borrowandback.cs

一个简单的管理系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace 图书管理系统
{
    public partial class BorrowandBack : Form
    {
        public BorrowandBack()
        {
            InitializeComponent();
        }
        Bokbase bb = new Bokbase();
        private void BorrowandBack_Load(object sender, EventArgs e)
        {
            //DataSet bbds= bb.getds("select * from BookOut", "BookOut");
            //dgvbb.DataSource=bbds.Tables[0];
        }

        private void btnsearch_Click(object sender, EventArgs e)
        {
            //bb.getcom("select * from BookOut where ISBN='"+Convert.ToInt32( txtbokisbn.Text)+"' or StuID ='"+txtstunum.Text+"'");
            DataSet bbds = bb.getds("select * from BookOut where ISBN='" +txtbokisbn.Text+ "' or StuID ='" + txtstunum.Text + "'","BookOut");
            dgvbb.DataSource=bbds.Tables;
            if (dgvbb.RowCount == 0)
                MessageBox.Show("并无相关信息!请重新确认!");
        }

        private void btndel_Click(object sender, EventArgs e)
        {
            //bb.getcom("delete from BookOut where ISBN='"+txtbokisbn.Text+"'");
            //DataSet afterdel = bb.getds("select * from BookOut", "BookOut");
            //dgvbb.DataSource = afterdel.Tables[0];
            //dgvbb.Update();
            try
            {
                dgvbb.Rows.RemoveAt(0);
                MessageBox.Show("记录清除成功! ");
            }
            catch (Exception de) { MessageBox.Show(de.Message); }
        }

        private void dgvbb_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            txtbokisbn.Text=Convert.ToString(dgvbb[0,dgvbb.CurrentCell.RowIndex].Value);
            txtstunum.Text = Convert.ToString(dgvbb[4,dgvbb.CurrentCell.RowIndex].Value);
        }
    }
}