在窗体上画一个通用对话框,其Name属性为Cont,再画一个命令按钮,Name属性为Command1,然后编写如下事件过程: Private Sub Command1 Click() Cont.FileName=" " Cont.Flags=vbOFNFileMustExist Cont.Filter="All Filesl|*.*" Cont.FilterIndex=3 Cont.DialogTitle="Open File" Cont.Action=1 If Cont.FileName=" " Then MsgBox "No file selected" Else Open Cont.FileName For Input As # 1 Do While Not EOF(1) Input # 1,b$ Print b$ Loop End If End Sub 以下各选项,对上述事件过程描述错误的是( )