主题：[求助]窗口动态项目列表出现错误提示[已解决]

Dim cm As WinForm.ComboBox = e.Form.Controls("ComboBox2")

Dim dr As DataRow
dr = DataTables("表A").Find("型号 = '" & e.Form.Controls("ComboBox1").value & "'and 规格 = '" & cm.text & "'")
If dr IsNot Nothing Then
    e.Form.Controls("TextBox1").Value = dr("颜色")
End If