菜单手动添加快捷键

char []sepc = new char[]{'+'};
string str = "Alt+A";
string[] shortCutKeys = str.Split(sepc);
Keys keys = Keys.None, key = Keys.None;
foreach (string shortCutKey in shortCutKeys)
{
     key = (Keys)Enum.Parse(typeof(Keys), shortCutKey);
     if (keys != Keys.None)
         keys = keys | key;
      else
         keys = key;
}
menuItem.ShortcutKeys = keys;