Preparing Your Visual Basic 6.0 Applications for the Upgrade_英文文献资料.doc

《Preparing Your Visual Basic 6.0 Applications for the Upgrade_英文文献资料.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、英文资料PreparingYourVisualBasic6.0ApplicationsfortheUpgradetoVisualBasic.NETOverviewThisdocumentprovidesrecommendationsfordevelopersusingMicrosoft®VisualBasic®whoareplanningtoupgradetheirapplicationstoMicrosoftVisualBasic.NET.VisualBasic.NETwillopenandupgradeVisualBasic6.0proj

2、ectstoVisualBasic.NETtechnologies,butinmostcasesyouwillneedtomakesomemodificationstoyourprojectsafterbringingthemintoVisualBasic.NET.ThepurposeofthisdocumentistorecommendhowtodesignandimplementyourcurrentVisualBasicprojectstominimizethenumberofchangesyouwillneedtomakewhenth

3、eyareupgradedtoVisualBasic.NET.Whereappropriate,weusenewlanguageconstructs;however,thisdocumentisnotintendedtobeaVisualBasic.NETlanguagereference.WhatIsVisualBasic.NET?VisualBasic.NETisthenextversionofVisualBasic.RatherthansimplyaddingsomenewfeaturestoVisualBasic6.0,Microso

4、fthasreengineeredtheproducttomakeiteasierthaneverbeforetowritedistributedapplicationssuchasWebandenterprisen-tiersystems.VisualBasic.NEThastwonewformspackages(WindowsFormsandWebForms);anewversionofADOforaccessingdisconnecteddatasources;andstreamlinedlanguage,removinglegacyk

5、eywords,improvingtypesafety,andexposinglow-levelconstructsthatadvanceddevelopersrequire.ThesenewfeaturesopennewdoorsfortheVisualBasicdeveloper:WithWebFormsandADO.NET,youcannowrapidlydevelopscalableWebsites;withinheritance,thelanguagenowtrulysupportsobject-orientedprogrammin

6、g;WindowsFormsnativelysupportsaccessibilityandvisualinheritance;anddeployingyourapplicationsisnowassimpleascopyingyourexecutablesandcomponentsfromdirectorytodirectory.VisualBasic.NETisnowfullyintegratedwiththeotherMicrosoftVisualStudio.NETlanguages.Notonlycanyoudevelopappli

7、cationcomponentsin-11-英文资料differentprogramminglanguages,yourclassescannowinheritfromclasseswritteninotherlanguagesusingcross-languageinheritance.Withtheunifieddebugger,youcannowdebugmultiplelanguageapplications,irrespectiveofwhethertheyarerunninglocallyoronremotecomputers.F

8、inally,whateverlanguageyouuse,theMicrosoft.NETFrameworkprovidesarichsetofAPIsforMi