Kev siv cov xwm txheej hauv C# yog dab tsi?
Kev siv cov xwm txheej hauv C# yog dab tsi?

Video: Kev siv cov xwm txheej hauv C# yog dab tsi?

Video: Kev siv cov xwm txheej hauv C# yog dab tsi?
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Cov xwm txheej feem ntau yog siv kom teeb liab cov neeg siv kev ua xws li khawm nyem lossis xaiv cov ntawv qhia zaub mov hauv graphical user interfaces. Thaum ib xwm txheej muaj ntau tus subscribers, cov xwm txheej handlers yog invoked synchronously thaum ib xwm txheej yog tsa. Hu rau xwm txheej asynchronously, saib Hu Synchronous Methods Asynchronously.

Yog li ntawd, siv cov xwm txheej hauv C# yog dab tsi?

Hauv c# , xwm txheej yog siv los ua kom muaj chav kawm lossis cov khoom kom ceeb toom rau lwm cov chav kawm lossis cov khoom ntawm qhov kev txiav txim uas yuav tshwm sim. Tshaj tawm ib xwm txheej , peb yuav tsum siv qhov xwm txheej lo lus tseem ceeb nrog delegate hom. Ua ntej raising ib xwm txheej , peb yuav tsum tau xyuas seb ib tug xwm txheej yog subscribed los tsis tau.

Qhov thib ob, siv cov neeg sawv cev thiab cov xwm txheej hauv C# li cas? A tus sawv cev yog ib txoj kev qhia C# uas txoj kev hu thaum ib xwm txheej yog ua rau. Piv txwv li, yog tias koj nyem khawm ntawm ib daim ntawv, qhov kev zov me nyuam yuav hu rau ib txoj kev tshwj xeeb. Nws yog tus pointer no uas yog a tus sawv cev . Cov neeg sawv cev yog qhov zoo, raws li koj tuaj yeem qhia ntau txoj hauv kev uas ib qho xwm txheej tau tshwm sim, yog tias koj xav li ntawd.

Tsis tas li ntawd, muaj pes tsawg hom txheej xwm muaj nyob hauv C#?

Txhua tus xwm txheej hauv. NET, txawm tias Microsoft tsim nws lossis yog tias nws tau tsim los ntawm lwm tus, yog ua raws li. NET delegate. Delegates yog ib tug ntawm tsib hom ntawm hom suav nrog.

Dab tsi yog qhov txawv ntawm tus neeg sawv cev thiab cov xwm txheej hauv C #?

Ntsiab Qhov sib txawv ntawm cov neeg sawv cev thiab cov xwm txheej hauv C# tus neeg sawv cev yog ib yam khoom siv los ua tus taw tes ua haujlwm los tuav qhov kev siv ntawm ib txoj kev. A tus sawv cev tau tshaj tawm sab nraum ib chav kawm whereas, ib xwm txheej tau tshaj tawm hauv ib chav kawm. Hu rau ib txoj kev siv a tus sawv cev khoom, txoj kev yuav tsum tau xa mus rau lub tus sawv cev khoom.

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