在VB编程时,弹出这样的提示:编译错误：未找到方法或数据成员.是怎么回事呀? 谢谢指教！

代码如下：
Private Sub Command1_Click()
Text3.Text = Val(Text1.Text) + Val(Text2.Text)
End Sub
Private Sub Command2_Click()
Text3.Text = Val(Text1.Text) - Val(Text2.Text)
End Sub
Private Sub Command3_Click()
Text3.Text = Val(Text1.Text) * Val(Text2.Text)
End Sub
Private Sub Command4_Click()
Text3.Text = Val(Text1.Text) / Val(Text2.Text)
End Sub
Private Sub Command5_Click()
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
End Sub
Private Sub Command6_Click()
End
End Sub