Vb.net 在vb中选择带有连接字符串的大小写

这是我的大学录取代码，但它不会运行

Public Class College_Admission

Private Sub btnResult_Click(sender As Object, e As EventArgs) Handles btnResult.Click
    Dim score, rank As Integer
    score = txtScore.Text
    rank = txtRank.Text
    Select Case score And rank
        Case Is >= 90 and  >= 25
            lblResult.Text = "Congratulation, you can apply for this college!"
        Case Is >= 89 and >= 50
            lblResult.Text = "Congratulation, you can apply for this college!"
        Case Is >= 70 and  >= 75
            lblResult.Text = "Congratulation, you can apply for this college!"
        Case Else
            lblResult.Text = "Sorry, you can not apply this college."

    End Select
End Sub
End Class

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此代码有什么问题？

不要为此使用Select。因为你有两个条件要检查，所以它不起作用。只要这样做：

If (score >= 90 And rank >= 25) Or (score >= 89 And rank >= 50) Or (score >= 70 And rank >= 75) Then
    lblResult.Text = "Congratulations, you can apply to this college!"
Else
    lblResult.Text = "Sorry, you cannot apply to this college."
End If

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Select Case score And rank

我不确定语法是否是这样的。+1你赢了我：）我只是想知道你为什么说

Select Case

在他目前的情况下不起作用。？它会起作用的。看看我下面的答案。是的，

Select Case true

有点模糊，但

Select x和y

没有。对于实际上只是if/else场景的情况，使用Select是没有意义的。谁否决了这一点<代码>不起作用显然是正确的：推送错误的语法。。。收到错误的答案

If/Else

是最正确的。