Identifier), 745, 958
Usage() method, 887
UseDefaultCredentials property, 962
user controls
anonymous users, Web site profiles, 638–640
debugging, 483–484
defined, 477
event handlers, 482–483
LabelTextbox control example, 479–481
properties, adding, 481–482
ValidateUser() method, 610
Web site, 633–635
User Datagram Protocol (UDP), 955, 958–959
user input, string manipulation, 114
user interface components, Properties window, 22
User Interface Editor
accessing, 563
additional dialogs, 565–566
Administrative Install mode, 564
Customer Information dialog, 566
default dialogs, 564–565
Install mode, 564
License Agreement dialog, 566
Register User dialog, 566
Splash dialog, 566
uses for, 557
User property, 664
Userland Software Web site, 655
User's Desktop folder, File System Editor, 557–558
User's Personal Data folder, File System Editor, 558
user-to-application communication, Web services, 655
using keyword, 190