主题：GetComboListString后面的条件表达式怎么写？（已解决）

e.Form.Controls("加工工序").Value = Nothing
Dim yg As String = e.Form.Controls("员工").Value

Dim cpbh As String = e.Form.Controls("产品编号").Value
Dim gx As WinForm.ComboBox
gx = Forms("废品统计").Controls("加工工序")
gx.ComboList = DataTables("调度中心").GetComboListString("指定工序","[产品编号] = '" & cpbh & "'" and "[员工] = '" & yg & "'")

错误如下：

此主题相关图片如下：01.jpg

请高手分析下原因！