form1.cs

用VS2008写的配件管理系统

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

namespace PeiJian
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        data data = new data();
        private OleDbDataReader reader;
        private void button1_Click(object sender, EventArgs e)
        {
            int b = 0;
            string sqlstr = "select * from [user]";
            reader = data.GetData(sqlstr);

            while (reader.Read())
            {
                if (textBox1.Text == reader["userid"].ToString() && textBox2.Text == reader["password"].ToString())
                {
                    this.Hide();
                    b = 1;

                    Form2 f2 = new Form2();
                    f2.Show();

                    break;
                }
                
            }
            if (b == 0)
            {

                MessageBox.Show("用户名或密码错误！");

            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void button3_Click_3(object sender, EventArgs e)
        {

            Form3 f3 = new Form3();
            f3.ShowDialog();
        }

    }
}