private void materialRaisedButton3_Click(object sender, EventArgs e)
        {
            inicio_sesion ini = new inicio_sesion();

            ini.abrir();
            this.Close();
        }
        private void main_provedor_Load(object sender, EventArgs e)
        {
            a = 0;
            b = 4;
            inicio_sesion   inn    = new inicio_sesion();
            string          myC    = "datasource=remotemysql.com ;port=3306;username=MtcqKvJRNU;password=8cjzPjeLPp";
            MySqlConnection myConn = new MySqlConnection(myC);
            MySqlCommand    sc     = new MySqlCommand("select * from MtcqKvJRNU.equipo where nom_lugar = '" + inicio_sesion.id + "';", myConn);
            String          query  = string.Format("select * from MtcqKvJRNU.equipo LIMIT {0},{1};", a, b);
            MySqlCommand    sc2    = new MySqlCommand(query, myConn);
            MySqlDataReader myR;

            myConn.Open();
            myR = sc.ExecuteReader(CommandBehavior.CloseConnection);
            dataGridView1.Rows.Clear();
            while (myR.Read() == true)
            {
                dataGridView1.Rows.Add(myR[1], myR[2], myR[4], myR[3]);
            }
            myConn.Close();
            myConn.Open();
            myR = sc2.ExecuteReader(CommandBehavior.CloseConnection);
            dataGridView2.Rows.Clear();
            while (myR.Read() == true)
            {
                dataGridView2.Rows.Add(myR[1], myR[2], myR[6], myR[8]);
            }
            actualizar_datos();

            myConn.Close();

            gMapControl1.DragButton  = MouseButtons.Left;
            gMapControl1.CanDragMap  = true;
            gMapControl1.MapProvider = GMapProviders.GoogleMap;
            gMapControl1.Position    = new PointLatLng(LongIni, LatIni);
            gMapControl1.MinZoom     = 0;
            gMapControl1.MaxZoom     = 24;
            gMapControl1.Zoom        = 16;
            gMapControl1.AutoScroll  = true;
        }