private void RemoveAreaDevs(AreaEntity area)
        {
            if (area.LeafNodes == null)
            {
                area.LeafNodes = devService.GetListByPid(area.Id + "");
            }

            List <DevEntity> devs = new List <DevEntity>();

            //List<DevEntity> devs2 = new List<DevEntity>();
            if (area.Type == AreaTypes.机房)
            {
                var parent = area.Parent;
                if (parent == null)
                {
                    parent = areaService.GetParent(area.Id + "");
                }
                var devs2 = parent.LeafNodes;
                if (devs2 == null)
                {
                    devs2 = devService.GetListByPid(parent.Id + "");
                }
                foreach (var item in devs2)
                {
                    if (area.InitBound.Contains(item.Pos.PosX, item.Pos.PosZ))
                    {
                        devs.Add(item);
                    }
                }
            }
            else if (area.Type == AreaTypes.楼层)
            {
                var devs2 = area.LeafNodes;
                if (devs2 == null)
                {
                    devs2 = devService.GetListByPid(area.Id + "");
                }
                foreach (var item in devs2)
                {
                    if (area.InitBound.Contains(item.Pos.PosX, item.Pos.PosZ))
                    {
                        devs.Add(item);
                    }
                }
            }

            //var devs=devService.GetListByBound(area.InitBound);
            AreaCanvas1.SelectDevs(devs);
            if (MessageBox.Show(string.Format("确认删除区域'{0}'内{1}个设备?", area.Name, devs.Count), "警告", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
            {
                foreach (var dev in devs)
                {
                    var r = devService.Delete(dev.Id + "");
                    if (r == null)
                    {
                        MessageBox.Show("删除失败:" + dev.Name);
                    }
                    AreaCanvas1.RemoveDev(dev.Id);
                }
            }
            else
            {
                AreaCanvas1.ClearSelect();
            }
        }