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外文翻译--用VB构建INTERNET的应用.doc

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外文翻译--用VB构建INTERNET的应用.doc

INTERNETUSEDTOBUILDVBAPPLICATIONS【ABSTRACT】DEVELOPMENTOFINTERNETTECHNOLOGYASTHEPROGRAMMERTOPROVIDEABROADERSPACEFORTHEIRSKILLEARLIERINTERNETAPPLICATIONSISTHEWORDREFERTOTHOSEWITHFTPPROTOCOLTODOWNLOADFILESORBROWSETHEHTMLPAGETOOL,NOWUSEVISUALBASIC,NOTONLYTHEDEVELOPMENTOFAPPLICATIONSFORTHEINTERNET,BUTALSOTHEINTEGRATIONOFINTERNETTECHNOLOGYASPARTOFLARGESCALESOLUTIONSIN【KEYWORDS】INTERNET;VISUALBASIC;ACTIVEXCOMPONENTS;TECHNOLOGY;PROCEDURESTHEDEVELOPMENTOFINTERNETTECHNOLOGYASTHEPROGRAMMERTOPROVIDEABROADERSPACEFORTHEIRSKILLEARLIERINTERNETAPPLICATIONSISTHEWORDREFERTOTHOSEWITHFTPPROTOCOLTODOWNLOADFILESORBROWSETHEHTMLPAGETOOL,NOWUSEVISUALBASIC,NOTONLYTHEDEVELOPMENTOFAPPLICATIONSFORTHEINTERNET,BUTALSOTHEINTEGRATIONOFINTERNETTECHNOLOGYASPARTOFLARGESCALESOLUTIONHERETHEQUESTIONSTOBEDISCUSSEDISTHEUSEOFVISUALBASICTOCREATEAPPLICATIONSFORTHEINTERNETPLAYANIMPORTANTROLEINTHEACTIVEXCOMPONENTFOREXAMPLE,THECREATIONOFACTIVEXCONTROLSCANBEUSEDFORHTMLPAGES;THEDEVELOPMENTOFACTIVEXDOCUMENTSCANBEUSEDININTERNETBROWSERSANDOTHERCOMPONENTSINTEGRATEDTOGETHERANDHTMLPAGES;OTHERACTIVEXCODECOMPONENTSFORMERLYKNOWNASOLESERVER,CANBEDEPLOYEDTHECLIENTORSERVERCOMPUTER,FORBACKGROUNDPROCESSINGA,INTERNETDEVELOPMENTENVIRONMENTINTERNETISTHEUSEOFTCP/IPPROTOCOL,AGLOBALNONCENTRALIZEDMANAGEMENTOFCOMPUTERNETWORKSIFFORTHELOCAL,THESOCALLEDINTERNETTECHNOLOGYANDLOCALLANCANBEUSEDINTHESAMETECHNOLOGYONTHEONEHAND,INTERNETTECHNOLOGYDEVELOPERSTOPROVIDEASPACEFORTHEIRSKILLIFTHEWEBCONNECTIONANDTHEUSEOFACTIVEXCOMPONENTS,ALTHOUGHTHESPECIFICMETHODSTOACHIEVEDIFFERENT,SUCHASTHEUSEOFHTMLANDVBSCRIPTCODEINORDERTOACHIEVESECURITY,BUTSTILLCALLTHEMETHOD,SETPROPERTIES,HANDLEEVENTSANDSOONTHIS,VBDEVELOPERSOFALLKNOWLEDGEANDSKILLSHAVEBEENUSEDININTERNETENVIRONMENTONTHEOTHERHAND,ANEXTENSIONOFTHEAPPLICATIONOFINTERNETTECHNOLOGYDEVELOPMENTSUCHASACTIVEXCOMPONENTSANDINTERNETTECHNOLOGIESHAVETHEFOLLOWINGBENEFITSEASIERTOMAINTAINASAWEBPARTOFTHENECESSARYCOMPONENTSCANBEDOWNLOADEDWITHOUTTHEUSERRUNASETUPPROGRAMTOUPGRADE;WILLFEATUREEXTENDEDTOTHEINTERNETTHROUGHTHEGENERALAGREEMENT,THEUSERWILLNOTSEEINBETWEENTHEINTERNETANDINTRANETSWITCHSECOND,INTERNETCLIENT/SERVERCANUSECLIENT/SERVERTOTESTTHERELATIONSHIPBETWEENTHEINTERNETDEVELOPMENTENVIRONMENT,CLIENTANDSERVERCANHAVESTATICANDTHETWOSTATESTHEACTIVITIESOFTHECLIENTORTHESERVERMAYCHANGEITSINTERNALSTATEANDDYNAMICALLY,ORRUNASCRIPTTOCHANGETHEIRBEHAVIOR;STATICCLIENTORTHESERVERISONLYINCENTIVETORESPONDTOTHEOUTSIDEWORLDINTERNETDEVELOPMENT,INCLUDINGFOURCASESASTATICANDPASSIVECLIENTSERVER;STATICCLIENTSERVERANDACTIVITIES;THEACTIVITIESOFTHECLIENTANDTHESERVERSTATIC;ACTIVITIESANDACTIVITIESOFTHECLIENTSERVERTHIRD,THEUSEOFACTIVEXCOMPONENTSWEBACTIVEXCOMPONENTSFORINTERNETTECHNOLOGYBRINGSNEWFEATURESDOWNLOADEDTHROUGHTHEINTERNETCOMPONENTS,SUPERCONNECTED,THEMENUFEATURESAVARIETYOFCONSULTATIONS,THEACTIVEXCOMPONENTSANDINTERNETINTEGRATION,ANDCONTENTANDAPPLICATIONSHASBECOMEINCREASINGLYBLURREDLINEBETWEEN;ANOTHERSITEDUETOINTHECLIENTANDSERVERBETWEENTHEDISTRIBUTIONFUNCTION,YOUCANCREATEAMORESCALABLEANDFLEXIBLESITEINTERNETAPPLICATIONSINTHEUSEOFACTIVEXDOCUMENTS,CANBEDEVELOPEDANDTHEINTERNET/INTRANETSITEOFTHEOTHERELEMENTSOFTHETIGHTINTEGRATIONOFVISUALBASICAPPLICATIONSDEVELOPEDTHEUSEOFTHESECOMPONENTSOFTHEAPPLICATION,USERSCANTRANSPARENTLYINTHEHTMLPAGESANDACTIVEXDOCUMENTSMIGRATIONBETWEENACTIVEXDOCUMENTSCANBEASAVISUALBASICAPPLICATIONFORTHEINTERNETTOPROVIDEALMOSTSTANDARDNOWTOCOMPLETETHEWORKOFTHEAPPLICATIONCANACHIEVEUSINGACTIVEXDOCUMENTSASANHTMLPAGEELEMENTS,IFTHEUSERSCLIENTDOESNOTINSTALLACTIVEXDOCUMENTS,ANDCANBEDOWNLOADEDFROMTHEINTERNETAUTOMATICALLY;IFTHECLIENTONTHEOLDERVERSIONCANALSOBEAUTOMATICALLYUPGRADEDACTIVEXDOCUMENTPROVIDESMANYFEATURESTOINSTALLANDNAVIGATIONPERFORMANCE,ANDTOENSURECONTINUEDCONSISTENCYINTERNETCOMPONENTDOWNLOADCANCREATEALINKTOTHEACTIVEXDOCUMENT,SOTHATTHEBROWSERCANAUTOMATICALLYFINDANDDOWNLOADALLTHEREQUIREDCOMPONENTSULTRACONNECTEDOBJECTSINASUPERCONNECTEDPACKETAWARECONTAINER,YOUCANUSEVISUALBASICTOCONNECTTHESUPEROBJECTPROPERTIESANDMETHODS,JUMPTOAGIVENURLORTHROUGHTHENAVIGATIONHISTORYLISTMENUANDCONSULTATIONASARESULTCANGETWORDOREXCELDOCUMENT,VISUALBASICPROVIDESTHEACTIVEXDOCUMENTEMBEDDINGITSMENUINYOURBROWSERMENUFUNCTIONSFOREXAMPLE,WHENBEINGLOADEDINTOTHEDOCUMENTININTERNETEXPLORER,THEBROWSERSMENUWILLBECREATEDWITHTHEACTIVEXDOCUMENTMIXEDMENUPROPERTYBAGWHENININTERNETEXPLORERINTHEDEPLOYMENTOFACTIVEXDOCUMENT,PROPERTYBAGCANMAINTAINTHECONSISTENCYOFDATAOBJECTSININTERNETEXPLORERINTHEDEPLOYMENTOFANACTIVEXDOCUMENTTOHTMLPAGETHROUGHASUPERCONNECTIONTOCONNECTTOTHEACTIVEXDOCUMENT1TOUSEHTMLTOCREATEQUOTECONNECTTHEACTIVEXDOCUMENTDOCUMENTWILLBEASARESULTOFACTIVEXININTERNETEXPLORERTOREPLACETHEHTMLPAGE,SOTOOBJECTTAGSONCOMPONENTSOFANOTHERHTMLPAGEWHENTHEJUMPTOTHEPAGE,ONCETHEACTIVEXDOCUMENTISLOADED,ITWILLIMMEDIATELYDISAPPEAR2USINGHTMLFORTHEBROWSERAVAILABLEFORDOWNLOAD,REGISTRATIONANDNAVIGATIONTOTHEWAYTHEACTIVEXDOCUMENTOBJECTTAGINTHEACTIVEXDOCUMENTSHOULDINDICATETHETYPEOFIDANDTHECODEBASEATTRIBUTE3INTHESAMEPAGE,INTERNETEXPLORERUSINGVBSCRIPTINSTRUCTIONSIMMEDIATELYTHROUGHTHEAPPROPRIATENAVIGATIONVBDFILETOTHEACTIVEXDOCUMENTFOURTH,INTHEINTERNETAPPLICATIONSUSEACTIVEXCONTROLSACTIVEXCONTROLFORADYNAMICHTMLPAGETHEADOPTIONOFHTMLANDVBSCRIPT,INANHTMLPAGECANUSEACTIVEXCONTROLS,SETITSPROPERTIES,CALLITSMETHODSANDITSEVENTS;ACONTROLTHATCONTAINSTHEHTMLPAGEASIFTHEDESIGNOFAVISUALBASICTHEWINDOW,ACTIVEXCONTROLSCANPROVIDEMOREVIVIDANDINTERACTIVEUSERINTERFACEFEATURESTOMAKEHTMLPAGESMOREDYNAMICGENERALHTMLANDVBSCRIPTBYMEANSOFACOMPREHENSIVEREFERENCEANDCONTROLTHEBEHAVIOROFACTIVEXCONTROLSTHEUSEOFHTMLFORTHEBROWSERAVAILABLEFORDOWNLOAD,REGISTRATIONANDREFERENCECHANNELSQUOTEDACTIVEXCONTROLSHTMLCODEINTHEOBJECTTAGTOINCLUDE1CONTROLTHETYPEOFID,INORDERTOPROCESSTHEREGISTRYINWINDOWSTOFINDTHEM;2IDATTRIBUTESINORDERTOINVOKETHECONTROLINVBSCRIPTVISUALBASICISSIMILARTOTHENAMEATTRIBUTE;3CODEBASEATTRIBUTETOTELLIFTHECOMPONENTISNOTTHEBROWSERCLIENTTOFINDWHERETOGO;4PARAMNAMELABEL,SETTHEPROPERTIESOFTHECONTROLPARAMETERSPREPAREDTODEALWITHANDTHENUSEVBSCRIPTCODECLICKEVENTSSOTHATEACHCONTROLBYCLICK,THEPROGRAMCANBEUSEDFORTHECORRESPONDINGACTIONISUALBASICPROFESSIONALEDITIONALSOINCLUDESTHREEPREDESIGNEDPACKAGESFORCONTROLOFINTERNETRELATEDTECHNOLOGIES,TOEXPANDEXISTINGAPPLICATIONS,THEYAREINTERNETTRANSFERCONTROLTHREEPARCELSOFCOMMONINTERNETPROTOCOLHTTP,FTPANDGOPHER;WEBBROWSERCONTROLINCLUDESMANYAVAILABLETHROUGHTHEINTERNETEXPLORERFEATURES;WINSOCKCONTROLCANCONNECTTOAREMOTEMACHINE,ANDTHENTHROUGHTHEUDPORTCPTOEXCHANGEDATATHROUGHTHEUSEOFTHESECONTROLSCANBEADDEDAUTOMATICALLYFROMTHEFTPSITETODOWNLOADFILES,VISUALBASICIDECANALSOPROVIDEWEBBROWSERADDININTERNETAPPLICATIONSINTHEUSEOFACTIVEXCODECOMPONENTS,WHETHERTHECLIENTORTHESERVERSIDE,YOUCANUSEACTIVEXCODECOMPONENTSDLLOREXEFILES,SOASTOADDFEATURESHTMLPAGETHEDEPLOYMENTOFCODEONTHECLIENTCOMPONENTS,THEREISNONEEDASARESULTOFUSERCOMMANDSARETRANSMITTEDOVERTHENETWORKBACKTOTHESERVER,SOCANGREATLYIMPROVETHESPEEDSERVERSIDECOMPONENTCANALSODISPLAYTHEUSERINTERFACEFUNCTIONSOFVISUALELEMENTSBYDOWNLOADINGADLL,CANBEADDEDINTHEHTMLPAGETHEUSERINTERFACEELEMENTS,SUCHASALOGONDIALOGBOX;ALSOPROVIDEBEHINDTHESCENESCLIENTPROCESSINGPOWER,SUCHASALIBRARYWITHVBSCRIPTANOTHERDLLANDINTERNETTECHNOLOGYWILLBECOMBINEDWITHTHEWAYITDEPLOYEDINTHESERVERSIDEIFTHEREISINTERNETINFORMATIONSERVERIISINCLUDEDINWINDOWSNTSERVER40IN,THROUGHVISUALBASICCUSTOMSTOOLSDISKDIRECTORYOLEISAPI2DLLINVISUALBASICTOCALLDLLBUILTINFUNCTIONOLEISAPI2DLLCONTAINSALLTHEFUNCTIONSISAPIDLLCANBEDEPLOYEDINTHEHTTPSERVER,ANDHTMLPAGEINFORMATIONSENTTOCALLITSMETHODSOLEISAPI2DLLASACLIENT,THEREQUESTTOTHEINTERFACEBETWEENTHEDLLBASEDONDUETOCODEHTML,THESEREQUESTSISONLYASIMPLEURLTHROUGHSERVERSIDEDLL,CANPROVIDECUSTOMERSWITHCUSTOMIZEDPARAMETERSBACKTOTHECLIENTSHTMLPAGE,BUTALSOCANMANAGETHEDATABASECONNECTION,THEREQUESTTORECEIVEANDRETURNTHERESULTSOFTHECOLLATIONANDORGANIZATIONREFERENCES1CHENVISAULBASICPROGRAMMINGMCENTRALRADIOANDTELEVISIONUNIVERSITYPRESS,20002JINMAOZHONGNETPROGRAMMINGMCENTRALRADIOANDTVPRESS,20043DINGAIPINGVISAULBASICPROGRAMMING2NDEDITIONMPUBLISHINGHOUSEOFELECTRONICSINDUSTRY,20044WENYUANPAVILIONSTUDIOREAMWEAVERXM2004CHEATEXTENSIONWITHMCHINARAILWAYPUBLISHINGHOUSE,2005

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