通过产品编号查询 时间（起始和结束），下列代码问题出在哪？还有通过产品编号查询后的产品中的数量合计代码如何写？谢谢！

Dim Filter As String

With e.Form.Controls("产品编号")
    If .Value IsNot Nothing Then
        Filter = "TextBox1= \'" & .Value & "\'"
    End If
End With

With e.Form.Controls("StartDate")
    If .Value IsNot Nothing Then
        If Filter >"" Then
            Filter = Filter & " And "
        End If
        Filter = Filter & "日期 >= #" & .Value & "#"
    End If
End With
With e.Form.Controls("EndDate")
    If .Value IsNot Nothing Then
        If Filter >"" Then
            Filter = Filter & " And "
        End If
        Filter = Filter & "日期 <= #" & .Value & "#"
    End If
End With
If Filter > "" Then
    Tables("销售出库明细").Filter = Filter
End If

Dim Filter As String

With e.Form.Controls("TextBox1")
    If .Value IsNot Nothing Then
        Filter = "产品编号= \'" & .Value & "\'"
    End If
End With