Асинхронный запрос к БД без нарушения MVC

private void button1_Click(object sender, EventArgs e)
{
    DataBaseConection dbConnection = new DataBaseConection();
    List<string> names = dbConnection.GetNames();
    foreach (string name in names)
        comboBox1.Items.Add(name);
}

class DataBaseConection
{
    SqlConnection connection;
    SqlConnectionStringBuilder conBuilder;        
 
    public DataBaseConection()
    {
        conBuilder = new SqlConnectionStringBuilder();
        conBuilder.InitialCatalog = "NamesDB";
        conBuilder.DataSource = @"(localdb)\mssqllocaldb";
        conBuilder.IntegratedSecurity = true;            
    }
 
    public List<string> GetNames()
    {
        List<string> names = new List<string>();
           
        SqlDataReader reader;
        connection = new SqlConnection(conBuilder.ConnectionString);
        SqlCommand command = new SqlCommand("SELECT name FROM Names", connection);
 
        try
        {
            connection.Open();
            reader = command.ExecuteReader();
            while (reader.Read())
            {
                names.Add(reader.GetString(0));
             }
        }
        catch (Exception ex){}
        finally
        {
            if (connection != null) connection.Close();
        }
 
        return names;
    }
}