string sqlQuery2 = @"UPDATE dbo.testenumserie SET ESTADO = '" + comboBox1.Text + "' WHERE NumSerie = '" + textBox2.Text + "'";
string sqlQuery2 = @"INSERT into dbo.testenumserie(Estado, NumSerie) SELECT '" + comboBox1.Text + "', '" + textBox2.Text + '" from dbo.testenumserie WHERE NumSerie = '" + textBox2.Text + "'";