场景
Winform控件-DevExpress18下载安装注册以及在VS中使用：
/BADAO_LIUMANG_QIZHI/article/details/100061243
DevExpress的TreeList怎样设置数据源，从实例入手：
/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：
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实现
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ListList<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}]？\r\n删除后无法恢复!", nodeData.Id), "标题",System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question);//如果点击了Yesif (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nodeDevExpress.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));}#endregionreturn;}}treeList.OptionsSelection.EnableAppearanceFocusedRow = false; //禁用整行选中}}
具体注释见代码。
