public void Insert(string name, string address)
{
    string query = "INSERT INTO Table VALUES (?name, ?address)";
    try
    {
        connection.Open();
        MySqlCommand cmd = new MySqlCommand
        MySqlParameter param = new MySqlParameter("?name", name);
        cmd.Parameter.Add(param);
        param = new MySqlParameter("?address", address);
        cmd.Parameter.Add(param);
        cmd.ExecuteNonQuery();
        connection.Close();
    }
    catch (Exception e)
    {
        Console.WriteLine(e.Message);
    }