登陆界面.cs

用C#实现超市的管理

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

namespace Myproject
{
    public partial class 登陆界面 : Form
    {
        //private SqlConnection con;
        //private SqlDataAdapter objdata;
        //private DataSet objdataset;

        public 登陆界面()
        {
            InitializeComponent();
        }

        public static void Main()
        {
            Application.Run(new 登陆界面());
        }

       

        private void btnNo2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

      
        private void label1_Click(object sender, EventArgs e)
        {
            高层管理界面 mer = new 高层管理界面();
            mer.Show();

        }

        private void toolStripButton1_Click(object sender, EventArgs e)
        {

          wang selectmer = new wang();
          bool logeng =selectmer.SelectMouder("select count(*) from Denglu where username='"+this.txtNo1.Text.Trim()+"' and password='"+this.textBox1.Text.Trim()+"'");

          if (logeng)
          {
              高层管理界面 mer = new 高层管理界面();
              mer.Show();
              this.Hide();
          }
          else
          {
              MessageBox.Show("你的用户名和密码不正确请查证后在输入","系统消息");
          }
            
        }

        private void toolStripButton2_Click(object sender, EventArgs e)
        {
            Application.Exit();

        }

        private void toolStripLabel2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

       

      
    }
}