Split string into three pieces?

I am working on sending multiplayer packets, and I am sending each player a message containing : “x[PLAYER POSITION X]y[PLAYER POSITION Y]z[PLAYER POSITION Z]”.
(Replace the brackets with the actual positions)

I want to make a vector from this information, but I am not skilled at working with string functions.

How would I put this info into a Vector3?

(C# ONLY PLEASE)

Thank you,
Bryce

I have this code maybe help you:

void Start()
    {
        //packed
        float[] pos = {transform.position.x, transform.position.y, transform.position.z};
        string posINstring = Joinsfloats(pos);
        print(posINstring);

        //read packed
        float[] newpos = Split_floats(posINstring);
        transform.position = new Vector3(newpos[0], newpos[1], newpos[2]);
        print(transform.position);
    }

    public string Joinsfloats(float[] ar)
    {
        return System.String.Join("_", new List<float>(ar).ConvertAll(i => i.ToString()).ToArray());
    }

    public float[] Split_floats(string tx)
    {
        List<float> lista = new List<float>();
        int lasti = 0;
        while (lasti < tx.Length)
        {
            int index = tx.IndexOf('_', lasti);
            if (index != -1)
            {
                float num = float.Parse(tx.Substring(lasti, index - lasti));
                lista.Add(num);
                lasti = index + 1;
            }
            else
            {
                float num = float.Parse(tx.Substring(lasti, tx.Length - lasti));
                lista.Add(num);
                lasti = tx.Length;
            }
        }
        return lista.ToArray();
    }