DevExpress的TreeList实现自定义右键菜单打开文件选择对话框

场景

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：

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

在上面已经实现自定义右键菜单删除树节点，这里要实现自定义右键菜单实现

右键功能自定义，比如打开文件选择框。

注：

博客主页：
https://blog.csdn.net/badao_liumang_qizhi
关注公众号
霸道的程序猿
获取编程相关电子书、教程推送与免费下载。

实现

首先绑定treelist的鼠标单击事件

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

然后在绑定的单击事件中

获取treelist，然后获取其数据源并转换为对象List，然后是相关的业务判断。

然后如果是鼠标右键的话，新增右键菜单项。

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 == )
            {
                object idValue = null;
                string strIdValue = String.Empty;
                DataTreeNode nodeData = null;
                List<DataTreeNode> datasource = treeList.DataSource as List<DataTreeNode>;
                if (datasource != null)
                {
                    idValue = treeList.Selection[].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;                                //启用整行选中

                            #region 右键弹出上下文菜单 - 删除数据文件

                            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 = "删除";
                                mnuDelete.Click += delegate(object s, EventArgs ea) {
                                    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), "霸道标题", System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                                    if (dialogResult == DialogResult.Yes)
                                    {
                                        try
                                        {
                                            string fileName = String.Empty;

                                            #region 删除对应的树节点

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

                                            #endregion

                                            treeList.OptionsSelection.EnableAppearanceFocusedRow = false;                                //禁用整行选中
                                        }
                                        catch(Exception ex)
                                        {

                                            DevExpress.XtraEditors.XtraMessageBox.Show("删除实验数据异常:" + ex.Message, "霸道标题", MessageBoxButtons.OK,

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

                                #region 右键弹出上下文菜单 - 导入配置文件
                                System.Windows.Forms.MenuItem mnuImport = new System.Windows.Forms.MenuItem();
                                mnuImport.Text = "导入配置文件";
                                mnuImport.Click += delegate(object s, EventArgs ea)
                                {
                                    OpenFileDialog importOpenFileDialog = new OpenFileDialog();
                                    importOpenFileDialog.ShowDialog();

                                };
                                ctxMenu.MenuItems.Add(mnuImport);

                                #endregion

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

", 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;                                //禁用整行选中
            }
        }

效果

点击导入配置文件后