場景

Winform控制元件-DevExpress18下載安裝注冊以及在VS中使用：

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

DevExpress的TreeList怎樣設定資料源，從實體入手：

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

實作了樹形結構后，我們要實作在樹形節點上點擊右鍵時彈窗，彈窗確認之后實作將當前節點洗掉，

注：

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實作

這里在表單加載完的事件里系結Treelist的滑鼠點擊事件，

this.treeList2.MouseClick += treeList2_MouseClick;

在事件方法中

private void treeList2_MouseClick(object sender, MouseEventArgs e)        {            //獲取當前TreeList物件            DevExpress.XtraTreeList.TreeList treeList = sender as DevExpress.XtraTreeList.TreeList;            if (treeList != null && treeList.Selection.Count == 1)            {                object idValue = https://www.cnblogs.com/badaoliumangqizhi/p/null;                string strIdValue =https://www.cnblogs.com/badaoliumangqizhi/p/ String.Empty;                DataTreeNode nodeData = null;                //通過TreeList的DataSource屬性獲取所有節點的List                List<DataTreeNode> datasource = treeList.DataSource as List<DataTreeNode>;                if (datasource != null)                {                    //獲取選中節點的集合中第一個的Id屬性                    idValue = https://www.cnblogs.com/badaoliumangqizhi/p/treeList.Selection[0].GetValue("Id");                    strIdValue = idValue.ToString();                    //獲取當前選中節點DataTreeNode物件                    nodeData = https://www.cnblogs.com/badaoliumangqizhi/p/datasource.Where(p => p.Id == strIdValue).FirstOrDefault();                    if (nodeData != null)                    {                        //獲取或設定是否啟用聚焦節點的外觀設定 -啟用整行選中                            treeList.OptionsSelection.EnableAppearanceFocusedRow = true;                                //啟用整行選中                            #region 右鍵彈出背景關系選單 - 洗掉待比較的檔案                            //如果點擊的是滑鼠右鍵                            if (e.Button == System.Windows.Forms.MouseButtons.Right)                            {                                //構建右鍵選單                                System.Windows.Forms.ContextMenu ctxMenu = new System.Windows.Forms.ContextMenu();                                //構建右鍵洗掉選單項                                System.Windows.Forms.MenuItem mnuDelete = new System.Windows.Forms.MenuItem();                                mnuDelete.Text = "洗掉當前檔案";                                //洗掉選單項點擊事件訂閱                                mnuDelete.Click += delegate(object s, EventArgs ea)                                {                                    //DevExpress的對話框                                    DialogResult dialogResult = DevExpress.XtraEditors.XtraMessageBox.Show(String.Format("確定要洗掉此實驗資料嗎[{0}]？\r\n洗掉后無法恢復!", nodeData.Id), "標題", System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question);                                    //如果點擊了Yes                                    if (dialogResult == DialogResult.Yes)                                    {                                        try                                        {                                            string fileName = String.Empty;                                            #region 洗掉對應的樹節點                                            //通過設定主鍵ID找到節點node                                            DevExpress.XtraTreeList.Nodes.TreeListNode selectedNode = treeList.FindNodeByKeyID(nodeData.Id);                                            if (selectedNode != null)                                            {                                                //洗掉節點                                                this.treeList2.Nodes.Remove(selectedNode);                                            }                                            #endregion                                            //禁用整行選中                                            treeList.OptionsSelection.EnableAppearanceFocusedRow = false;                                                                       }                                        catch (Exception ex)                                        {                                            ICSharpCode.Core.LoggingService<DataTreeListHelper>.Error("洗掉實驗資料例外:" + ex.Message, ex);                                            DevExpress.XtraEditors.XtraMessageBox.Show("洗掉實驗資料例外:" + ex.Message, "標題",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;                                //禁用整行選中            }        }

具體注釋見代碼，

標籤：WinForm

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