cs state management

7/24/2019 Cs State Management

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StateState

ManagementManagement


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AgendaAgenda

View stateView state

Application cacheApplication cache

Session stateSession stateProflesProfles

CookiesCookies


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View StateView State

Mechanism or persisting relativelyMechanism or persisting relativelysmall pieces o data across postbackssmall pieces o data across postbacks

Used by pages and controls to persistUsed by pages and controls to persist

statestateAlso available to you or persisting stateAlso available to you or persisting state

elies on hidden input feldelies on hidden input feld

!""V#$%S&A&$'!""V#$%S&A&$'Accessed through ViewState propertyAccessed through ViewState property

&amper(proo) optionally encryptable&amper(proo) optionally encryptable


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eading and %riting Vieweading and %riting ViewStateState// Write the price of an item to view stateViewState["Price"] = price;

// Read the price back followin a postbackdecimal price = !decimal ViewState["Price"];


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View State and *ata &ypesView State and *ata &ypes

%hat data types can you store in view%hat data types can you store in viewstate+state+

Primitive types !strings, integers, etc-'Primitive types !strings, integers, etc-'

&ypes accompanied by type converters&ypes accompanied by type converters

Seriali.able types !types compatible withSeriali.able types !types compatible with/inary0ormatter'/inary0ormatter'

System-%eb-U#-1os0ormatterSystem-%eb-U#-1os0ormatterperorms seriali.ation andperorms seriali.ation anddeseriali.ationdeseriali.ation

2ptimi.ed or compact storage o strings,2ptimi.ed or compact storage o strings,integers, booleans, arrays, and hashintegers, booleans, arrays, and hash


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Application CacheApplication Cache

#ntelligent in(memory data store#ntelligent in(memory data store

#tem prioriti.ation and automatic eviction#tem prioriti.ation and automatic eviction

&ime(based e3piration and cache&ime(based e3piration and cachedependenciesdependencies

Cache removal callbacksCache removal callbacks

Application scope !available to allApplication scope !available to all

users'users'Accessed through Cache propertyAccessed through Cache property

Page-Cache ( ASP4Page-Cache ( ASP4

5ttpConte3t-Cache ( 6lobal-asa35ttpConte3t-Cache ( 6lobal-asa3


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Using the ApplicationUsing the ApplicationCacheCache// Write a #ashtable containin stock prices to the cache// Write a #ashtable containin stock prices to the cache#ashtable stocks = new #ashtable !;stocks$%dd !"%&'(") *+$++m;stocks$%dd !",(-.") +$++m;stocks$%dd !"&S0-") 1+$++m;.ache$,nsert !"Stocks") stocks; $

$ $// 0etch the price of &icrosoft stock#ashtable stocks = !#ashtable .ache["Stocks"];if !stocks 2= n3ll // ,mportant2 decimal msft = !decimal stocks["&S0-"]; $

$ $// Remove the #ashtable from the cache.ache$Remove !"Stocks";


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Cache-#nsertCache-#nsert

p3blic void ,nsert ! strin ke4) // 5e4 that identifies item ob6ect val3e) // -he item itself .ache7ependenc4 dependencies) // .ache dependencies !if an4 7ate-ime absol3te89piration) // When sho3ld item e9pire !absol3te: -imeSpan slidin89piration) // When sho3ld item e9pire !slidin: .ache,temPriorit4 priorit4) // ,tems priorit4 relative to other items

.ache,temRemoved.allback onRemove.allback // Removal callback deleate;


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&emporal $3piration&emporal $3piration

.ache$,nsert !"Stocks") stocks) n3ll) 7ate-ime$(ow$%dd&in3tes !


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Cache *ependenciesCache *ependencies

.ache$,nsert !"Stocks") stocks) new .ache7ependenc4 !Server$&apPath !"Stocks$9ml";

.ache$,nsert !"Stocks") stocks) new Sl.ache7ependenc4 !"Stocks") "Prices";

Expire if and when Stocks.xmlchanges

Expire if and when the"Stocks" database's

"Prices" table changes


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Application CacheApplication Cache


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Session StateSession State

ead7write per(user data storeead7write per(user data store

Accessed through Session propertyAccessed through Session property

Page-Session ( ASP4Page-Session ( ASP45ttpApplication-Session ( 6lobal-asa35ttpApplication-Session ( 6lobal-asa3

Provider(based or 8e3ible dataProvider(based or 8e3ible datastoragestorage

#n(process !deault'#n(process !deault'

State server processState server process

S91 ServerS91 Server

Cookied or cookielessCookied or cookieless


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Using Session StateUsing Session State

// Write a Shoppin.art ob6ect to session stateShoppin.art cart = new Shoppin.art !;Session[".art"] = cart; $ $ $// Read this 3sers Shoppin.art from session state

Shoppin.art cart = !Shoppin.art Session[".art"]; $ $ $// Remove this 3sers Shoppin.art from session stateSession$Remove !".art";


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#n(Process Session State#n(Process Session State

>2?? Web$confi ??@>confi3ration@ >s4stem$web@ >sessionState mode=",nProc"/@ $$$ >/s4stem$web@>/confi3ration@

Web Server

ASP-:$& Session StateSession state storedinside

ASP.E!'s workerprocess


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State Server Session StateState Server Session State

>2?? Web$confi ??@>confi3ration@ >s4stem$web@ >sessionState mode="StateServer" state.onnectionStrin="tcpip=A$*


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S91 Server Session StateS91 Server Session State

>2?? Web$confi ??@>confi3ration@ >s4stem$web@ >sessionState mode="SEFServer" sl.onnectionStrin="server=orion;interated sec3rit4=tr3e"/@ $$$ >/s4stem$web@

>/confi3ration@

Web Server

ASP-:$&

Database

Server

ASPState*atabase

&reated withnstallS(lState.s(l ornstallPersistS(l

$State.s(l


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Session $ventsSession $vents

Session"Start event signals newSession"Start event signals newsessionsession

Session"$nd event signals end oSession"$nd event signals end osessionsession

Process with handlers in 6lobal-asa3Process with handlers in 6lobal-asa3void SessionGStart !H // .reate a shoppin cart and store it in session state // each time a new session is started Session[".art"] = new Shoppin.art !;

I

void SessionG8nd !H // 7o an4 clean3p here when session endsI


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Session &ime(2utsSession &ime(2uts

Sessions end when predeterminedSessions end when predeterminedtime period elapses without anytime period elapses without anyre;uests rom session? minutes

&ime(out can be changed in&ime(out can be changed in%eb-confg%eb-confg

>2?? Web$confi ??@

>confi3ration@ >s4stem$web@ >sessionState timeo3t="J+" /@ $$$ >/s4stem$web@>/confi3ration@


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Profle ServiceProfle Service

Stores per(user dataStores per(user data persistentlypersistently

Strongly typed access !unlike sessionStrongly typed access !unlike sessionstate'state'

2n(demand lookup !unlike session state'2n(demand lookup !unlike session state'

1ong(lived !unlike session state'1ong(lived !unlike session state'

Supports authenticated and anonymousSupports authenticated and anonymous

usersusersAccessed through dynamicallyAccessed through dynamicallycompiled 5ttpProfle/ase derivativescompiled 5ttpProfle/ase derivatives!5ttpProfle'!5ttpProfle'

Provider(based or 8e3ible dataProvider(based or 8e3ible data


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Profle SchemaProfle Schema

Profles

Profle Data

Stores

S91 Server2ther

*ata Stores

5ttpProfle/ase

5ttpProfle !Autogenerated5ttpProfle/ase(*erivative'

AccessProfleProvider 2ther Providers

Profle Providers

S;lProfleProvider

Access

5ttpProfle !Autogenerated5ttpProfle/ase(*erivative'


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*efning a Profle*efning a Profle

>confi3ration@ >s4stem$web@ >profile@ >properties@ >add name="Screen(ame" /@ >add name="Posts" t4pe="S4stem$,nt1" defa3ltVal3e="+" /@ >add name="FastPost" t4pe="S4stem$7ate-ime" /@

>/properties@ >/profile@ >/s4stem$web@>/confi3ration@


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Using a ProfleUsing a Profle

// ,ncrement the c3rrent 3sers post co3ntProfile$Posts = Profile$Posts K *;

// Lpdate the c3rrent 3sers last post dateProfile$FastPost = 7ate-ime$(ow;


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5ow Profles %ork5ow Profles %ork

p3blic partial class paeGasp9 D S4stem$Web$L,$PaeH $$$ protected %SP$#ttpProfile Profile H et H ret3rn !!%SP$#ttpProfile!this$.onte9t$Profile; I I $$$I

Autogenerated classrepresenting the page

Autogenerated classderivedfrom )ttpPro*le+ase

Pro*le propert,included inautogenerated pageclass


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Profle 6roupsProfle 6roups

Properties can be groupedProperties can be grouped

@group element defnes groups@group element defnes groups

>profile@ >properties@ >add $$$ /@ $$$ >ro3p name="$$$"@ >add $$$ /@ $$$

>/ro3p@ >/properties@>/profile@


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*efning a Profle 6roup*efning a Profle 6roup

>confi3ration@ >s4stem$web@ >profile@ >properties@ >add name="Screen(ame" /@ >ro3p name="0or3ms"@ >add name="Posts" t4pe="S4stem$,nt1" defa3ltVal3e="+" /@

>add name="FastPost" t4pe="S4stem$7ate-ime" /@ >/ro3p@ >/properties@ >/profile@ >/s4stem$web@>/confi3ration@


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Accessing a Profle 6roupAccessing a Profle 6roup

// ,ncrement the c3rrent 3sers post co3ntProfile$0or3ms$Posts = Profile$0or3ms$Posts K *;

// Lpdate the c3rrent 3sers last post dateProfile$0or3ms$FastPost = 7ate-ime$(ow;


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Custom *ata &ypesCustom *ata &ypes

Profles support base typesProfles support base types

String, #ntB>, #ntD, *ate&ime, *ecimal,String, #ntB>, #ntD, *ate&ime, *ecimal,etc-etc-

Profles also support custom typesProfles also support custom typesUse type attribute to speciy typeUse type attribute to speciy type

Use seriali.eAs attribute to speciyUse seriali.eAs attribute to speciy

seriali.ation modeE /inary, 4ml !deault', orseriali.ation modeE /inary, 4ml !deault', orStringString

seriali.eAs=F/inaryF types must beseriali.eAs=F/inaryF types must beseriali.ableseriali.able

seriali.eAs=FStrin F t es need t eseriali.eAs=FStrin F t es need t e


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Using a Custom *ata &ypeUsing a Custom *ata &ype

>confi3ration@ >s4stem$web@ >profile@ >properties@ >add name=".art" t4pe="Shoppin.art" serialiMe%s="Ninar4" /@ >/properties@ >/profile@

>/s4stem$web@>/confi3ration@


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Anonymous User ProflesAnonymous User Profles

/y deault, profles arenE Speciy which profle propertiesE Speciy which profle properties

are available to anonymous usersare available to anonymous users*ata keyed by user anonymous #*s*ata keyed by user anonymous #*s

Profles or AnonymousProfles or Anonymous


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Profles or AnonymousProfles or AnonymousUsersUsers>confi3ration@ >s4stem$web@ >anon4mo3s,dentification enabled="tr3e" /@ >profile@ >properties@ >add name="Screen(ame" allow%non4mo3s="tr3e"/@

>add name="Posts" t4pe="S4stem$,nt1" defa3ltVal3e="+ /@

>add name="FastPost" t4pe="S4stem$7ate-ime" /@ >/properties@ >/profile@ >/s4stem$web@>/confi3ration@


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Profle ProvidersProfle Providers

Profle service is provider(basedProfle service is provider(based

/eta G ships with two providers/eta G ships with two providers

AccessProfleProvider !Access'HAccessProfleProvider !Access'H

S;lProfleProvider !S91 Server'S;lProfleProvider !S91 Server'

Use custom providers to add supportUse custom providers to add supportor other data storesor other data stores

H Will be replaced by SQL Express provider in beta 2

Using the S91 ServerUsing the S91 Server


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Using the S91 ServerUsing the S91 ServerProviderProvider>confi3ration@

>s4stem$web@

>profile defa3ltProvider="%sp(etSlProvider" /@

>/s4stem$web@

>/confi3ration@


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ProflesProfles


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CookiesCookies

Mechanism or persisting te3tual dataMechanism or persisting te3tual data

*escribed in 0C >G?I*escribed in 0C >G?I

0or relatively small pieces o data0or relatively small pieces o data

5ttpCookie class encapsulates5ttpCookie class encapsulatescookiescookies

5ttpe;uest-Cookies collection5ttpe;uest-Cookies collection

enables cookies to be read romenables cookies to be read romre;uestsre;uests

5ttpesponse-Cookies collection5ttpesponse-Cookies collection

enables cookies to be written toenables cookies to be written to


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5ttpCookie Properties5ttpCookie Properties

Name Description

Name Cookie name (e.g., "UserName=Jeffpro")

Value Cookie value (e.g., "UserName=Jeffpro")

Values Collection of cookie values (multivalue cookies only)

Haseys !rue if cookie contains multiple values

omain omain to transmit cookie to

#$pires Cookie%s e$piration &ate an& time

'ecure !rue if cookie soul& only e transmitte& over H!!*'

*at *at to transmit cookie to


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Creating a CookieCreating a Cookie

#ttp.ookie cookie = new #ttp.ookie !"Lser(ame") "Oeffpro";Response$.ookies$%dd !cookie;

&ookiename

&ookie

value


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eading a Cookieeading a Cookie

#ttp.ookie cookie = Re3est$.ookies["Lser(ame"];if !cookie 2= n3ll H strin 3sername = cookie$Val3e; // "Oeffpro" $$$I

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