how to use it

[encrylife]

I has update the WebApiConfig.cs ,add the config.Formatters.Add(new ProtoBufFormatter()) but the client received content is null. In the controller it like this
` public Order Get(String id)
{
var itemList = new List();
var item = new Order();
item.MemberName = "wewewe";
item.OrderId = 987456321;

        return item;
    }`

How to use it.