Fórum Codigo promocional #449818

private static string GeraSenhaAlfanumerico(byte tamanho)
        {
            var sb = new StringBuilder();
            var r = new Random();
            for (byte i = 0; i < tamanho; i++)
            {
                var c = (char)r.Next(65, 90);
                var n = r.Next(0, 9);
                var b = r.Next(-1,1);
                if( Convert.ToBoolean(b))
                    sb.Append(c);
                else
                    sb.Append(n);
            }
            return sb.ToString();
        }
    

var n = r.Next(0,9);

private static string GerarCodigoPromocional(int tamanho)
        {
            var sb = new StringBuilder();
            var r = new Random();
            for (int i = 0; i < tamanho; i++)
            {
                var c = (char)r.Next(65, 90);
                var n = r.Next(0, 10);
                var b = r.Next(-1, 1);
                if (Convert.ToBoolean(b))
                    sb.Append(c);
                else
                    sb.Append(n);
            }
            return sb.ToString();
        }