Question

我已经通过动态创建的节点/子节点获得了树视图控件。当用户单击特定节点时，应使用某些相关节点信息/设置更新表格显示。为了跟踪点击哪个节点，我在节点创建运行时添加了一个自定义标记（一个名为＆＃39; NodeTag＆＃39;包含两个字段的类）。我订阅了AfterSelect＆＃39; AfterSelect＆＃39;树视图控件的事件，我想检查SelectedNode.Tag，但奇怪的是我总是得到所有选定对象的最后一个标记对象：所有节点都有NodeTag.Nodename =＆＃34; GLBS＆＃34 ;和NodeTag.NodeNumber = 0.这是一张图片，其中“当前会话”是如果选中，则所选节点文本正确但标签不正确。

Current Session selected as node

以下是代码：

TreeNode SessionNode = new TreeNode("Current Session");
            //Add Tag object to the new node
            NodeTag nt = new NodeTag();
            nt.NodeName = "SESS";
            nt.NodeNumber = 0;
            SessionNode.Tag = (object) nt;
            tv_project.Nodes.Add(SessionNode);


            MainProject.ProjectNode = new TreeNode("Project - " + e.ProjName + " - " + e.ProjOwner);
            //Add Tag object to the new node
            nt.NodeName = "PROJ";
            nt.NodeNumber = 0;
            MainProject.ProjectNode.Tag = (object) nt;
            SessionNode.Nodes.Add(MainProject.ProjectNode);


            TreeNode SettingsNode = new TreeNode("Global Settings");
            //Add Tag object to the new node
            nt.NodeName = "GLBS";
            nt.NodeNumber = 0;
            SettingsNode.Tag = (object) nt;
            SettingsNode.ForeColor = Color.Red;
            MainProject.ProjectNode.Nodes.Add(SettingsNode);

Answer 1

我有解决方案！

您刚刚第一次创建NodeTag的实例，然后您只需修改它您必须为每个节点创建单独的nt：

TreeNode SessionNode = new TreeNode("Current Session");
        //Add Tag object to the new node
        NodeTag nt = new NodeTag();
        nt.NodeName = "SESS";
        nt.NodeNumber = 0;
        SessionNode.Tag = (object) nt;
        tv_project.Nodes.Add(SessionNode);


        MainProject.ProjectNode = new TreeNode("Project - " + e.ProjName + " - " + e.ProjOwner);
        //Add Tag object to the new node
        NodeTag nt1 = new NodeTag();
        nt1.NodeName = "PROJ";
        nt1.NodeNumber = 0;
        MainProject.ProjectNode.Tag = (object) nt1;
        SessionNode.Nodes.Add(MainProject.ProjectNode);


        TreeNode SettingsNode = new TreeNode("Global Settings");
        //Add Tag object to the new node
        NodeTag nt2 = new NodeTag();
        nt2.NodeName = "GLBS";
        nt2.NodeNumber = 0;
        SettingsNode.Tag = (object) nt2;
        SettingsNode.ForeColor = Color.Red;
        MainProject.ProjectNode.Nodes.Add(SettingsNode);

Treeview节点标签奇怪地创建

1 个答案: