場(chǎng)景

Winform控件-DevExpress18下載安裝注冊(cè)以及在VS中使用：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100061243

DevExpress的TreeList怎樣設(shè)置數(shù)據(jù)源，從實(shí)例入手：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102548490

實(shí)現(xiàn)了樹(shù)形結(jié)構(gòu)后，我們要實(shí)現(xiàn)在樹(shù)形節(jié)點(diǎn)上點(diǎn)擊右鍵時(shí)彈窗，彈窗確認(rèn)之后實(shí)現(xiàn)將當(dāng)前節(jié)點(diǎn)刪除。

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注：

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實(shí)現(xiàn)

這里在窗體加載完的事件里綁定Treelist的鼠標(biāo)點(diǎn)擊事件。

this.treeList2.MouseClick += treeList2_MouseClick;

在事件方法中

private void treeList2_MouseClick(object sender, MouseEventArgs e){//獲取當(dāng)前TreeList對(duì)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;//通過(guò)TreeList的DataSource屬性獲取所有節(jié)點(diǎn)的ListList<DataTreeNode> datasource = treeList.DataSource as List<DataTreeNode>;if (datasource != null){//獲取選中節(jié)點(diǎn)的集合中第一個(gè)的Id屬性idValue = treeList.Selection[0].GetValue("Id");strIdValue = idValue.ToString();//獲取當(dāng)前選中節(jié)點(diǎn)DataTreeNode對(duì)象nodeData = datasource.Where<DataTreeNode>(p => p.Id == strIdValue).FirstOrDefault<DataTreeNode>();if (nodeData != null){//獲取或設(shè)置是否啟用聚焦節(jié)點(diǎn)的外觀設(shè)置 -啟用整行選中treeList.OptionsSelection.EnableAppearanceFocusedRow = true;??????????????????????????????? //啟用整行選中#region 右鍵彈出上下文菜單 - 刪除待比較的文件//如果點(diǎn)擊的是鼠標(biāo)右鍵if (e.Button == System.Windows.Forms.MouseButtons.Right){//構(gòu)建右鍵菜單System.Windows.Forms.ContextMenu ctxMenu = new System.Windows.Forms.ContextMenu();//構(gòu)建右鍵刪除菜單項(xiàng)System.Windows.Forms.MenuItem mnuDelete = new System.Windows.Forms.MenuItem();mnuDelete.Text = "刪除當(dāng)前文件";//刪除菜單項(xiàng)點(diǎn)擊事件訂閱mnuDelete.Click += delegate(object s, EventArgs ea){//DevExpress的對(duì)話(huà)框DialogResult dialogResult = DevExpress.XtraEditors.XtraMessageBox.Show(String.Format("確定要?jiǎng)h除此實(shí)驗(yàn)數(shù)據(jù)嗎[{0}]？\r\n刪除后無(wú)法恢復(fù)!", nodeData.Id), "標(biāo)題",System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question);//如果點(diǎn)擊了Yesif (dialogResult == DialogResult.Yes){try{string fileName = String.Empty;#region 刪除對(duì)應(yīng)的樹(shù)節(jié)點(diǎn)//通過(guò)設(shè)置主鍵ID找到節(jié)點(diǎn)nodeDevExpress.XtraTreeList.Nodes.TreeListNode selectedNode = treeList.FindNodeByKeyID(nodeData.Id);if (selectedNode != null){//刪除節(jié)點(diǎn)this.treeList2.Nodes.Remove(selectedNode);}#endregion//禁用整行選中treeList.OptionsSelection.EnableAppearanceFocusedRow = false;??????????????????????????????}catch (Exception ex){ICSharpCode.Core.LoggingService<DataTreeListHelper>.Error("刪除實(shí)驗(yàn)數(shù)據(jù)異常:" + ex.Message, ex);DevExpress.XtraEditors.XtraMessageBox.Show("刪除實(shí)驗(yàn)數(shù)據(jù)異常:" + ex.Message, "標(biāo)題", MessageBoxButtons.OK, MessageBoxIcon.Error);}}};ctxMenu.MenuItems.Add(mnuDelete);ctxMenu.Show(treeList, new System.Drawing.Point(e.X, e.Y));}#endregionreturn;}}treeList.OptionsSelection.EnableAppearanceFocusedRow = false;??????????????????????????????? //禁用整行選中}}

具體注釋見(jiàn)代碼。

總結(jié)

以上是生活随笔為你收集整理的DevExpress的TreeList实现节点上添加自定义右键菜单并实现删除节点功能的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

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