ContextMenuStrip在点击事件里，获取绑定的控件源

          ToolStripMenuItem delete = sender as ToolStripMenuItem;
            ContextMenuStrip menu = delete.Owner as ContextMenuStrip;

           SourceControl 转换成绑定的控件
            CommandTeam team = menu.SourceControl as CommandTeam;
            FireSquadron fs = team.Tag as FireSquadron;