Video: Dab tsi yog cov ntaub ntawv upload hauv asp net?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
ASP . NET - Uploading ntaub ntawv . ASP . NET muaj ob yam kev tswj uas tso cai rau cov neeg siv upload cov ntaub ntawv mus rau lub web server. Thaum lub server tau txais qhov tshaj tawm ntaub ntawv cov ntaub ntawv, daim ntawv thov tuaj yeem txuag nws, tshawb xyuas, lossis tsis quav ntsej nws.
Raws li, dab tsi yog cov ntaub ntawv tswj hauv asp net?
ASP . NET FileUpload tswj tso cai rau peb upload cov ntaub ntawv mus rau Web Server lossis cia hauv Web Form. Cov tswj yog ib feem ntawm ASP . NET tswj thiab tuaj yeem muab tso rau hauv Web Form los ntawm tsuas yog rub thiab xa los ntawm Toolbox mus rau WebForm. Lub FileUpload tswj tau qhia hauv ASP . NET 2.0.
Ib yam li ntawd, HttpPostedFileBase yog dab tsi? Cov HttpPostedFileBase chav kawm yog chav kawm paub daws teeb uas muaj cov tswv cuab tib yam li HttpPostedFile chav kawm. Cov HttpPostedFileBase chav kawm tso cai rau koj los tsim cov chav kawm uas tau muab los ntawm cov chav kawm uas zoo li HttpPostedFile chav kawm, tab sis koj tuaj yeem hloov kho thiab ua haujlwm sab nraum ASP. NET pipeline.
Yog li ntawd, asp net file yog dab tsi?
ASP . NET yog qhov qhib-qhov server-sab web-application moj khaum tsim los rau kev txhim kho lub vev xaib los tsim cov nplooj ntawv web dynamic tsim los ntawm Microsoft kom tso cai rau cov neeg siv los tsim cov vev xaib dynamic, kev siv thiab kev pabcuam. Nws yog thawj zaug tso tawm thaum Lub Ib Hlis 2002 nrog version 1.0 ntawm.
Cov ntaub ntawv tswj hwm yog dab tsi?
A Tswj cov ntaub ntawv ua haujlwm ntawm a ntaub ntawv xws li nyeem a ntaub ntawv , sau a ntaub ntawv , thiab ntxiv cov ntaub ntawv rau a ntaub ntawv . Koj tseem tuaj yeem siv lub Tswj cov ntaub ntawv luam, rename, thiab rho tawm cov ntaub ntawv . Koj feem ntau configure ib tug cais Tswj cov ntaub ntawv rau txhua tus ntaub ntawv koj xav manipulate.
Pom zoo:
Dab tsi yog cov ntaub ntawv hloov pauv hauv cov ntaub ntawv khaws cia?
Cov ntaub ntawv hloov pauv yog cov ntaub ntawv uas tau tsim nyob rau hauv daim ntawv thov kev sib ntsib, uas tsis tau khaws cia hauv cov ntaub ntawv tom qab daim ntawv thov raug txiav
Dab tsi yog kev noj cov ntaub ntawv hauv cov ntaub ntawv loj?
Cov ntaub ntawv ingestion yog tus txheej txheem ntawm tau txais thiab import cov ntaub ntawv rau tam sim ntawd siv los yog cia nyob rau hauv ib tug database. Txhawm rau noj ib yam dab tsi yog 'coj ib yam dab tsi los yog nqus ib yam dab tsi.' Cov ntaub ntawv tuaj yeem xa tawm hauv lub sijhawm tiag tiag lossis noj hauv cov khoom siv
Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
Kem oriented databases (aka columnar databases) yog qhov tsim nyog rau kev ntsuas kev ua haujlwm ntau dua vim tias cov ntaub ntawv hom ntawv (kem hom) qiv nws tus kheej kom nrawm dua cov lus nug ua - scans, aggregation thiab lwm yam. Ntawm qhov tod tes, kab oriented databases khaws ib kab (thiab tag nrho nws. kab) contiguously
Dab tsi yog cov teeb meem ntawm kev tswj cov ntaub ntawv hauv cov ntaub ntawv ib txwm muaj?
Nyob rau tib lub sijhawm, qhov kev tswj hwm cov ntaub ntawv ib puag ncig tsim teeb meem xws li cov ntaub ntawv rov ua dua thiab tsis sib xws, cov kev pab cuam-cov ntaub ntawv dependence, inflexibility, tsis muaj kev ruaj ntseg, thiab tsis muaj cov ntaub ntawv sib qhia thiab muaj
Txoj hauv kev zoo tshaj plaws rau daim ntawv thov upload cov ntaub ntawv loj hauv s3 yog dab tsi?
Cov ntaub ntawv loj tshaj plaws uas tuaj yeem muab tso rau hauv Amazon S3 thoob hauv ib qho kev ua haujlwm PUT yog 5 GB. Yog tias koj xav upload cov khoom loj (> 5 GB), koj yuav txiav txim siab siv multipart upload API, uas tso cai rau upload cov khoom ntawm 5 MB mus txog 5 TB