private void button4_Click(object sender, EventArgs e) { ClsDB.ClsDBControl cdb = new Test13.ClsDB.ClsDBControl(); DataSet dsNew = cdb.dsResult(LastNum - 1); this.textBox1.Text = dsNew.Tables[0].Rows[0][0].ToString(); this.textBox2.Text = dsNew.Tables[0].Rows[0][1].ToString(); this.textBox3.Text = dsNew.Tables[0].Rows[0][2].ToString(); i = LastNum - 1; }
private void button3_Click(object sender, EventArgs e) { i += 1; if (i <= (LastNum - 1)) { ClsDB.ClsDBControl cdb = new Test13.ClsDB.ClsDBControl(); DataSet dsNew = cdb.dsResult(i); this.textBox1.Text = dsNew.Tables[0].Rows[0][0].ToString(); this.textBox2.Text = dsNew.Tables[0].Rows[0][1].ToString(); this.textBox3.Text = dsNew.Tables[0].Rows[0][2].ToString(); } else { i -= 1; MessageBox.Show("这已是最后一条信息"); } }