C# Bar.Merge() 无效

Question

我执行这句话：this.bar1.Merge(barManager4UserControl.MainMenu);没有像预期那样合并了菜单。请问为什么？

Answer 1

我代码中合并菜单的整体方法是：if (barManager4UserControl == null)
                return;            Bar mainMenu = null;
            if (barManager4UserControl.MainMenu != null)
            {
                mainMenu = barManager4UserControl.MainMenu;
                this.BarMain.Merge(barManager4UserControl.MainMenu);
                mainMenu.Visible = false;
            }            int col = 1;
            foreach (Bar item in barManager4UserControl.Bars)
            {
                if (item == mainMenu || item == barManager4UserControl.StatusBar)//状态栏不合并
                    continue;                Bar bar = new Bar(this.barManager1);
                bar.DockRow = 1;
                bar.DockCol = col;
                col++;
                bar.DockStyle = BarDockStyle.Top;
                bar.Visible = true;
                bar.Merge(item);
                bar.BarName = item.BarName;                item.Visible = false;
            }