主题：关与统计表的问题？

Dim cbcdb As WinForm.ComboBox = e.Form.Controls("combobox2")

e.Form.Controls("Table1").Table.Filter = "月份 = '" & e.Form.Controls("ComboBox1").Text & "' and  产品 like '%" & cbcdb.text & "%'"
e.Form.Controls("ComboBox4").Text = e.Form.Controls("Table1").Table.Compute("sum(售价)")