Chuang 1- Tong quan ye ASP.NET MVC FRAMEWORK CHIMING 1 - TONG QUAN V ASP.NET MVC FRAMEWORK 1.1. Gitri thi$u ye m8 hinh MVC Khi cic phin mem img dung ngay cang phit then km mph vi da clang thi vin de thiit lei hen tnic cho phin mem cling tr6 n6n phiic tap hon. Nhung ung dung web gig day cling da phit trien din met tam cao mei, ching kh8ng can la nhOng (mg dung web thing thirang yeti chirc nang hiin thj thong tin ma la nherng hi dicing thong tin he trq nhung trang web tucmg tic yeti ngubi ding. Nhieu giai phap thiet lea kien frac hi thong duqc dua ra vat aux dich lam cho hi tilting linh hog, mem deo, de phit then vi ton to lau dii. Trong de, giai phip this& ke theo m8 hinh kien true MVC duqc Trygve Reenskaug de xuAt vao nhOng am 70 coa the ky 20 to ra rat hieu qua. Mo hinh MVC (Model - View - Controller) la met kien trite phin mem hay mo hinh thiitke dirge sir dung trong ky thuat phtm mem. N6 glop cho cic nha phit then tech img dung cila hq ra thanh 3 pill lchic nhau Model, View va Controller. mOi thanh phin c6 met nhiim vu ring biit va dije lap vei cic thanh phin khic. 1.1.1. Cac thenh phin ctia MVC 111 1 Controller Hinh 1.1 Mii hinh MVC Model Day la thanh phial chira tit ca cic nghiip vu logic, phuang thee zit 1Y, try mit database, did tugng mo to de liiu nhu cic Class, ham xfr 19 Trang 11/109 I Chuang 1- T6ng quan ye ASP.NET MVC FRAMEWORK View Dam nhan viec hien thi thong tin, twang tac veri ngueri dung. Controller Gift nhiem vu nhOn (lieu huong cac you clu tit ngubi dimg va goi ding nhftng phuang thfrc xir ly chung. 1.1.2. Hoot dung cart ma hinh MVC Day la mist each dan giin de m8 to lei luting su kien duce xit ljr trong MVC: - User twang tic yeti View, bang each click vim button, user gui yeti cku di. - Controller nhOn va dieu huong chimg den dung phuang thirc zit l5r er Model. - Model nhan thong tin vi thvc thi cac you au. - 'Chi Model hoan tat viec zit ljr, View se nhon &I lieu tir Model vi Controller se phin hhi lai ngtroi dung. I Y e a r  I ■ 11 User gesture •  Invoice action Notify changes Ask for changes 1 1 . 1 Butane the requested task • Updated Model New View served to ithe user 4—  hinh 1.2 Quy trinh hoist dfing cua mo hinh MVC Trang 12/109 Chtrcmg 1- Togng quan ye ASP.NET MVC FRAMEWORK 1.1.3. U'u diem va niurqc diem ala MVC U'u diem: The hien tinh chuyen nghiep trong lap trinh, phan tich thiet ke. Do avec chia thanh cac thanh phith (Ric lap nen ginp phat trien img dung nhanh, don gian, de nang cap, bao tri ❖ Nhuot diem: Din vei du an nheo viec ap dung m8 hinh MVC gay ding kenh, tin then gian tong qua trinh phat trien. TAn then gian trung chuyen d0 lieu cha cac thanh phin. 1.2. Giafri thieu ye ASP.NET ASP.NET Ia mOt nen tang phat trien (mg dung web (web application framework) &roc phat trien va cung cap ben Microsoft, cho phep nherng ngutii lap trinh to ra nhitng hang web ding, nhOng img dung web va nhOng dich vu web. Lin diu tien &roc dim ra thj throng vito thang 2 nAm 2002 cimg v6i phien ban 1.0 ciut .NET framework, la ding nghe nen tiep ctia Microsoft Active Server Pages(ASP). ASP.NET ducc bien dich duel clang Common Language Runtime (CLR), cho phIp nhang win lop trinh vitt ma ASP.NET yeti bit kk ngon ng0 nao duqc ho try bei .NET language. 1.3. ASP.NET WebForm truyen thong ASP.NET la mOt buec nhay vot khi lin diu )(Wit hien, nhim thu hop khoang cach gifta pith trien Window Form Wong di ft:mg (cd thing thai) va phat trien web hueng HTML (Ichting tang thai) . Hinh duel day munh boa cong nghe ASP.NET Webform ASP.NETWeb FOMIII Ante/IS components (pps, buttamone.) plus suptsful, obisebodned all programming modsi ASPNET A int to hoctitT spolleations In KS Mcnnoles webers product), Clog you Interact MO IITTINataises and taponses Att. A muttiblipearwippdadepbtform (kaf tan* thetbas-4 , biasdikt Ns own 0.4) Hinh 1.3 Cling nghg ASP.NET WebForm Trang 13/109 Chuang 1- Thng quan ASP.NET MVC FRAMEWORK V6i Web Forms, Microsoft da c6 in di HTTP vi HTML bang cach me phong giao dien nguiri ding nhtr la met doi mow dieu lchien (Control) ce cau tnic hoot deng phia Server. Mill di Wong dieu khien (Control) theo doi tang thai cim no thong qua cac you au (sir dung tinh ring ViewState), bieu dien bang cric ma HTML !chi can thief. Ngoai ra, no con to Ong kit not cac so kien phia Client (nhu so kien bem button) ten cac so kien phut Server duqc xu ly ttrcrng img. Thoc te, Web Forms 11 met 16p trim tucmg khOng to duqc thiet ke de cung alp giao clien ce xir ly so kien thong qua Web. ❖ NhOng diem Imut chi cast ASP.NET Web Forms ASP.NET Web Forms truyin thing tong la met y mow rat tit, nhtrng thou te lei phit sinh nhOng dieu phim tip khic. Theo thin gian, viec sir dung ASP.NET Web Forms da nou WI len met so thieu set; - ViewState: Co the duy tri trang thiti thong qua cac yeti ta u (request) thutmg mang lui ket qua la nheng IchOi luqng 16n da lieu duqc chuyen giao giOa client vi server. Da lieu nay c6 the len den hang tram Kbs b met img dung web vira phai, vi n6 di qua lei v6i bit ky yeu cau nito. Dieu nay lam ch * di died gian ch6 /bin hoi vi lam ding nhu cau bang thong dm server; Page life cycle (Chu k9 ton tai ciut met trang web): Lit co the ket not sjr kien phia client veil mA xir 19 so kien phia server. NO phfrc tap vi a bj pha ver; thirc sai ve viec tech biet cac thinh phen: M8 hinh code-behind cita ASP.NET cung cap met gisi phip cho phep img dung due code ra khei cac clang HTML vio thanh met 16p code-behind net:1g biet. Dieu nay duqc hoan nghenh reng rai yeti viec tech biet giao dien veri mA )(Cr ly. Nlumg thou te, nhOng nha phat trier duqc khuyen khich pha ten mA giao dien veri mA )(Cr 11 img dung (nhu la xir ly CSDL) tong nhfmg 16p code- behind khOng 16. Neu khong c6 so tech biet gift cac thinh phin, ket qua cuoi cling c6 the nit kh6 hieu; Limited control over HTML (gidd Mtn kiem spat HTML): Server control to to ra cat mA HTML, nhtmg khang phai la mA HTML ma to mong dqi. Ngoii viec mA HTML min chfing thutmg khong than theo lieu chuin web hoes khong sir dung tot CSS ma he Trang 14/109 Chuang 1- T6ng quan ye ASP.NET MVC FRAMEWORK thong cac server control can tao ra cat gia tri ID phirc tap vi khong down truer duqc, lim kho khan trong viec sir dung JavaScript; KM ming lciem thir thap: Cac nhit thiet ke caa ASP.NET khOng the du down ring Idem thir to gang se tra thank met phan tat yeu caa xu htrong phat then phan mem. Kh8ng ngac nhien khi kien tnic chat the ma ho thiet ke la 'thong pha hqp vai viec tich hqp Ici'em thir. ASP.NET van tip tuc phat trien. Phien bin 2.0 them mat thanh phan chuan de giiun bat se luqng code ma chimg to can phiti to viet. Vai phien ban gan nhit ASP.NET 4.5, mui thir da duqc ming cep &mg ke. Phien ban ASP.NET 4.5 di ap dung met se tinh ming dm ASP.NET MVC vie Web Forms. Tuy vay, van can met han the ten to ben trong no. 1.4. ASP.NET MVC Framework Nhu da giai thieu et Olin truck, ma hinh MVC vai uu diem cam minh di duce img dung trong met se alc framework. Trong do pluii ke den ASP.NET MVC, met framework ma nguen ma mai, xay dung tren ASP.NET . ASP.NET MVC Framework duqc thvc thi tree me hinh model—view controller (MVC). NO gun nhg, de Bang kiem thir phan giao dien, tich hqp cat tinh ming cira ASP.NET . MVC Framework duqc djnh nghTa trong namespace System.Web.Mvc va la met Olt cim Ichong gian ten System.Web. 1.4.1. NguBn goc Tuy ding nghe ASP.NET MVC mai duqc ph& trien nhung no co ljch sir lau deri. Nen tang MVC duqc phat minh bai Trygve Renskaug, Ong di viet tang giay dau den not ve MVC vio nem 1978. Ban du no duqc gui la Thing Model View Editor pattern, nhung sau de no ductc dot ten i i li Model View Controller pattern. ASP.NET MVC lan du lien St Men d6 la trong du an me ngtdin ma MonoRail. Nguen gac that sir de cho ra deri ding nghe Microsoft ASP.NET MVC li do Scott Guthrie (met trong nhOng nha sang tao m ASP.NET ) tren chuyen bay den Austin, Texas de not ve hOi thao Alt.NET vao thing 10-2007. Phien bin ASP.NET MVC 1.0 duqc m dbi vio nam 2009. Trang 15/109 Chuang 1- Tong quan ye ASP.NET MVC FRAMEWORK 1.4.2. Cic think phan cabin ctia ASP.NET MVC ASP.NET MVC Framework Binh 1.4 Ceic thank phan ca ban ciia ASP.NET MVC Models: Cac  tirgng Models li mOt phan ciia ling dung, cac di tucmg nay thiet 1#p logic cila pit dO lieu cna ling dung. Meng thuimg, tic  tugng model lay vi luu tang thai cita model trong CSDL. Vi dp nhu, mOt doi Meng Product (sin pan) se lay MI lieu tit CSDL, than tic tree dit lieu va se c#p nh#t de lieu ter lin vao bang Products 6 SQL Server. Views: Views la cac thinh phan ding di hien thj giao dien ngubi dung (UI). Thong thubng, view duet tio dun vio thong tin dfr lieu Models. Vi dp nhu, view dung di c#3 nh#t bang Products se hien thj cac hQp van ban, drop-down list, vi cac check box data tren trpg thai hien nu cua mOt di Wong Product. Controllers: Controller la cac thanh phan dung de quan ly Luang the ngubi dung, lam viec vei model vi chip view di hien thj giao dien ngtrei ding. Trong mOt Ong dung MVC, view chi dirgc dung cie hien thj thong tin, controller chju trach nhiem quan ly va dap tra nOi dung do ngtrbi dimg nhop vi tuang tac vai ngubi climg. Vi du, controller se quan ly cac clu lieu ngubi dung girl len (query-string values) vi gui cac gia trj de den model, model se lay chl lieu tit CSDL nhe viz cac gia tri nay. MO hinh MVC glop Chung to duet cac Ong dung ma chting phan tack rich red cat khia earth c»a Ong dung (logic ye nh#p lieu, logic xu lY tic vu va logic ye giao dien). MO hinh MVC chi ra min loni logic ke teen nen duet thiep li) 6 dau teen Ong dung. Logic giao dien (UI logic) thuOc ve views. Logic nhtep lieu (input logic) thuoc ve controller. Va logic the vp (Business logic — la logic xir ly th8ng tin, muc dick chinh cua ung dung) thuOc ve model. Sir phan chia nay giim chang to giim bat dugc sir phirc tip cita Ong dung va chi top twig vac Trang 16/109 Chuang 1- Tag quan ye ASP.NET MVC FRAMEWORK mOi khia canh can duce cai d#t a m8i that diem. Vi du nhtz chting to chi can top trung vito giao Bien (views) ma khong phai quan tam den logic xer 1S , thong tin elm ling dung. Su phan tach rach reit ba thanh phan cita img dung MVC can gitip cho viec 1#p trinh dies ra song song. Vi du nhu mQt 1#p trinh vien lam tee vei view, 1#p trinh vien thti hai lo cii dot logic ciut controller va lop trinh vien thir ba c6 the top trung vio logic the vu cia model tai cling met thai diem. 1.4.3. Qua trinh host dung ctia mOt (rug Mpg ASP.NET MVC Cac giai doan thuc hien dui met ling dung ASP.NET MVC duce trinh bay duei day: NhiIn you eau dau den: Trong file Global.asax, cac doi tuqng Route duce them Arlo RouteTable; - Thuc hien viec djnh tuyen: Module UrlRoutingTable sir dung di tuqng Route dau tien thich hqp trong top RouteTable de tao  tuqng RouteData. DOi ttrong nay sau do lai tao ra doi tuqng RequestContext (ifittpContext); - To ra trinh xir ly yeu eau ling dung: Doi tuqng MvcRouteHandler tao ra met the hien ctia 16p MvcHandler va truyen vao no the hien RequestContext; To ra controller. Cie dOi tuqng MvcHandler sir dung the hien cita RequestContext de Lie djnh dig tuqng IcontrollerFactory qua d6 tao ra the hien controller; - Thur hien vai tr6 cis controller: The hien MvcHandler gui phuong thirc Execute cita controller; - Goi action method: DOi tuqng ControllerActionInvoker se xac djnh action method cur met 16p controller de ggi ra. 1.4.4. MOt so tfnh nang ndl bOt cem ASP.NET MVC Framework Tach bath cic tic vu cita ling dung. - C6 kha nang ma rQng (extensible) & kha Hong nhimg (pluggable). Cie thanh phan ctia ASP.NET MVC duqc thiet ke de chting co the duce thay the hoc thy chink met cach a ding. - ASP.NET MVC c6 thanh phan inh xa URL manh me, cho ph6p cluing to may dung nhang ling dung c6 cac dia chi URL xtic tich va de tim kiem. Cac dja chi URL IchOng Trang 17/109 Chuang 1- Tong quan ye ASP.NET MVC FRAMEWORK can phai c6 pan mer rang cita ten tap tin va duqc thiet ki de hO trq cac mau djnh clang ten phu hqp vei viec toi uu hoa tim kiem (URL). Hg trq cac tinh 'tang c6 sin ctia ASP.NET nhu ca the zee thus ngteri dimg, quan thenh vien, quyen, output caching va data caching, seession va profile, quan ly tinh tang img dung, he thong cau hinh - ASP.NET MVC 3 con be sung met view engine mei la Razor View Engine cho phep thiet lap cac view nhanh cheng, de ding va ton it ding sec han so vei vies sir dung Web Forms View Engine. 1.4.3. U'u diem - De ding quan ly su phirc tap cua img dung bang cacti chic img dung thank ba thinh phan model, view, controller. - HO trq tot han cho mo hinh phit then ung dung butt:1g Itiem thin. - He thOng djnh tuyen mash me. HO trq tot cho cac img dung duct ay dung bei nhfrng dill co nhieu lip trinh vien vi thiet ke ma yin quan ly dime tinh &mg dui img dung. - HO trq nhfing tinh nang tat nhat de c6 6 ASP.NET . 1.4.6. Niurcrc diem - Kh8ng Wong den su lden lam cho cac nhi phat trien ASP.NET webfonn ldt6 khan. - Yeu cAu c6 hieu biet ve HTTP, HTML, CSS va JavaScript. 1.4.7. So sal* gigra ASP.NET webform vi ASP.NET MVC Minh 1.5 ASP.NET WebForm va ASP.NET MVC Trang 18/109 Chuang 1- Tong quan vg ASP.NET MVC FRAMEWORK .Net Framework: 118 trq clic loo img dung nhu desktop, web va cac img dung console. ASP.NET framework la met phin cha .NET framework, duct xay dung nhirn 118 trq cac Ung dung Web (caching, authentication va authorization). Trong di, Microsoft co 2 luremg phat trier web ten nen ASP.NET la ASP.NET Webforms va ASP.NET MVC. Muc dich ra dbi cita ASP.NET MVC chi la su thay dei ye mit to duy, no khetng hoan town thay the cho cO img dung ASP.NET Web Forms, va viec chcm huing nao de &Ay dung met website la thy thuk vao cac nha phat trier. Su khac bier gifta 2 Wong phat trien nay dirge the hien dual bang sau. Tinh ring ASP.NET ASP.NET MVC ICien tnic chuong trinh Kien frac me hinh WebFotm > Business > Database Kien tnic sir dung viec phin chic chtrong trinh thanh Controllers, Models, Views Cu phap chuang trinh Sir  dung  cu  phip  cita webrom, eat cac su kien va controls do server quan 19 Cac str kien duqc dieu khitn b61 controllers, cac controls khong do server quan 19 Troy cip du lieu Sir dung hiu het cac tong nghe fly cip de lieu trong Ung dung Phan lin dung LINQ to SQL class de tao me hinh tray cep dei urging Debug Debug chuong trinh phii thuc hien tit ca bao gom the lap truy 4p de lieu, sum hien thj, dieu lchien cac controls/ Debug c6 the sti dung cac unit test kiem tra cac phircmg thirc trong controller Ttic de phan tai TOG de chin MU trong trang co qui Situ cac controls vl ViewState qui lon Phan tai nhanh han Tuang tic veri javascript KM Idt6 IchAn Thu*1 1 9i Trang 19/109 Chuang 1- Tong quan ye ASP.NET MVC FRAMEWORK URL Address au tine dia chi URL c6 dung <filename> .aspx?&<cIc tham s3> Cau tnic dia chi Sob much theo dung Controllers/Action/ID 1.4.8. Lim quen v61 (mg Eking ASP.NET MVC Framework IM61 tgo mOt Gig dpiw MVC Trong bO pan mainVisual Studio 2010 &I co sin ASP.NET MVC Framework, to tao mOt du ga mbi then dubng din sau: File > New Project > Visual C# > Web > ASP.NET MVC Web Application. Now porn 'a Slid TOWN= Puffin Inteffionce Kul lac • Vowel Ca Madam Office Cloud Pffilaffia9 ShrePoit Sivoight Tel VICF Waal' Visual C•• Weal Co a A9WWe yofficalion a 19/ET INC 2 Web Appia ♦ es a AMC MI/CiffiliAppla a ASPIC INC. Mr Appicsbee WIC Empty WS Application a WIC WC 2 brae We Sopfeseen ASPMET Drente Dab as Web Anita ASPIC DynelicDolo Jails 911. Wayfratan Typo Veal Ca A reject Ice aseffiej as appraise Sig ASPIC WIC 3 was Ca red Ca VINSON Vaud Ca Veal Oa was cc Keel OP was Cl Hinh 1.6 Khoi too sing Ming ASP.NET MVC Trang 20/109 [...]...Chuang 1- T6ng quan ve ASP. NET MVC FRAMEWORK Sau khi bam OK, hOp thooi New ASP. NET MVC3 hien re aiSlaillilinallia ASMEM hoject Taupe Watt doorplate Osaiplia Addlult/dP.M7 WC 3 ripest am& apairiltnisfas Va spins Er Um MIMS walk sash El Oen alma praint Tett project maw liktklorrw.Tests Test framework Votsal Strap Unit Test - ANOn,l so 1 sao , 1 Minh 1.7 If(ip thogi New ASP. NET MVC3 Chting ta co the chon... ye ASP. NET MVC FRAMEWORK Nfii dung ala file Index.cshtml vita duqc tso VieSag.Title 'Index"; Index Ta sea lsi nqi dung thinh It Vieweag.Title • 'Index"; Index Hello from our View Templatelqp Chu chuang trinh ye duet kit qua nhu saw My MVC Application Home Index Hello from our View Template! Huth 1.24 Minh hpa thin Si mot View - 4 Trang 32/109 Chuang 1- Tong quan ye ASP. NET MVC FRAMEWORK. .. &roc cach tao mOt du in MVC, tech bien djch vi chay chuong trinh Ben canh 116, cluing ta rung di tim hieu so qua ve cich them oic controller, view va model vio tong da an Trang 33/109 Chuang 2 - Cac thanh phan chfnh caa ASP. NET MVC CHIMING 2 - CAC THANH PHAN CHINH CiJA ASP. NET MVC 2.1 Controller Trong MVC, controller la cac lap C# (thubng dirge bat nguen tir lop System.Web .Mvc. Controller) Mai phuong... ViewEngine lien tien cit.% Microsoft, xuAt hien tin phien ban ASP. NET MVC3 (1/2011) HAu nbu cat chirc nAng ma MVC yeu ciu deu c6 sin tong Razor Razor duqc biet den nhu la ViewEngine men de thay the ViewEngine cif (ASPX hay Web Forms Trani; 45/109 Chuang 2 - Cac thenh phAn chinh ctia ASP. NET MVC Engine) Chang ta vin c6 the tiep toe sir dung ASPX View Engine nhung tuong lai cira View Engine chinh la Razor... HttpRequest va HttpResponse (da la mat phttn cua ASP. NET ) Vi du clued day cho thay each ma dal ttrqng Request lAy gia trj mat churn string "id" publicvoid Detail() { int id = Convert.ToInt32(Request["id"]); } ASP. NET Framework c6 the to Clang inh xa gia trj tham s6 caa URL tam gia trj tham se cila action method Mac dish, neu mat action method c6 mat tham s6, MVC Framework se Idem tra dft lieu you cau va... Active Directory Chung ta tang co the tao project test tong veil Ong dung MVC tir cling mot oh ses Ben canh 46, ta tang co the chon chi 40 ViewEngine 11 ASPX ho#c Razor (3 day, ta chip Internet Application, Razor ViewEngine vi khong chon unit test project Beni OK de hoitn tit Trang 21/109 Chuang 1- Tang quan ye ASP. NET MVC FRAMEWORK Solution Explorer se hien m nhu sau: g Solution "Avalcreies a moo... can phO bien vi no thvc hien don giin, nhanh chong Trong eaia so Solution click chuOt phii chip Add > New Item I-finh 1.11 Katcosh di? ligu bang Entity Framework — hair 1 Tsang 24/109 Chuang 1- Tong quan ye ASP. NET MVC FRAMEWORK Tiep theo, chon ADaNET Entity Data Model balm Add imp lass Instaled Tenpldes e t • rasa Code Gated we NS LS Tea Wall OP P Type vases • piled NMI is outing ADOJET Lily Da DANK... die liOu being Entity Framework by& 2 Criao diein hien ra tint beln du6i, bilm Next 1,/ Dia .111.thiCalimb VIStasold Onsald met Genealetlhe modd ban a abbot Qs we paled tea the wadi an the pqect• avid Ibis wield Slams delalscoameclisa ad diele aptly Wok Mlle rt nay*, J Fintsh Minh 1.13 left ca sb dit li4u bang Entity Framework butk 3 Trang 25/109 Chuang 1- T6ng quan ASP. NET MVC FRAMEWORK ant s6 mai... ASP. NET MVC3 Chting ta co the chon kieu template la Empty, Internet Application ho$c Intranet Application Empty se tao ra nhOng thu mut vi t$p tin tei thieu cho an,g dung MVC3 Internet Application se tao Ira mot img din co 86 tram; m#c dinh, chiing taco the sirs dei vi airy dung tren n6 - Tay chon Intranet Application tang tuong to nhu Internet Application, nhung &roc can filth stn de stl dung trong moi... Entity Framework burk 5 Cuii cone, ta barn Finish di boon thanh viec kit not toi CSDL tit SQL Server invorntsult.e OrowYeelbild s OlOns — Mobs Ss dam sits MY* OM" Noddy r g Tai nib nen DO new iimaiims Muria ingubriepreslidaljel alas Include kw, log eigums Mil Pampa ininisynuas Hinh 1.16 Kb nil CCI set dfr lieu being Entity Frwnework— buOr 6 'Prang 27/109 Chuang 1- Tong quan ve ASP. NET MVC FRAMEWORK . 1.4.7. So sal* gigra ASP. NET webform vi ASP. NET MVC Minh 1.5 ASP. NET WebForm va ASP. NET MVC Trang 18/109 Chuang 1- Tong quan vg ASP. NET MVC FRAMEWORK .Net Framework: 118 trq clic. Chuang 1- Tong quan ye ASP. NET MVC FRAMEWORK 1.4.2. Cic think phan cabin ctia ASP. NET MVC ASP. NET MVC Framework Binh 1.4 Ceic thank phan ca ban ciia ASP. NET MVC Models: Cac  tirgng Models. ma hinh MVC vai uu diem cam minh di duce img dung trong met se alc framework. Trong do pluii ke den ASP. NET MVC, met framework ma nguen ma mai, xay dung tren ASP. NET . ASP. NET MVC Framework