以文本方式查看主题 - Foxtable(狐表) (http://foxtable.com/bbs/index.asp) -- 专家坐堂 (http://foxtable.com/bbs/list.asp?boardid=2) ---- 这段代码有错误 (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=88282) |
-- 作者:天蝉一线 -- 发布时间:2016/7/30 17:20:00 -- 这段代码有错误 Dim trv1 As WinForm.TreeView = e.Form.Controls("TreeView1") Dim trv2 As WinForm.TreeView = e.Form.Controls("TreeView2") Dim nd1 As WinForm.TreeNode = trv1.SelectedNode Dim dr As DataRow 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 = 0 Then dr = DataTables("授权").Find("功能模块 = \'" & nd1.Name & "\' And 窗口菜单 Is Null") Else dr = DataTables("授权").Find("功能模块 = \'" & nd1.ParentNode.Name & "\' And 窗口菜单 = \'" & nd1.Name & "\'") End If If dr IsNot Nothing Then Dim nms As String For Each nd2 As WinForm.TreeNode In trv2.AllNodes If nd2.Checked Then nms = nd2.Name End If Next If nms > "" Then dr("用户角色") = nms Else dr("用户角色") = Nothing End If End If 错误提示:.NET Framework 版本:2.0.50727.5485 Foxtable 版本:2016.6.21.1 错误所在事件:窗口,权限管理,TreeView2,AfterCheckNode 详细错误信息: 未将对象引用设置到对象的实例。 |
-- 作者:Hyphen -- 发布时间:2016/7/30 17:39:00 -- Dim nd1 As WinForm.TreeNode = trv1.SelectedNode if nd1 is nothing then return
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