UDDI (Universal Description, Discovery, and Integration), 786
UInt64, 25
unboxing, 62–63
unconditional breakpoints, 291
Unicode, 905
unit of measure, 545–546
unmanaged code
defined, 15
managed vs., 15
update command for connected ADO.NET, 634–636
UpdateXMLDOM.exe file, 699
updating
dataset rows, 805–806
DOM trees, 696–699
existing XML file, 683–686
user control header, 778
user controls, 773–781
about, 773
creating, 773–775
dynamically implementing, 778–781
statistically implementing, 776–778
user-defined data types, 53–68
reference types, 57–62
arrays, 57–61
classes, 61
delegates, 62
interfaces, 61
type conversions, 65–66
type modifiers and qualifiers, 63–65
auto, 63
const, 64
extern, 64
static, 65
value types
defined, 24
overview, 53
_value enum, 54–55
_value struct, 55–57
user-defined reference types arrays, 57–61
classes, 61
delegates, 62
interfaces, 61
using directive, 34, 176–177
Using Group Boxes dialog box, 408
using keyword, 177
utility structures for GDI+, 547–558
overview, 547–548
Point and PointF, 548–549
Rectangle and RectangleF, 551–555
Region, 555–558
Size and SizeF, 549–551