相关疑难解决方法(0)

我需要传递User.Identity.Name给Windows窗体客户端.

方法

public override Task OnConnected() {

    string userName = Context.User.Identity.Name;
    string connectionId = Context.ConnectionId;

    var user = Users.GetOrAdd(userName, _ => new User {
        Name = userName,
        ConnectionIds = new HashSet<string>()
    });

    lock (user.ConnectionIds) {
        user.ConnectionIds.Add(connectionId);
        if (user.ConnectionIds.Count == 1) {
            Clients.Others.userConnected(userName);
        }
    }
    return base.OnConnected();
}

但是Context.User.Identity.Name是空的吗？为什么？怎么解决？