使用JSON.NET将C＃对象转换为JSON时，多余的'\'是逗号

我正在使用JSON.NET库将C＃列表转换为JSON。当我快速查看对象后将其转换后，我可以在每个属性中看到额外的“ \”。我通过控制器（asp.net MVC控制器）将此数据发送到JavaScript客户端之一。发送数据时，数据带有额外的“ \”。如何删除这些多余的“ \”？

我的控制器：

public class MyController : myBase
    {
        public string Get(string id = null, string userName = null)
        {
            List<Data> dataList = new List<Data>();

            Data d = new Data();
            d.Name = "FireFox";
            d.Folder = @"Testing\Mac OSX";
            dataList.Add(d);

            d = new Data();
            d.Name = "Safari";
            d.Folder = @"Testing\Mac OSX";
            dataList.Add(d);

            d = new Data();
            d.Name = "Chrome";
            d.Folder = @"Testing\Mac OSX";
            dataList.Add(d);

            d = new Data();
            d.Name = "FireFox";
            d.Folder = @"Testing\Windows";
            dataList.Add(d);

            d = new Data();
            d.Name = "Safari";
            d.Folder = @"Testing\Windows";
            dataList.Add(d);

            d = new Data();
            d.Name = "Chrome";
            d.Folder = @"Testing\Windows";
            dataList.Add(d);

            d = new Data();
            d.Name = "Internet Exploder";
            d.Folder = @"Testing\Windows";
            dataList.Add(d);


            d = new Data();
            d.Name = "Chrome";
            d.Folder = @"Testing\Linux";
            dataList.Add(d);

            d = new Data();
            d.Name = "Firefox";
            d.Folder = @"Testing\Linux";
            dataList.Add(d);

            d = new Data();
            d.Name = "Testing First Child";
            d.Folder = @"Testing";
            dataList.Add(d);

            d = new Data();
            d.Name = "First Child";
            d.Folder = null;
            dataList.Add(d);


            Node root = new Node();
            foreach (Data da in dataList)
            {
                Node parent = root;
                if (!string.IsNullOrEmpty(da.Folder))
                {
                    Node child = null;
                    foreach (string part in da.Folder.Split(new char[] {'\\'}, StringSplitOptions.RemoveEmptyEntries))
                    {
                        string name = part.Trim();
                        child = parent.children.Find(n => n.Name == name);
                        if (child == null)
                        {
                            child = new Node {Name = name};
                            parent.children.Add(child);
                        }
                        parent = child;
                    }
                }
                //Always adds the leaf node.
                parent.children.Add(new Node {Name = da.Name});
            }

            string output = JsonConvert.SerializeObject(root);
            return output;

        }

    }

    public class Data
    {
        public string Name { get; set; }
        public string Folder { get; set; }
    }

    class Node
    {
        public Node()
        {
            children = new List<Node>();
        }

        public List<Node> children { get; set; }
        public string Name { get; set; }
        public bool leaf { get; set; }
        public bool expanded { get; set; }
    }

firefox中的数据---其他控制器正在返回不带'\'的数据

额外的 '\'

如何删除这些“ \”？