改了个多选加载,加载时没问题,但取消全部节点时,加载了全部内容,数据有点多,我想不加载任何内容,该如何改呢
Dim trv As WinForm.TreeView = e.Sender
Dim flt As String
For Each nd As WinForm.TreeNode In e.node.Nodes '同步子节点选中状态
nd.Checked = e.Node.Checked
Next
If e.node.ParentNode IsNot Nothing Then '去掉父节点选中状态
e.node.ParentNode.Checked = False
End If
For Each nd As WinForm.TreeNode In trv.AllNodes
If nd.Level > 0 AndAlso nd.ParentNode.Checked Then '如果父节点选中
Continue For '跳过此节点,处理下一结点
End If
If nd.Checked Then
If flt > "" Then
flt = flt & " Or " '注意用or而不是And
End If
Select Case e.Node.Level
Case 0
flt = flt & "( 统计年度 = '" & nd.Text & "')"
Case 1
flt = flt & "( 统计年度 = '" & nd.ParentNode.Text & "' And 统计月份 = '" & nd.Text & "')"
Case 2
flt = flt & "( 统计年度 = '" & nd.ParentNode.ParentNode.Text & "' And 统计月份 = '" & nd.ParentNode.Text & "' and 通知日期 = # " & nd.Text & " #)"
End Select
End If
Next
DataTables("销售订单").LoadFilter = flt
DataTables("销售订单").Load()
DataTables("明细").Load()