VB求助,怎么编?

窗体中有一个文本框,三个命令按钮和三个标签,文本框接收用户输入的数据,点击“倒数”、“平方”、“立方”命令按钮,实现相应的计算,并将计算结果显示在标签上.

Option Explicit

Private Sub Command1_Click()
Dim str As String
Dim txt As String

txt = Text1.Text
str = "1/" & txt
Label1.Caption = str
End Sub

Private Sub Command2_Click()
Dim txt As String

txt = Text1.Text

Label2.Caption = Val(txt) * Val(txt)
End Sub

Private Sub Command3_Click()
Dim txt As String

txt = Text1.Text

Label3.Caption = Val(txt) * Val(txt) * Val(txt)
End Sub

如果还没解决，请加我，帮你解决