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   源码介绍

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分类管理各项商品 ，入门级示例源码，适合新手

附加上数据库后，修改 DBHelper.cs中的 数据库 Pwd 密码 即可,登陆账号 jbit 密码 123

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace SuperMarket
{
    public partial class frmProductlist : Form
    {
        public frmProductlist()
        {
            InitializeComponent();
        }
        DataSet ds = new DataSet();//创建数据集

        #region 窗体加载事件
        //窗体加载事件
        private void frmProductlist_Load(object sender, EventArgs e)
        {
            Bind();
        }
        #endregion

        #region 初始化
        public void Bind()
        {
            this.dgvspxs.AutoGenerateColumns = false;
            string sql = "select c.*,s.SortName from Commodity c,CommoditySort s where c.SortID = s.SortID";
            SqlDataAdapter adapter = new SqlDataAdapter(sql, DBHelper.ConnString);
            if (ds.Tables["Commodity"] != null)
            {
                ds.Tables["Commodity"].Clear();
            }
            adapter.Fill(ds, "Commodity");
            this.dgvspxs.DataSource = ds.Tables["Commodity"];
        }
        #endregion

        #region 单击退出
        private void tstc_Click(object sender, EventArgs e)
        {
            this.Close();


        }
        #endregion
        
        #region 选中后事件
        //选中后事件
        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            Cood();
        }
        #endregion

        #region 筛选
        //筛选
        public void Cood()
        {
            DataView dv = new DataView(ds.Tables["Commodity"]);//获取深度
            TreeNode tv = this.tvree.SelectedNode;
            if (tv.Level != 0)
            {
                dv.RowFilter = "IsDiscount = '"   tv.Tag   "'";
            }
            this.dgvspxs.DataSource = dv;
        }
        #endregion

        #region 单击增加
        private void tszj_Click(object sender, EventArgs e)
        {
            frmCompile ws = new frmCompile();
            ws.ShowDialog();
            this.Bind();
        }
        #endregion

        #region 单击删除
        private void tssc_Click(object sender, EventArgs e)
        {
            int num = Convert.ToInt32(this.dgvspxs.CurrentRow.Cells[0].Value);
            DialogResult result = MessageBox.Show("确定要删除吗", "操作提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
            if (result == DialogResult.OK)
            {
                SqlConnection conn = new SqlConnection(DBHelper.ConnString);
                conn.Open();
                string sql = "delete Commodity where CommodityID="   num;
                SqlCommand comm = new SqlCommand(sql, conn);
                int sum = comm.ExecuteNonQuery();
                if (sum >= 1)
                {
                    MessageBox.Show("删除成功");
                    Bind();
                }
                else
                {
                    MessageBox.Show("删除失败");
                }
                conn.Close();
            }

        }
        #endregion

        #region 单击修改
        private void tsxg_Click(object sender, EventArgs e)
        {
            frmCompile qs = new frmCompile();
            qs.num = Convert.ToInt32(this.dgvspxs.SelectedCells[0].Value);
            qs.ShowDialog();
            this.Bind();



        }
        #endregion
        
    }
}