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。

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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

 

 

点击导入配置文件后