winfrom递归生成菜单，支持多级嵌套

Love The Way You Lie 2022-08-14 00:49 241阅读 0赞

private void Form2_Load(object sender, EventArgs e)
    {
        CreateMenu();
    }

private void CreateMenu()
    {
        //定义菜单条
        Bar bar = new Bar("Menu Bar");
        bar.MenuBar = true;
        bar.Stretch = true;
        bar.Style = eDotNetBarStyle.Office2003;
        dotNetBarManager1.Bars.Add(bar); //添加到dotNetBarManager1对象
        bar.DockSide = eDockSide.Top;    //设置Dock样式
    
        System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();
        stopwatch.Start(); //  开始监视代码运行时间
    
        var listMenu = GetButtonItem(0);
        listMenu.ToList().ForEach(x => bar.Items.Add(x));
        bar.RecalcLayout(); //重绘布局
    
        stopwatch.Stop(); //  停止监视
        TimeSpan timespan = stopwatch.Elapsed; //  获取当前实例测量得出的总时间
    
        this.labelX1.Text = "生成菜单耗时" + timespan.TotalSeconds.ToString() + "毫秒";
        //textBoxX1.LostFocus += (s, e) => { MessageBox.Show("失去焦点"); };
    }

public class JsonTuple<T1, T2>
    {
        public T1 Item1 { get; set; }
        public T2 Item2 { get; set; }
        public KeyValuePair<Int32, Int32> KvType { get; set; }
        public Boolean Tag { get; set; }
    
        public JsonTuple(T1 item1, T2 item2, KeyValuePair<Int32, Int32> kvType, bool tag)
        {
            this.Item1 = item1;
            this.Item2 = item2;
            this.KvType = kvType;
            this.Tag = tag;
        }
        public JsonTuple(T1 item1, T2 item2, bool tag)
            : this(item1, item2, new KeyValuePair<int, int>(0, 0), tag)
        {
        }
    }

private List<JsonTuple<string, string>> GetMenuSetter()
    {
        List<JsonTuple<string, string>> listMenu = new List<JsonTuple<string, string>>
        {
            //有&会在字体下面显示下划线
            new JsonTuple<string,string>("bFile","&File",new KeyValuePair<int, int>(1,0),false),
            new JsonTuple<string,string>("bOpen","Open",new KeyValuePair<int, int>(2,1),false),
            new JsonTuple<string,string>("bClose","&Close",new KeyValuePair<int, int>(3,1),false),
            new JsonTuple<string,string>("bExit","&Exit",new KeyValuePair<int, int>(4,1),true),
            //====================================================
            new JsonTuple<string,string>("bCut","&Cut",new KeyValuePair<int, int>(5,0),false),
            new JsonTuple<string,string>("bCopy","&Copy",new KeyValuePair<int, int>(6,5),false),
            new JsonTuple<string,string>("bPaste","&Paste",new KeyValuePair<int, int>(7,5),false),
            new JsonTuple<string,string>("bClear","&Clear",new KeyValuePair<int, int>(8,5),true),
    
        };
        return listMenu;
    }

private IEnumerable<ButtonItem> GetButtonItem(int pid)
    {
        var listMenu = GetMenuSetter();
    
        var query = listMenu.Where(x => x.KvType.Value == pid).Select(x =>
        {
            var bi = new ButtonItem(x.Item1, x.Item2);
            bi.Tag = x.KvType; //标记
            bi.BeginGroup = x.Tag;
            return bi;
        });
    
        var plist = query.ToList();
    
        plist
            .ForEach(
                x => x
                    .SubItems
                    .AddRange(
                        GetButtonItem(((KeyValuePair<int, int>)x.Tag).Key).ToArray()
                    )
            );
    
        return plist;
    }

支持多级嵌套，看看效果：  
![SouthEast][]  
![SouthEast 1][]

[SouthEast]: /images/20220810/ada006a1c4ca47be873410a7c262fd86.png
[SouthEast 1]: /images/20220810/8af008878d9548a5be2a4d8941929a1e.png