UNIQUE Constraints
Adding (code listing), 351
Creating (code listing), 348–349
defined, 345
UniqueConstraint class, 348–349
Unix systems, 438
unmanaged code, 709
unstructured exceptions (VB .NET), 359
untyped DataSets
defined, 51
and typed DataSets, 127–128
updating
data (ASP.NET), 506
Data on Update Button Click (code listing), 506
data sources, 776
editing, and deleting with DataList control, 573–581
inserting, and deleting with DataGrids, 342–344
Update command, 201
Update, Delete, Cancel, and Edit Command Handlers, Adding (code listing), 572
Update, Delete, Cancel, and Edit Command Handlers Code (code listing), 573
Update method, 159, 176–178
UPDATE statements (SQL), 534, 802
UpdateCommand event handler, 577
UpdateDataSource and UpdateDataSet Methods Generated by Data Form Wizard (code listing), 70–71
updategrams, 430
updates, .NET 1.1, 391
User component, Video Store Application, 654–659
user controls (server), 483
user-defined stored procedures, 393
User-Defined Variables (code listing), 773–774
User Object in User Component (code listing), 655–656
user queues, 725–726
User test case, Video Store Application, 659–661
UserData Object in User Component (code listing), 656–657
UserDataAccess Object in User Component (code listing), 657–659
UserTestCase Object (code listing), 660–661