销售客户查找.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 销售客户查找 : Form
    {

        public 销售客户查找()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            添加客户 liheng = new 添加客户();
            liheng.Show();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            this.Close();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            wang qubuchazhao = new wang();
            DataSet ds = qubuchazhao.SelectMand("select *from Tianjiakehu ");
            this.dataGridView1.DataSource = ds.Tables[0].DefaultView;

        }

        private void button3_Click(object sender, EventArgs e)
        {
          wang chazhao = new wang();
          DataSet ds=chazhao.SelectMand("select *from Tianjiakehu where 编号='"+this.txt9.Text+"'");
          this.dataGridView1.DataSource = ds.Tables[0].DefaultView;
        }

       
    }
}