《VB2008从入门到精通(PDF格式英文版)》第209章


creating with state; 347 Node。RootNodes shared data; 99 
deadlocks; 355 Nothing parameter; 328 
synchronizing between; 349–355 Nothing statement; 108 
waiting for end of; 346–347 Nothing value; 91 
MustInherit keyword; 139; 145 NotImplementedException type; 128 
MustOverride keyword; 157; 159–161 NotSupportedException exception; 127 
MyImplementation class; 314 NotSupportedException type; 129 
MyReferenceType type; 86 nullable types; 426 
MyReferenceType variable; 84 NullReferenceException exception; 127 
MyType。 MyType instance; 286 NullReferenceException type; 129 
MyType parameter; 300 number…related types; 25–49 
MyValueType type; 86 class libraries; 30–41 
MyValueType variable; 82 Add() method; 33 
MyValueTypeWithReferenceType variable; 84 numbers; puter understanding of;
40–41 
■N 
CLR numeric types; 43–45 
namespace; 31 objects; 56–59 
NameValueCollection type; 322 reference types; 42–43 
navigating user controls of solutions; 12 software development; 25–30 
nested data types; 226–227 focusing; 27–30 
generics; 285–312 organizing; 26 
assigning state without knowing type; value types; 42–43 
304–307 
numbers 
calculating averages; 308–311 
puter understanding of; 40–41 
defining interfaces; 292–302 
in different languages/cultures; 69–72 
designing architecture; 292 
NumberStyles enumerated values; 71 
need for; 285–288 
numeric data types; 44 
overriding ToString() functionality;
nvarchar(100) type; 381 
307–308 
…………………………………………………………Page 466……………………………………………………………
444 ■IN D E X 
■O Overridable base class method; 190 
object initialization; 214 Overridable keyword; 175; 190; 192 
Object Linking and Embedding; Database override functionality; 139 
(OLE DB); 375 Overrides keyword; 190; 192 
Object type; 286; 306; 324 overriding; 176 
object…oriented (OO) programming; 135–162 
■P 
currency converters; 152–157 
ActiveCurrencyTrader class; 152–155 ParameterName property;
IDbDataParameter type; 384 
HotelCurrencyTrader class; 155–157 
parameters; 85–86 
currency exchange application 
Parse() method; 70–71; 130–131 
organizing; 137 
partial classes; 150; 150–151; 427 
writing tests for; 137–152 
Partial keyword; 150; 151 
currency spreads; 136–137 
partial methods; 427 
MustOverride keyword; 159–161 
partial taxation; 164 
preprocessor directives; 157–159 
patch number; 334 
property scope; 159 
Peek() method; 247; 264 
objects; 56–59 
performance; 291 
objects variable; 231 
PeriodicIncrement() method; 364 
Object。ToString() method; 426 
persistence; 249–284 
ODBC (Open Database Connectivity); 375 
important stuff to remember; 283–284 
oldVersion attribute; 336 
organizing; 249–250 
OLE DB (Object Linking and Embedding;
Database); 375 person。Attributes variable; 419 
onHeap variable; 234 persons table; 380–381 
PersonWithAttributes attribute; 418 
onStack value…type variable; 234 
onStack variable; 234 piping data 
Open Database Connectivity (ODBC); 375 binary; 268–277 
OpenStandardOutput() method; 272 converting binary streams into text
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