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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】DevelopmentofInternettechnologyastheprogrammertoprovideabroaderspacefortheirskill.EarlierInternetApplicationsisthewordrefertothosewithFTPprotocoltodownloadfilesorbrowsetheHTMLpagetool,nowuseVisualBasic,notonlythedevelopmentofapplicationsfortheInternet,butalsotheintegrationofInternettechnologyaspartoflargescalesolutionsin.【KeyWords】InternetVisualBasicActiveXcomponentstechnologyprocedures.ThedevelopmentofInternettechnologyastheprogrammertoprovideabroaderspacefortheirskill.EarlierInternetApplicationsisthewordrefertothosewithFTPprotocoltodownloadfilesorbrowsetheHTMLpagetool,nowuseVisualBasic,notonlythedevelopmentofapplicationsfortheInternet,butalsotheintegrationofInternettechnologyaspartoflargescalesolution.HerethequestionstobediscussedistheuseofVisualBasictocreateapplicationsfortheInternetplayanimportantroleintheActiveXcomponent.Forexample,thecreationofActiveXcontrolscanbeusedforHTMLpagesthedevelopmentofActiveXdocumentscanbeusedinInternetbrowsersandothercomponentsintegratedtogetherandHTMLpagesotherActiveXcodecomponentsformerlyknownasOLEserver,canbedeployedtheclientorservercomputer,forbackgroundprocessing.A,InternetDevelopmentEnvironmentInternetistheuseofTCP/IPprotocol,aglobalnoncentralizedmanagementofcomputernetworks.Ifforthelocal,thesocalledInternetTechnologyandlocalLANcanbeusedinthesametechnology.Ontheonehand,Internettechnologydeveloperstoprovideaspacefortheirskill.IftheWebconnectionandtheuseofActiveXcomponents,althoughthespecificmethodstoachievedifferent,suchastheuseofHTMLandVBScriptcodeinordertoachievesecurity,butstillcallthemethod,setproperties,handleeventsandsoon.This,VBdevelopersofallknowledgeandskillshavebeenusedinInternetenvironment.Ontheotherhand,anextensionoftheapplicationofInternettechnologydevelopment.SuchasActiveXcomponentsandInternettechnologieshavethefollowingbenefitseasiertomaintainasaWebpartofthenecessarycomponentscanbedownloadedwithouttheuserrunasetupprogramtoupgradewillfeatureextendedtotheInternetthroughtheGeneralAgreement,theuserwillnotseeinbetweentheInternetandIntranetswitch.Second,Internetclient/serverCanuseclient/servertotesttherelationshipbetweentheInternetdevelopmentenvironment,clientandservercanhavestaticandthetwostates.Theactivitiesoftheclientortheservermaychangeitsinternalstateanddynamically,orrunascripttochangetheirbehaviorstaticclientortheserverisonlyincentivetorespondtotheoutsideworld.Internetdevelopment,includingfourcasesastaticandpassiveclientserverstaticclientserverandactivitiestheactivitiesoftheclientandtheserverstaticactivitiesandactivitiesoftheclientserver.Third,theuseofActiveXcomponentsWeb.ActiveXcomponentsforInternettechnologybringsnewfeatures.DownloadedthroughtheInternetcomponents,superconnected,themenufeaturesavarietyofconsultations,theActiveXcomponentsandInternetintegration,andcontentandapplicationshasbecomeincreasinglyblurredlinebetweenanothersiteduetointheclientandserverbetweenthedistributionfunction,youcancreateamorescalableandflexiblesite.InternetapplicationsintheuseofActiveXdocuments,canbedevelopedandtheInternet/IntranetsiteoftheotherelementsofthetightintegrationofVisualBasicapplications.Developedtheuseofthesecomponentsoftheapplication,userscantransparentlyintheHTMLpagesandActiveXdocumentsmigrationbetween.ActiveXdocumentscanbeasaVisualBasicapplicationfortheInternettoprovidealmoststandardnowtocompletetheworkoftheapplicationcanachieveusingActiveXdocuments.AsanHTMLpageelements,iftheusersclientdoesnotinstallActiveXdocuments,andcanbedownloadedfromtheInternetautomaticallyiftheclientontheolderversioncanalsobeautomaticallyupgraded.ActiveXdocumentprovidesmanyfeaturestoinstallandnavigationperformance,andtoensurecontinuedconsistencyInternetcomponentdownloadcancreatealinktotheActiveXdocument,sothatthebrowsercanautomaticallyfindanddownloadalltherequiredcomponents.Ultraconnectedobjectsinasuperconnectedpacketawarecontainer,youcanuseVisualBasictoconnectthesuperobjectpropertiesandmethods,JumptoagivenURLorthroughthenavigationhistorylist.MenuandconsultationasaresultcangetWordorExceldocument,VisualBasicprovidestheActiveXDocumentembeddingitsmenuinyourbrowsermenufunctions.Forexample,whenbeingloadedintothedocumentinInternetExplorer,thebrowsersmenuwillbecreatedwiththeActiveXdocumentmixedmenu.PropertyBagWheninInternetExplorerinthedeploymentofActiveXdocument,PropertyBagcanmaintaintheconsistencyofdataobjects.InInternetExplorerinthedeploymentofanActiveXdocumenttoHTMLpagethroughasuperconnectiontoconnecttotheActiveXdocument.1.TouseHTMLtocreatequoteconnecttheActiveXdocument.DocumentwillbeasaresultofActiveXinInternetExplorertoreplacetheHTMLpage,sotoOBJECTtagsoncomponentsofanotherHTMLpage.WhentheJumptothepage,oncetheActiveXdocumentisloaded,itwillimmediatelydisappear.2.UsingHTMLforthebrowseravailablefordownload,registrationandnavigationtothewaytheActiveXdocument.OBJECTtagintheActiveXdocumentshouldindicatethetypeofIDandtheCODEBASEattribute.3.Inthesamepage,InternetExplorerusingVBScriptinstructionsimmediatelythroughtheappropriatenavigationvbdfiletotheActiveXdocument.Fourth,intheInternetapplicationsuseActiveXcontrols.ActiveXcontrolforadynamicHTMLpagetheadoptionofHTMLandVBScript,inanHTMLpagecanuseActiveXcontrols,setitsproperties,callitsmethodsanditseventsacontrolthatcontainstheHTMLpageasifthedesignofaVisualBasicthewindow,ActiveXcontrolscanprovidemorevividandinteractiveuserinterfacefeaturestomakeHTMLpagesmoredynamic.GeneralHTMLandVBScriptbymeansofacomprehensivereferenceandcontrolthebehaviorofActiveXcontrols.TheuseofHTMLforthebrowseravailablefordownload,registrationandreferencechannelsquotedActiveXcontrols.HTMLcodeintheOBJECTtagtoinclude1.ControlthetypeofID,inordertoprocesstheregistryinWindowstofindthem2.IDattributesinordertoinvokethecontrolinVBScriptVisualBasicissimilartotheNameattribute3.CODEBASEattributetotellifthecomponentisnotthebrowserclienttofindwheretogo4.PARAMNAMElabel,setthepropertiesofthecontrolparameters.PreparedtodealwithandthenuseVBScriptcodeclickeventssothateachcontrolbyclick,theprogramcanbeusedforthecorrespondingaction.isualBasicProfessionalEditionalsoincludesthreepredesignedpackagesforcontrolofInternetrelatedtechnologies,toexpandexistingapplications,theyareInternetTransferControlthreeparcelsofcommonInternetprotocolHTTP,FTPandGopherWebBrowserControlincludesmanyavailablethroughtheInternetExplorerfeaturesWinSockControlcanconnecttoaremotemachine,andthenthroughtheUDPorTCPtoexchangedata.ThroughtheuseofthesecontrolscanbeaddedautomaticallyfromtheFTPsitetodownloadfiles,VisualBasicIDEcanalsoprovideWebbrowserAddin.InternetapplicationsintheuseofActiveXcodecomponents,whethertheclientortheserverside,youcanuseActiveXcodecomponentsdllorexefiles,soastoaddfeaturesHTMLpage.Thedeploymentofcodeontheclientcomponents,thereisnoneedasaresultofusercommandsaretransmittedoverthenetworkbacktotheserver,socangreatlyimprovethespeed.Serversidecomponentcanalsodisplaytheuserinterfacefunctionsofvisualelements.BydownloadingaDLL,canbeaddedintheHTMLpagetheuserinterfaceelements,suchasalogondialogboxalsoprovidebehindthescenesclientprocessingpower,suchasalibrarywithVBScript.AnotherDLLandInternettechnologywillbecombinedwiththewayitdeployedintheserverside.IfthereisInternetInformationServerIISincludedinWindowsNTServer4.0in,throughVisualBasiccustomsToolsdiskdirectoryOleisapi2dllinVisualBasictocallDLLbuiltinfunction.Oleisapi2dllcontainsallthefunctionsISAPI.DLLcanbedeployedintheHTTPserver,andHTMLpageinformationsenttocallitsmethods.Oleisapi2dllasaclient,therequesttotheinterfacebetweentheDLL.BasedonduetocodeHTML,theserequestsisonlyasimpleURL.ThroughserversideDLL,canprovidecustomerswithcustomizedparametersbacktotheclientsHTMLpage,butalsocanmanagethedatabaseconnection,therequesttoreceiveandreturntheresultsofthecollationandorganization.References1Chen.VisaulBasicProgrammingM.CentralRadioandTelevisionUniversityPress,2000.2JinMaozhong.NETProgrammingM.CentralRadioandTVPress,2004.3DingAIping.VisaulBasicProgramming2ndeditionM.PublishingHouseofElectronicsIndustry,2004.4WenyuanPavilionstudio.ReamweaverXM2004cheatextensionwithM.ChinaRailwayPublishingHouse,2005.

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