private void button3_Click(object sender, EventArgs e)
        {
            var db = new DataAccessErrors();

            db.InsertBookStoredProc();
            textBox1.Text = db.ResultText;
        }
        private void button2_Click(object sender, EventArgs e)
        {
            var db = new DataAccessErrors();

            db.RunSelectQueryWithBetterError();
            textBox1.Text = db.ResultText;
        }