看看
http://www.foxtable.com/webhelp/scr/1284.htm
Dim TB1 As WinForm.TextBox = e.Form.Controls("TextBox1")
Dim t As string = tb1.text
Tables("库存明细").Filter = "品名 = '" & t & "'"
Dim dr As DataRow = Tables("库存").Current.DataRow
Tables("库存明细").Filter = "[品名] = '" & dr("品名") & "'"