Using SqlCommand and AddWithValue Parameters To Execute SQL Insert

public bool PollCastVote(int PollAnswerID)
    {

        bool returnValue = false;

        Guid userID = Guid.NewGuid();
        DateTime dateTimeStamp = DateTime.Now;

        // connection string
        string connectionString = ConfigurationManager.ConnectionStrings["PollConnectionString"].ConnectionString;

        // Sql connection object initialized with connection string used to connect
        using (SqlConnection mySqlConnection = new SqlConnection(connectionString))
        {
            try
            {
                // open the Sql connection
                mySqlConnection.Open();

                // Sql Command object initialized with SQL INSERT
                SqlCommand mySqlCommand = new SqlCommand("INSERT INTO PollUserResponses (UserID, PollAnswerID, DateTimeStamp) VALUES (@UserID, @PollAnswerID, @DateTimeStamp)", mySqlConnection);
                mySqlCommand.Parameters.AddWithValue("@UserID", userID);
                mySqlCommand.Parameters.AddWithValue("@PollAnswerID", PollAnswerID);
                mySqlCommand.Parameters.AddWithValue("@DateTimeStamp", dateTimeStamp);

                // Execute
                mySqlCommand.ExecuteNonQuery();

                returnValue = true;

            }
            catch (Exception ex)
            {

            }
            finally
            {
                // close the Sql Connection
                mySqlConnection.Close();
            }

            return returnValue;

        }
    }