Byte to string for hash function?

How can I convert passwordHash to string?

    protected RNGCryptoServiceProvider random = new RNGCryptoServiceProvider();
 
     public byte[] GenerateSalt()
     {
         byte[] salt = new byte[10];
         random.GetNonZeroBytes(salt);
         return salt;
     } 
 
     public static byte[] Hash(string value, byte[] salt)
     {
         return Hash(Encoding.UTF8.GetBytes(value), salt);
     }
 
     public static byte[] Hash(byte[] value, byte[] salt)
     {
         byte[] saltedValue = value.Concat(salt).ToArray();
 
         return new SHA256Managed().ComputeHash(saltedValue);
     }
 
     public void AddStudent(Student student)
     {
         student.StudentID = (++eCount).ToString();
         byte[] passwordHash = Hash(student.Password, GenerateSalt());
         student.Password = passwordHash; //this line?
         student.TimeAdded = DateTime.Now;
         students.Add(student);
     }
 

If I try:

    public void AddStudent(Student student)
     {
         student.StudentID = (++eCount).ToString();
         byte[] passwordHash = Hash(student.Password, GenerateSalt());
         student.Password = Convert.ToString(passwordHash); //this line?
         student.TimeAdded = DateTime.Now;
         students.Add(student);
     }
 

When I GET my Student collection the password field will say System.Byte[] where as I want to get the hashed/salted password back?

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