如何将菜单项添加到默认右键单击devexpress treelist

Question

我有一个DevExpress（版本9.2）TreeList，默认显示一个菜单，其中包含升序/降序排序，列选择器，点击树的标题。

我该如何在此默认菜单中添加更多选择？

Answer 1

要添加到默认菜单，您需要使用ShowTreeListMenu操作侦听器并在其中添加行。

Private Sub treeCompany_ShowTreeListMenu(ByVal sender As System.Object, ByVal e As DevExpress.XtraTreeList.TreeListMenuEventArgs) Handles treeCompany.ShowTreeListMenu 
     ' add the ability to expand the nodes in the tree 
     e.Menu.Items.Add(New DevExpress.Utils.Menu.DXMenuItem("Expand All Nodes", AddressOf ExpandNode)) 
     ' make the last item added begin the group so you have a divider 
     e.Menu.Items(e.Menu.Items.Count - 1).BeginGroup = True 
     ' add the ability to collapse the nodes in the tree 
     e.Menu.Items.Add(New DevExpress.Utils.Menu.DXMenuItem("Collapse All Nodes", AddressOf CollapseAll)) 
    End Sub 

第一加法调用函数ExpandNode()和第二呼叫CollapseAll()。

Answer 2

void treeList1_PopupMenuShowing(object sender, DevExpress.XtraTreeList.PopupMenuShowingEventArgs e) 
    { 
     DXMenuItem item = new DXMenuItem("New menu item"); 
     e.Menu.Items.Add(item); 


    } 

或者在表单加载事件处理程序中添加菜单项。根据需要添加菜单点击处理程序。