主题：求助查询

Dim tym As WinForm.ComboBox = e.Form.Controls("通用名")
Dim cj As WinForm.ComboBox = e.Form.Controls("生产厂家")
Dim gg As WinForm.ComboBox = e.Form.Controls("规格")

设置了上面3个变量，如何在表中通过条件查找，单个条件和多个条件都能查找