private void Form1_Load(object sender, System.EventArgs e)
{
DB db = new DB("localhost", "root", "1234", "3306");
db.DBcon();
db.DBorTable_Create();
DB.query_execute("select * from setting;", "select");
//%timer_sensor.Interval = (int)variable.save_period * 6000;
//timer_sensor.Interval = 1000;
}