場景

DevExpress的TreeList實現節點上添加自定義右鍵菜單並實現刪除節點功能：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102551175

在上面已經實現自定義右鍵菜單刪除樹節點，這裡要實現自定義右鍵菜單實現

右鍵功能自定義，比如打開文件選擇框。

註：

博客主頁：
https://blog.csdn.net/badao_liumang_qizhi
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霸道的程式猿
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實現

首先綁定treelist的滑鼠單擊事件

treeList.MouseClick -= treeList_MouseClick;
treeList.MouseClick += treeList_MouseClick;

然後在綁定的單擊事件中

獲取treelist，然後獲取其數據源並轉換為對象List，然後是相關的業務判斷。

然後如果是滑鼠右鍵的話，新增右鍵菜單項。

private static void treeList_MouseClick(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            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;
                List<DataTreeNode> datasource = treeList.DataSource as List<DataTreeNode>;
                if (datasource != null)
                {
                    idValue = treeList.Selection[0].GetValue("Id");
                    strIdValue = idValue.ToString();
                    nodeData = datasource.Where<DataTreeNode>(p => p.Id == strIdValue).FirstOrDefault<DataTreeNode>();
                    if (nodeData != null)
                    {
                        if (nodeData.NodeType == DataTreeNodeTypes.File)
                        {
                            treeList.OptionsSelection.EnableAppearanceFocusedRow = true;                                //啟用整行選中

                            #region 右鍵彈出上下文菜單 - 刪除數據文件

                            if (e.Button == System.Windows.Forms.MouseButtons.Right)
                            {
                                System.Windows.Forms.ContextMenu ctxMenu = new System.Windows.Forms.ContextMenu();
                                System.Windows.Forms.MenuItem mnuDelete = new System.Windows.Forms.MenuItem();
                                mnuDelete.Text = "刪除";
                                mnuDelete.Click += delegate(object s, EventArgs ea) {
                                    DialogResult dialogResult = DevExpress.XtraEditors.XtraMessageBox.Show(String.Format("確定要刪除此實驗數據嗎[{0}]？\r\n刪

除後無法恢復!", nodeData.Id), "霸道標題", System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                                    if (dialogResult == DialogResult.Yes)
                                    {
                                        try
                                        {
                                            string fileName = String.Empty;
     

                                            #region 刪除對應的樹節點

                                            DevExpress.XtraTreeList.Nodes.TreeListNode selectedNode = treeList.FindNodeByKeyID(nodeData.Id);
                                            if (selectedNode != null)
                                            {
                                                selectedNode.ParentNode.Nodes.Remove(selectedNode);
                                            }

                                            #endregion

                                            treeList.OptionsSelection.EnableAppearanceFocusedRow = false;                                //禁用整行選中
                                        }
                                        catch(Exception ex)
                                        {
                                          
                                            DevExpress.XtraEditors.XtraMessageBox.Show("刪除實驗數據異常:" + ex.Message, "霸道標題", MessageBoxButtons.OK,

MessageBoxIcon.Error);
                                        }
                                    }
                                };
                                ctxMenu.MenuItems.Add(mnuDelete);
                                #endregion

                                #region 右鍵彈出上下文菜單 - 導入配置文件
                                System.Windows.Forms.MenuItem mnuImport = new System.Windows.Forms.MenuItem();
                                mnuImport.Text = "導入配置文件";
                                mnuImport.Click += delegate(object s, EventArgs ea)
                                {
                                    OpenFileDialog importOpenFileDialog = new OpenFileDialog();
                                    importOpenFileDialog.ShowDialog();
                                   
                                };
                                ctxMenu.MenuItems.Add(mnuImport);

                                #endregion

                                #region 右鍵彈出上下文菜單 - 導出配置文件
                                System.Windows.Forms.MenuItem mnuExport = new System.Windows.Forms.MenuItem();
                                mnuExport.Text = "導出配置文件";
                                mnuExport.Click += delegate(object s, EventArgs ea)
                                {
                                    DialogResult dialogResult = DevExpress.XtraEditors.XtraMessageBox.Show(String.Format("導出[{0}]成功!", nodeData.Id), "標題

", System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                                   
                                };
                                ctxMenu.MenuItems.Add(mnuExport);

                                #endregion

                                ctxMenu.Show(treeList, new System.Drawing.Point(e.X, e.Y));
                            }

                            return;
                        }
                    }
                }
                treeList.OptionsSelection.EnableAppearanceFocusedRow = false;                                //禁用整行選中
            }
        }

效果

點擊導入配置文件後