计算纳税金额

计算纳税金额
 
代码如下
 
Private Sub Command1_Click()
 Dim n As Single, w As Single
 Dim s As Single, m As Single
 n = Val(Text1.Text)
 w = n - 500
 Select Case w
     Case Is <= 500
         s = 0.05
     Case Iw < 2000
         s = 0.1
     Case Is <= 5000
         s = 0.15
     Case Is <= 20000
         s = 0.2
     Case Is <= 40000
         s = 0.25
     Case Is <= 60000
         s = 0.3
     Case Is <= 80000
         s = 0.35
     Case Is <= 100000
         s = 0.4
     Case Is > 100000
         s = 0.45
     End Select
     m = w * s
     Text2.Text = m
 End Sub
 
Private Sub Command2_Click()
 Text1.Text = ""
 Text2.Text = ""
 
End Sub