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;