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下面是引用starmissrita于2005-10-25 20:59发表的 vb... 的问题,If/then/else的范围!!><!: Private Sub exec_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exec.Click Dim x As Single, s As String = "及格咩!" lbl.ForeColor = Color.Green x = din.Text If x >= 50 And x < 60 Then.......