DevExpress的TreeList实现自定义右键菜单打开文件选择对话框

客官°小女子只卖身不卖艺 2023-10-11 00:57 13阅读 0赞

## 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][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：

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## 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 == 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;                                //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 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

点击导入配置文件后

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_102551175]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102551175
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191106170433761.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191106170438917.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70