ASPNet培训.ppt

ASP.NETDevelopment,Agenda,WhatisASP.NET?WebFormsServerControlsStep2:CallDataBindSubPage_Load(sAsObject,eAsEventArgs)DataGrid1.DataBind()EndSub,BindingToTemplatedLists,Templatesenable“Lookless”UICustomizestructurenotjuststyleControlscanbenestedwithintemplatesRepeater,DataList,DataGridContainer:aliasfortheitemcreatedfromthetemplate+dataContainer.DataItem“thisrowofdata”,TemplatedListExample,SubPage_Load(sasObject,easEventArgs)DataList1.DataSource=GetCustData()DataList1.DataBind()EndSub,DataBinder.EvalMethod,Helpermethodforlate-bindingbefore:after:Optional3rdparamforformatting,ASP.NETDatabinding,demo,Agenda,WhatisASP.NET?WebFormsServerControls&UserControlsDatabindingASP.NETPagesASP.NETCachingASP.NETConfigurationASP.NETSecurityASP.NETApplicationsDeployingASP.NETWebApplications,PageOutputCaching,PagesthatdontchangefrequentlyDramaticperformanceincrease,FragmentCaching,DynamicportionsofapageDatadoesntchangefrequentlyUsercontrol,CacheAPIs,ProgrammaticallycachedataCache.Insert(_Key,_Value,_CacheDependency,_AbsoluteExpiration,_SlidingExpiration,_Priority,_PriorityDecay,_Callback),KeyStringusedtolookupthecacheditemValueItemorobjecttostoreinthecacheCacheDependencyCacheitemcanautomaticallyexpirewhenafile,directory,orothercacheitemchanges,CacheAPIs,AbsoluteExpirationCacheitemcanexpireatsomefixedtime.SlidingExpirationCacheitemcanexpireafteracertainamountofinactivityPriorityWhenforcingitemsfromthecache,whichitemsshouldgofirst,CacheAPIs,ASP.NETCache,demo,Agenda,WhatisASP.NET?WebFormsServerControls&UserControlsDatabindingASP.NETPagesASP.NETCachingASP.NETConfigurationASP.NETSecurityASP.NETApplicationsDeployingASP.NETWebApplications,Web.config,SiteconfigurationfileShipswiththesiteStoresmostconfigurationoptionsEasesmaintenanceanddeploymentChangestakeeffectimmediately,HierarchicalArchitecture,Web.configfilesandtheirsettingsareinheritedinahierarchyMachinesettings(WinntMicrosoft.NETVersion)WebapplicationrootdirectorySubdirectories,Settingscanbetargetedataspecifiedsetoffile/directorybyuseofthetag,HierarchicalArchitecture,DefaultConfigurationSettings,Machine.configTracingDisabledExecutiontimeout90secondsSessionstateEnabled,inprocAuthenticationAllowanonymousMultipleCPUsupportDisabled,CustomConfigurationSettings,ExamplesofcustomizationAppSettingsCustomErrorsTracesettingsAuthenticationSessionsettings,Customsettinginweb.configAccessingwithcodeDSN=ConfigurationSettings.AppSettings(DSN),AppSettings,Redirectcertainerrorstocertainpages,CustomErrors,TraceConfigurationWritingtotracelogTrace.Write(Page_Load,EnteringEvent)Trace.Warn(“Login,InvalidArgument),Tracing,Tracing,EnabledTracinginformationwillbestored.Informationcanbeaccessedthrough“http:/site/trace.axd”RequestLimitStoretracinginformationforthismanyrequestsPageOutputAllowstraceoutputtoalsoappearatthebottomofthepageTraceModeAllowstraceinformationtobesortedbytimeorcategory,ASP.NETConfiguration,demo,Agenda,WhatisASP.NET?WebFormsServerControls&UserControlsDatabindingASP.NETPagesASP.NETCachingASP.NETConfigurationASP.NETSecurityASP.NETApplicationsDeployingASP.NETWebApplications,SecurityConcepts,AuthenticationAuthorizationImpersonation,Authentication,WindowsBasicDigestIntegratedFormPassport,WindowsAuthentication,EnabledforIISthroughInternetServicesManager,EnabledforASP.NETthroughweb.config,WindowsAuthentication,SitecaneasilyaccessusernameDimUserNameAsStringUserName=User.Identity.NameNTgroupsautomaticallymaptoASP.NETrolesIfUser.IsInRole(Administrators)Then,WindowsAuthentication,Websiteisresponsibleforsecurity,notIISConfigureIIStoallowanonymousaccessSetweb.configtoforceuserstoauthenticatethroughaformAnyunauthenticateduserwillgetsenttoLogin.aspx,FormAuthentication,YoucodeaformtocollectuserIDandpasswordAfterauthenticateauser:FormAuthentication.RedirectFromLoginPage(UserName,False)RedirectFromLoginPageMarkstheuserasauthenticatedTakestheusertothepagetheyoriginallyrequestedIftheuserrequestedtheloginpage,takestheusertodefault.aspxCanpersistauthenticationinacookie,FormAuthentication,DeclarativeFormAuthentication,Forsimplesites,youcanstoreuserIDandpasswordinweb.configUserisauthenticatedbycallingFormsAuthentication.Authenticate(UserName,Password),ProgrammaticFormAuthentication,CodeisusedtoauthenticatetheuserIfUserFoundInDataBasethenFormAuthentication.RedirectFromLoginPage(UserName,false)ElselblLoginError.Text=UserNotFoundorInvalidPasswordendif,RoleBasedSecurity,Jane,Jill,John,Jenny,Jamie,RD,Admins,PageRDContent,AdminContent,ProgrammaticallyassigninguserstorolesSubApplication_AuthenticateRequest(ByValSenderAsObject,ByValeAsEventArgs)Ifrequest.IsAuthenticated=TrueThensql=selectrolefromroleswhereuserid=&UserID&GetRolesfromResultSetcontext.User=NewGenericPrincipal(user,roles)EndIfEndSub,RoleBasedSecurity,DisplaycontentbasedonrolesIfUser.IsInRole(HumanRes)ThencmdEditSalary.Visible=trueEndIf,RoleBasedSecurity,Impersonation,Windowsauthenticationweb.config,ASP.NETSecurity,demo,Agenda,WhatisASP.NET?WebFormsServerControls&UserControlsDatabindingASP.NETPagesASP.NETCachingASP.NETConfigurationASP.NETSecurityASP.NETApplicationsDeployingASP.NETWebApplications,Application_OnStartApplication_OnEndSession_OnStartSession_OnEnd,TraditionalASP(Global.asa),ASP.NETGlobal.asax,FirstrequestApplication_StartFirstrequestforeachuserSession_StartEachrequestApplication_BeginRequestApplication_AuthenticateApplication_EndRequestApplicationerrorApplication_ErrorUserlogsout/sessiontimesoutSession_EndWebservershutdownApplication_End,Application_BeginRequestTexttobeincludedatthestartofeverypageApplication_EndRequestTexttobeaddedtotheendofeverypageApplication_ErrorUsefulforsendingoutane-mailorwritingtotheeventlogwhenanerroroccursthatwasnotproperlyhandledatthesourceoftheerror,Global.asaxEventUsage,Session_EndWritingtoalogfileordatabasethatauserhasloggedoutatagiventimeApplication_EndUsefulforwritingoutwhentheWebapplicationhadtostop.CouldwriteanentryouttotheeventlogApplication_StartUsefulforloadedsitespecificconfigurationinformation,Global.asaxEventUsage,EssentiallyglobalvariablesfortheapplicationApplication(CompanyName)CanlockorunlockapplicationstatevariablesApplication.lockApplication(GlobalCounter)=NewValueApplication.unlock,SavingApplicationState,Per-uservariablesAvailabletoallpagesinthesiteSession(UserID)=5UserID=Session(UserID),SavingSessionState,ASPsessionstateDependentoncookiesNotfaulttolerantASP.NETsessionstateSupportforWebgardensandserverfarmsDoesntrequirecookiesBetterfaulttolerance-Proc,StateServer,SQLServer,ASPvs.ASP.NETSessionState,Configurationinformationstoredinweb.config,ConfiguringSessionState,ModeInProcConventionalsessionvariables,storedinmemoryontheWebserverStateserverSessionsarestoredonanexternalserver,inmemorySQLServerSessionsarestoredinaSQLdatabaseCookielessDeterminesifcookielesssessionsshouldbeusedValuesaretrueorfalseTimeOutDeterminesthedefaulttimeoutfortheWebsite,ConfiguringSessionState,SQLConnectionStringContainsthedatasource,userid,andpasswordparametersnecessarytoconnecttoaSQLdatabasethatholdsthesessionstatestateConnectionStringContainsinformationneededtoconnecttothestateserver,ConfiguringSessionState,YoumustrunasmallT-SQLscriptonthetargetserverInstallSQLState.sqlwhichcanbefoundinsysdrivewinntMicrosoft.NETFr