public static void Main(string[] args)
{
var jsonString = @"{""date"" : ""19:21:17 28/3/2020"", ""temp"" : 5}";
Message message = Message.ToMessage(jsonString); // converte json pra Message
Console.WriteLine(message);
Console.WriteLine((ValueType)message.GetDate() ?? -5); // se a data nao for null entao imprime-a
}
/**
* Salva uma mensagem recebida na base de dados.
*/
public static void AddMessage(Message message)
{
MySqlConnection sqlConnection = new MySqlConnection(_CONNECTION);
sqlConnection.Open();
using var cmd = new MySqlCommand(_INSERT_MEDIDAS, sqlConnection);
cmd.Parameters.AddWithValue(_P_DATA, message.GetDate());
cmd.Parameters.AddWithValue(_P_TEMP, message.temp);
cmd.Parameters.AddWithValue(_P_UMIDADE, message.humidity);
cmd.Parameters.AddWithValue(_P_UID, message.uid);
cmd.Prepare();
cmd.ExecuteNonQuery();
}