如何在c# / unity中将MQTT从字符串解析为浮点型？

using UnityEngine;
using System;
using uPLibrary.Networking.M2Mqtt;
using uPLibrary.Networking.M2Mqtt.Messages;

public class MQTTSubscriber : MonoBehaviour
{
    private MqttClient client;

    void Start()
    {
        // 初始化MQTT客户端
        client = new MqttClient("mqtt.example.com");
        client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived;
        string clientId = Guid.NewGuid().ToString();
        client.Connect(clientId);
        client.Subscribe(new string[] { "topic" }, new byte[] { MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE });
    }

    private void Client_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e)
    {
        // 接收到MQTT消息的回调函数
        string message = System.Text.Encoding.UTF8.GetString(e.Message);

        // 将字符串解析为浮点型
        float floatValue;
        if (float.TryParse(message, out floatValue))
        {
            // 解析成功，可以使用浮点型数值进行后续操作
            Debug.Log("Received float value: " + floatValue);
        }
        else
        {
            // 解析失败，处理错误情况
            Debug.LogError("Failed to parse float value from MQTT message: " + message);
        }
    }
}