Private Sub Command1_Click() Dim cj As Integer, dj As String cj = Val(Text1.Text) If CStr(cj) <> Text1.Text Then dj = "不存在" Else Select Case cj Case 85 To 100 dj = "优秀" Case 75 To 84 dj = "良好" Case 60 To 74 dj = "及格" Case 0 To 59 dj = "不及格" Case Else dj = "不存在" End Select End If Text2.Text = dj End Sub