窗體上有一個名為Button1的命令按鈕和一個標(biāo)簽框,然后編寫如下事件過程: 程序運(yùn)行后,單擊命令按鈕,則在標(biāo)簽框上顯示的內(nèi)容是()
A.5.8 B.5 C.7 D.無數(shù)據(jù)
A.System.Web.Services B.System.Web.UI C.System.Windows.Forms D.System.ServiceProcess
A.ListBox1.Items.Add ("How are You") B.ListBox1.Items.Insert ("How are You") C.ListBox1.Items.Add (2, "How are You") D.ListBox1.Items.Insert (2, "How are You")