有三个button控件Sub clickme(ByVal sender As Object, ByVal e As EventArgs)
Dim bt As Button = CType(sender, Button)
Response.Write("你单击的是" & bt.Text)
End SubCtype(sender,button)这个是什么意思啊,它怎么执行的?
Dim bt As Button = CType(sender, Button)
Response.Write("你单击的是" & bt.Text)
End SubCtype(sender,button)这个是什么意思啊,它怎么执行的?
强制类型转化!