主题：授权目录树有时失灵

此主题相关图片如下：目录树点击.gif

afterchecknode 事件代码

 

Dim trv1 As WinForm.TreeView = e.Form.Controls("TreeView1")
Dim trv3 As WinForm.TreeView = e.Form.Controls("TreeView3")
Dim nd1 As WinForm.TreeNode = trv1.SelectedNode
Dim dr As DataRow

If e.node.ParentNode Is Nothing Then
    If e.node.Checked = True Then
        For Each cnd As winform.treenode In e.node.nodes
            cnd.Checked =True
        Next
    Else
        For Each cnd As winform.treenode In e.node.nodes
            cnd.Checked = False
        Next
    End If
Else
    e.node.ParentNode.checked = False
End If

'If e.Node.ParentNode IsNot Nothing Then '取消父节点的选中标记,因为选中子节点,就不要选中父节点了
'e.Node.ParentNode.Checked = False
'End If
'
'
'For Each cnd As WinForm.TreeNode In e.node.Nodes '取消子节点的选中标记,因为选中父节点,就不要选中子节点了
'cnd.Checked = False
'Next

If nd1.Level = 1 Then
    dr = DataTables("授权").Find("name = '" & nd1.ParentNode.Name & "' And 表名 = '" & nd1.Name & "'")
End If

If dr IsNot Nothing Then
    Dim nms As String
    For Each nd As WinForm.TreeNode In trv3.AllNodes
        If nd.Level > 0 Then
            If nd.Checked  Then
                nms  = nms & "," &  nd.Name
            End If
        End If
    Next
    If nms > "" Then
        dr("可编辑列") = nms.Trim(",")
    Else
        dr("可编辑列") = Nothing
    End If
Else
    MessageBox.show("授权表没有这列,请检查")
End If

这个是 afterchecknode 事件的bug。快速点击勾选目录树的时候，就会不触发事件。

目前没有解决的方法，除非你不用treeview，你重写这个treeview控件。

 

重写的控件用这样加入和绑定事件了  http://www.foxtable.com/webhelp/scr/2374.htm

 

参考

 

http://blog.csdn.net/ypchen001/article/details/47982811

 

https://my.oschina.net/Tsybius2014/blog/551358

 

我没有这个能力,等你们更新，以后多检查下就是了