我应该为“类型”使用哪个关键字

debugcn 发表于 Dev

卢德普

在我的 uwp 项目中，我有一个被调用的列表，Rooms这是该列表中的内容：

public string RoomID { get; set; }
public string RoomName { get; set; }
public Visibility Projector { get; set; }
public int Seats { get; set; }
public string FrontImage { get; set; }
public string Note { get; set; }

我正在尝试插入一个值Projectorin

Rooms.Add(new Room
{
    RoomID = id,
    RoomName = name,
    FrontImage = Img1,
    Seats = seats,
    Note = "Lorem ipsum dolor sit amet, co"
});

有了这行代码。

Rooms.Insert(1, new Room{ Projector = Visibility.Collapsed });

但是，当我使用关键字new创建一个新房间时，是否还有其他关键字可以用于将“投影仪”值插入到我现有的房间中？

提前致谢！

编辑：

foreach (var room in data)
{
    string id = room.id;
    string name = room.name;
    int seats = room.seats;
    List<Roomattribute> roomattrib = room.roomAttributes;
    foreach (var attri in roomattrib)
    {
        int attriId = attri.id;
        string attriName = attri.name;
        int attriIcon = attri.icon;
        if (attriId == 1)
        {
            Rooms.Insert(0, new Room{ Projector = Visibility.Collapsed });
        }  
    }
    Rooms.Add(new Room
    {
        RoomID = id,
        RoomName = name,
        FrontImage = Img1,
        Seats = seats,
        Note = "Lorem ipsum dolor sit amet, co"
    });
}

软件绝地

这是你想要做的吗？

foreach (var room in data)
{
    var newRoom = new Room()
    {
        RoomID = room.id,
        RoomName = room.name,
        FrontImage = Img1,
        Seats = room.seats,
        Note = "Lorem ipsum dolor sit amet, co"
    };

    //if any of the room's attribute's ID is 1
    if (room.roomAttributes.Any(a => a.id == 1))
        newRoom.Projector = Visibility.Collapsed;

    Rooms.Add(newRoom);
}

或者甚至更简单，使用单个转换代码行（请注意，如果是枚举，则可能需要将下面的“null”调整为默认值）。这完全避免了 foreach，并且读起来非常简洁。这就是我编写这段代码的方式。

Rooms.AddRange(data.Select(a => new Room() {
        RoomID = a.id,
        RoomName = a.name,
        FrontImage = Img1,
        Seats = a.seats,
        Note = "Lorem ipsum dolor sit amet, co"
        Projector = a.roomAttributes.Any(a => a.id == 1) ? Visibility.Collapsed : null
    });

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