信號返回模型對象

Question

故事在於，我有ROOM Model類。我想用Signalr返回json。可能嗎 ？如果是這樣，我該如何使用它？

PS：而且我知道我不會把房間對象留給客戶。

public List<RoomModel> GetRooms() 
     { 
      GameUser user = _gameService.GetUserByClientId(Context.ConnectionId); 

     var room = _gameService.GetAllowedRooms(user).Select(r => new RoomModel 
     { 
      Name = r.Name, 
      Count = 0, 
      Private = r.Private, 
      Closed = r.Closed, 
     }).ToList(); 

     return room; 
    } 

Answer 1

當您將對象發送給客戶端時，SignalR會自動序列化您的對象。 （我假設你的客戶端是javascript。）

正如你所看到的this example他們發送ShapeModel複雜的對象在JavaScript中處理。序列化全部自動化。

如果您的示例中的方法是集線器方法，我建議您以不同的方式結束它。您可能會調用客戶端事件，而不是返回值。因此：

public class RoomHub : Hub { 
    public void GetRooms() { 
     List<Room> rooms = new List<Room>(); 
     rooms.Add(new Room{ Name = "Room1", Count = 12, Closed = true, Private = false}); 
     rooms.Add(new Room{ Name = "Room2", Count = 20, Closed = false, Private = true}); 

     // sending a list of room objects 
     Clients.Client(Context.ConnectionId).roomInfo(rooms); 
    } 
} 

// Room class (your complex object) 
public class Room 
{ 
    public string Name { get; set; } 
    public int Count { get; set; } 
    public bool Private { get; set; } 
    public bool Closed { get; set; } 
} 

查看有關從集線器方法呼叫here的詳細信息。

然後JavaScript客戶端：

var roomHub = $.connection.roomHub; 

roomHub.client.roomInfo = function (rooms) { 
    // the parameter rooms is a serialized List<Room> 
    // which here will be an array of room objects. 
    console.log(rooms); 
    // You can read the room properties as well 
    for (i=0; i<rooms.length; ++i) { 
     console.log(rooms[i].Name); 
     console.log(rooms[i].Count); 
    } 
} 

$.connection.hub.start().done(function() { 
    console.log("You are connected"); 
    roomHub.server.getRooms(); 
}); 

在我的瀏覽器控制檯：