c# how to program47_1

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1、csphtp1.bookPage1467Wednesday,November21,200112:48PMAppendixLIntroductiontoXHTML:Part2146742Enteryourcommentshere.4445

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5、bookPage1468Wednesday,November21,200112:48PM1468IntroductiontoXHTML:Part2AppendixLFig.L.4Formwithtextareas,passwordboxesandcheckboxes.(Part3of3.)CommonProgrammingErrorL.3Whenyourformhasseveralcheckboxeswiththesamename,youmustmakesurethattheyhavedifferentvalues,orthescr

6、iptsrunningontheWebserverwillnotbeabletodistin-guishbetweenthem.L.3Wecontinueourdiscussionofformsbypresentingathirdexamplethatintroducessev-eralmoreformelementsfromwhichuserscanmakeselections(Fig.L.5).Inthisexample,csphtp1.bookPage1469Wednesday,November21,200112:48PMAp

7、pendixLIntroductiontoXHTML:Part21469weintroducetwonewinputtypes.Thefirsttypeistheradiobutton(lines90–113),speci-fiedwithtype"radio".Radiobuttonsaresimilartocheckboxes,exceptthatonlyoneradiobuttoninagroupofradiobuttonsmaybeselectedatanytime.Allradiobuttonsinagrouphaveth

8、esamenameattribute;theyaredistinguishedbytheirdifferentvalueattributes.Theattribute–valuepairchecked="checked"(line92