Video: Dab tsi yog parameterized query hauv C #?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Download tau. Kab lus no piav qhia yuav ua li cas nug SQL Server Database siv C# thiab VB. Net siv parameterized cov lus nug uas tso cai rau tiv thaiv SQL Injetion tawm tsam. Parameterized Queries . Parameterized Queries yog cov uas muaj nuj nqis dhau siv SQL Parameters.
Ib yam li ntawd, cov lus nug parameterized hauv C# yog dab tsi?
Download tau. Kab lus no piav qhia yuav ua li cas nug SQL Server Database siv C# thiab VB. Net siv parameterized cov lus nug uas tso cai rau tiv thaiv SQL Injetion tawm tsam. Parameterized Queries . Parameterized Queries yog cov uas muaj nuj nqis dhau siv SQL Parameters.
Qhov thib ob, cov lus nug parameterized ua haujlwm li cas? Txoj kev parameterized queries ua haujlwm , yog tias sqlQuery raug xa mus ua ib qho nug , thiab lub database paub raws nraim qhov no nug yuav ua , thiab tsuas yog tom qab ntawd nws yuav ntxig tus username thiab passwords tsuas yog raws li qhov tseem ceeb. Qhov no txhais tau tias lawv tsis tuaj yeem cuam tshuam rau nug , vim lub database twb paub dab tsi lub nug yuav ua.
Dhau li ntawm no, dab tsi yog parameterized queries?
A parameterized lus nug (tseem hu ua cov lus npaj) yog ib txoj hauv kev ua ntej sau cov lus SQL kom txhua yam koj xav tau yog cov "tsis" (xav tias "variables") uas yuav tsum tau muab tso rau hauv nqe lus rau nws kom ua tiav. Nws yog feem ntau siv los ua ib txoj hauv kev los tiv thaiv SQL txhaj tshuaj.
Vim li cas peb thiaj siv cov kev ntsuas thaum sau cov lus nug?
7 Teb. Siv cov parameter pab tiv thaiv SQL Injection tawm tsam thaum lub database yog siv ua ke nrog cov program interface xws li lub khoos phis tawj lossis lub vev xaib. Hauv koj piv txwv , tus neeg siv ua tau ncaj qha khiav SQL code ntawm koj lub database los ntawm crafting nqe lus hauv txtSalary. uas yog tag nrho cov empSalaries yuav rov qab los.
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