如何將菜單項添加到默認右鍵單擊devexpress treelist

Question

我有一個DevExpress（版本9.2）TreeList，默認顯示一個菜單，其中包含升序/降序排序，列選擇器，點擊樹的標題。

我該如何在此默認菜單中添加更多選擇？

Answer 1

要添加到默認菜單，您需要使用ShowTreeListMenu操作偵聽器並在其中添加行。

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 

第一加法調用函數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); 


    } 

或者在表單加載事件處理程序中添加菜單項。根據需要添加菜單點擊處理程序。