C# 简介毕业论文外文翻译文档格式.docx

C# 简介毕业论文外文翻译文档格式.docx

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1.1.1 TheBirthofC#

Asarecentbirthintheprogramminglanguagefamily#hastwoprogramminglanguageparents++andJava#containsmanyC++featuresbutalsoaddstheobject-orientedfeaturesfromJava.

C#containsmanydifferentcomponents,including:

• Versioningsupport,sothatyourbaseandderivedclasses-templatesthatdefinehowanobjectperforms一remaincompatibleasyoudevelopthem

• Events,sothatyourprogramcannotifyclientsofaclassaboutsomethingthathashappenedtoanobject

• Typesafetyandverificationthatincreasesreliabilityandensurescodesecurity

• Garbagecollection,sothatyourprogramcanidentityobjectsthatyourprogramcannolongerreach

• Unsafemode,whereyoucanusepointerstomanipulatememoryoutsidethegarbagecollector'

scontrol,includingmethodsandproperties

1.1.2 CloseRelationswithCandC++

C#isbuiltontheC++language,soitbehavesmuchlikethelanguage.LikeC++,C#letsyouwriteenterpriseapplications,andC#containsmanyC++features,includingstatementsandoperators.C#alsoprovidesaccesstocommonApplicationProgramInterface（API）stylesincludingComponentObjectModel（COM）andC-styleAPIs.

1.1.3 Security

ComputernetworksletprogrammersshareVisualStudio.NETcodeincludingC#programsacrossthenetwork.ThiscollaborativeeffortletsyouandyourprogrammingteamcreateC#programsmuchmorequicklythanonepersonalone.TheproblemwithcollaboratingoveranetworkisthatunauthorizedusersfromwithinoroutsideyournetworkmaytrytogainaccesstoyourC#programcode.

VisualStudio.NETprovidesbuilt-insecurityfeaturessoyouortheleaderofyourprogrammingteamcandeterminewhoonyournetworkgetsaccesstoyourC#programcodeandresources.Youcanalsosetdifferentlevelsofsecurityfordifferentpeopleincaseyouwantonlycertainpeopletohaveaccesstocertainprogramcode.

1.1.4 Integration

TheprimaryadvantageofusingVisualStudio.NETisthatalloftheprogramminglanguageshavebeendesignedtoworktogetherfromthestart.WhenyouwriteanewC#program,VisualStudio.NETgivesyoutoolsthatyoucanusetoprogramlinksfromyourC#programintoanotherprogramwritteninanotherVisualStudio.NETlanguage.

Forexample,youcancreateadatabaseinVisualFoxProandthencreateaC#programthatlinksintotheVisualFoxProdatabase.IfyouhavewrittenoracquiredcompletedprogramsinaVisualStudiolanguagesuchasVisualC++orVisualBasic,youcanincludelinksfromyourC#programintothoseprograms.Theendresultisseamlessintegratedfunctionalitybetweenprograms.

1.1.5 DifferencesBetweenC#andC++

MicrosoftincludesVisualC++andC#inVisualStudio.NET.Onthesurface#hasfewdifferencesfromVisualC++.Whenyoulookcarefullyandstartprogramming,youwillnoticethatC#differsinseveralimportantrespectsfromVisualC++:

• C#hasanalternatemethodofaccessingtheC++initializationlistwhenconstructingthebaseclass.

• Aclasscaninheritimplementationfromonlyonebaseclass.

• Youcancalloverriddenbaseclassmembersfromderivedclasses.

• C#hasadifferentsyntaxfordeclaringC#arrays.

• Therearedifferencesinseveraldifferenttypesincludingbool,struct,anddelegate.

• TheMainmethodisdeclareddifferently.

• Supportofthenewrefandoutmethodparametersthatareusedinsteadofpointersforpassingparametersbyreference.

• Newstatementsincludingswitchandfinally.

• Newoperatorsincludingisandtypeof.

• Differentfunctionalityforsomeoperatorsandforoverloadingoperators.

1.1.6 DLLs

TheadventofWindowsbroughtdynamiclinklibraries（DLLs）toprogrammers.DLLsaresmall,independentprogramsthatcontainexecutableroutinesthatprogramscanusetoproduceacertainresultinWindows.Forexample,ifaprogramneedstoopenafile,youcanwriteyourC#programthatusesthecodeintheDLLtoopenthefile.UsingDLLsfreesupyourtimetoworkonyourprogramwithouthavingtoreprogramthesamecodeinyourC#programoverandoveragain.

YoucanaccessDLLsfromyourC#program,andcreateDLLsinC#foryourC#foryourC#programtorefertowhennecessary.C#hasfullCOM/Platformsupport,soyoucanintegrateC#codewithanyprogramminglanguagethatcanproduceCOMDLLssuchasVisualC++.

1.1.7 XML

ExtensibleMarkupLanguage（XML）isamorepowerfulversionofHyperTextMarkupLanguage（HTML）,thestandardWebpagelanguage.VisualStudio.NETandC#letyoudocumentyourprogramusingXMLandthenextracttheXMLcodeintoaseparatefile.

VisualStudio.NETsupportsXMLsothatyoucanintegrateyourC#programswiththeWorldWideWeb.YoucandocumentyourC#codeusingXMLandthenuseXMLforcreatingWebServicesandWebcontrolsthatletyouandyourcodeinteractwithaWebsite.Forexample,youmayhaveaninventorysys