A.+=B.—C.=—D.+
A.delegate DoSomething()B.delegate void DoSomething(int param)C.void delegate DoSomething()D.DoSomething(int param)
A.用delegate關(guān)鍵字聲明B.類似于函數(shù)的指針C.聲明時(shí)必須和目標(biāo)函數(shù)具有同樣的簽名D.委托是不安全的