摘要：
场景 实现在表单已加载的情况下绑定Treelist的鼠标单击事件。this.treeList2.MouseClick+=树列表2_鼠标单击；事件方法中的PrivateInterestList2 _ MouseClick｛//获取当前TreeList对象DevExpress.XtraTreeList.TreeList=senderasDevExpress.XtraTreeList.TreeList；if（TreeList！=null&&TreeList.Selection.Count==1）｛objectidValue=null；stringstrIdValue=String.Empty；DataTreeNodeData=null；//通过TreeListDataSource=TreeList.DataSourceasList的DataSource属性获取所有节点的ListList；if（DataSource！=null）｛//获取第一个Id属性idValue=TreeList.Selection[0].GetValue；strIdValue=idValue.ToString（）;//获取当前选定的节点DataTreeNode对象nodeData=datasource。其中。FirstOrDefault（）；if（nodeData！删除后无法恢复！
Winform控件-DevExpress18下载安装注册以及在VS中使用：
https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100061243
DevExpress的TreeList怎样设置数据源，从实例入手：
https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102548490
实现了树形结构后，我们要实现在树形节点上点击右键时弹窗，弹窗确认之后实现将当前节点删除。
注：
博客主页：
https://blog.csdn.net/badao_liumang_qizhi
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这里在窗体加载完的事件里绑定Treelist的鼠标点击事件。
this.treeList2.MouseClick += treeList2_MouseClick;在事件方法中
private void treeList2_MouseClick(object sender, MouseEventArgs e) { //获取当前TreeList对象 DevExpress.XtraTreeList.TreeList treeList = sender as DevExpress.XtraTreeList.TreeList; if (treeList != null && treeList.Selection.Count == 1) { object idValue = null; string strIdValue = String.Empty; DataTreeNode nodeData = null; //通过TreeList的DataSource属性获取所有节点的List List<DataTreeNode> datasource = treeList.DataSource as List<DataTreeNode>; if (datasource != null) { //获取选中节点的集合中第一个的Id属性 idValue = treeList.Selection[0].GetValue("Id"); strIdValue = idValue.ToString(); //获取当前选中节点DataTreeNode对象 nodeData = datasource.Where<DataTreeNode>(p => p.Id == strIdValue).FirstOrDefault<DataTreeNode>(); if (nodeData != null) { //获取或设置是否启用聚焦节点的外观设置 -启用整行选中 treeList.OptionsSelection.EnableAppearanceFocusedRow = true; //启用整行选中 #region 右键弹出上下文菜单 - 删除待比较的文件 //如果点击的是鼠标右键 if (e.Button == System.Windows.Forms.MouseButtons.Right) { //构建右键菜单 System.Windows.Forms.ContextMenu ctxMenu = new System.Windows.Forms.ContextMenu(); //构建右键删除菜单项 System.Windows.Forms.MenuItem mnuDelete = new System.Windows.Forms.MenuItem(); mnuDelete.Text = "删除当前文件"; //删除菜单项点击事件订阅 mnuDelete.Click += delegate(object s, EventArgs ea) { //DevExpress的对话框 DialogResult dialogResult = DevExpress.XtraEditors.XtraMessageBox.Show(String.Format("确定要删除此实验数据吗[{0}]？ 删除后无法恢复!", nodeData.Id), "标题", System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question); //如果点击了Yes if (dialogResult == DialogResult.Yes) { try { string fileName = String.Empty; #region 删除对应的树节点 //通过设置主键ID找到节点node DevExpress.XtraTreeList.Nodes.TreeListNode selectedNode = treeList.FindNodeByKeyID(nodeData.Id); if (selectedNode != null) { //删除节点 this.treeList2.Nodes.Remove(selectedNode); } #endregion //禁用整行选中 treeList.OptionsSelection.EnableAppearanceFocusedRow = false; } catch (Exception ex) { ICSharpCode.Core.LoggingService<DataTreeListHelper>.Error("删除实验数据异常:" + ex.Message, ex); DevExpress.XtraEditors.XtraMessageBox.Show("删除实验数据异常:" + ex.Message, "标题",MessageBoxButtons.OK, MessageBoxIcon.Error); } } }; ctxMenu.MenuItems.Add(mnuDelete); ctxMenu.Show(treeList, new System.Drawing.Point(e.X, e.Y)); } #endregion return; } } treeList.OptionsSelection.EnableAppearanceFocusedRow = false; //禁用整行选中 } }
具体注释见代码。