以下代码执行后，在控件“CheckBox_仅显库存”上打上勾，再点TreeView上任何节点，能正常筛选，这时，再把TreeView上的勾去掉，就弹出错误了，内容是：语法错误:“And”运算符前缺少操作数。，我把代码改了好几次，也没解决，请老师看看错在哪了，谢谢！
Dim nms As String() = {"牌号","母卷号","卷号"} '指定生成目录树的各列
Dim qts As String() = {"'","'","'"} '指定将各列的值括起来的符号,这里都是字符型,所以都是单引号
Dim trv As WinForm.TreeView = e.Sender
Dim flt As String
Dim nd As WinForm.TreeNode
For Each nd In e.node.allNodes '清除子节点的选中标记
nd.Checked = False
Next
nd = e.Node.ParentNode
Do While nd IsNot Nothing '清除父节点的选中标记
nd.Checked = False
nd = nd.ParentNode
Loop
If e.node.Text = "加载所有数据" Then
For Each nd In trv.AllNodes
If nd.Name <> e.Node.Name Then nd.Checked = False
Next
flt = "1=1"
Else
For Each nd In trv.AllNodes
If nd.Checked Then
trv.Nodes(0).Checked = False '最上面"加载所有数据" 选择框去掉
Dim rts() As String = nd.FullPath.Split("\")
Dim val As String = ""
For i As Integer = 0 To rts.length - 1
If val > "" Then
val = val & " And "
End If
val = val & nms(i) & " = " & qts(i) & rts(i) & qts(i)
Next
If flt > "" Then
flt = flt & " Or (" & val & ")"
Else
flt = val
End If
End If
Next
End If
If e.Form.Controls("CheckBox_仅显库存").checked=True Then
Tables("工序合并表查询独立窗口_Table_工序合并表").Filter = flt & " and [库存标记] = True"
Else Tables("工序合并表查询独立窗口_Table_工序合并表").Filter = flt
End If
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Post By：2015/3/5 10:48:00 [只看该作者]
