[EE] Better and Stupider way to detect commands

// Case: say
string player = users[m.GetInt(0)].username;
string msg = m.GetString(1);
if(Regex.IsMatch(msg.SubString(0, 1), @"\.|\!"))
{
    var cmd = msg.Remove(0, 1).ToLower().ToString();
    switch(cmd[0])
    {
        case "test":
            {
                say("It's working!");
            }
            break;
    }
}